./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0 --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 9674251da7d9ff9045cc98880d6752b693163f5c0467dc21f0f16b64a076bd08 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:11:02,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:11:02,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:11:02,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:11:02,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:11:02,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:11:02,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:11:02,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:11:02,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:11:02,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:11:02,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:11:02,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:11:02,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:11:02,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:11:02,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:11:02,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:11:02,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:11:02,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:11:02,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:11:02,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:11:02,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:11:02,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:11:02,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:11:02,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:11:02,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:11:02,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:11:02,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:11:02,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:11:02,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:11:02,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:11:02,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:11:02,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:11:02,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:11:02,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:11:02,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:11:02,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:11:02,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:11:02,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:11:02,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:11:02,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:11:02,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:11:02,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:11:02,979 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:11:02,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:11:02,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:11:02,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:11:02,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:11:02,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:11:02,983 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:11:02,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:11:02,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:11:02,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:11:02,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:11:02,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:11:02,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:11:02,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:11:02,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:11:02,986 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:11:02,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:11:02,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:11:02,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:11:02,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:11:02,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:11:02,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:11:02,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:11:02,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:11:02,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:11:02,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:11:02,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:11:02,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:11:02,989 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:11:02,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:11:02,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:11:02,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:11:02,992 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_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9674251da7d9ff9045cc98880d6752b693163f5c0467dc21f0f16b64a076bd08 [2021-11-22 16:11:03,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:11:03,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:11:03,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:11:03,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:11:03,337 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:11:03,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-22 16:11:03,418 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/data/8d67a4c3c/689d41481b7142509692a3ce7494c0a4/FLAGce633f538 [2021-11-22 16:11:04,051 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:11:04,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-22 16:11:04,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/data/8d67a4c3c/689d41481b7142509692a3ce7494c0a4/FLAGce633f538 [2021-11-22 16:11:04,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/data/8d67a4c3c/689d41481b7142509692a3ce7494c0a4 [2021-11-22 16:11:04,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:11:04,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:11:04,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:11:04,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:11:04,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:11:04,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:11:04" (1/1) ... [2021-11-22 16:11:04,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce230fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:04, skipping insertion in model container [2021-11-22 16:11:04,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:11:04" (1/1) ... [2021-11-22 16:11:04,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:11:04,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:11:04,788 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14166,14179] [2021-11-22 16:11:04,819 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15226,15239] [2021-11-22 16:11:04,928 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26532,26545] [2021-11-22 16:11:04,937 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27179,27192] [2021-11-22 16:11:04,951 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28412,28425] [2021-11-22 16:11:04,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:11:05,003 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:11:05,178 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14166,14179] [2021-11-22 16:11:05,204 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15226,15239] [2021-11-22 16:11:05,358 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26532,26545] [2021-11-22 16:11:05,365 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27179,27192] [2021-11-22 16:11:05,375 WARN L230 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_e5b2a8c6-a39e-494b-9579-3539717a9995/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28412,28425] [2021-11-22 16:11:05,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:11:05,415 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:11:05,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05 WrapperNode [2021-11-22 16:11:05,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:11:05,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:11:05,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:11:05,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:11:05,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,516 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1558 [2021-11-22 16:11:05,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:11:05,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:11:05,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:11:05,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:11:05,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:11:05,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:11:05,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:11:05,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:11:05,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (1/1) ... [2021-11-22 16:11:05,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:11:05,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:11:05,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:11:05,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5b2a8c6-a39e-494b-9579-3539717a9995/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:11:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:11:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:11:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:11:05,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:11:05,905 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:11:05,906 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:11:07,187 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:11:07,200 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:11:07,201 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 16:11:07,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:11:07 BoogieIcfgContainer [2021-11-22 16:11:07,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:11:07,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:11:07,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:11:07,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:11:07,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:11:04" (1/3) ... [2021-11-22 16:11:07,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f19b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:11:07, skipping insertion in model container [2021-11-22 16:11:07,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:11:05" (2/3) ... [2021-11-22 16:11:07,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f19b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:11:07, skipping insertion in model container [2021-11-22 16:11:07,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:11:07" (3/3) ... [2021-11-22 16:11:07,212 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-22 16:11:07,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:11:07,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-22 16:11:07,295 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:11:07,320 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 [2021-11-22 16:11:07,320 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 16:11:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 371 states have (on average 1.8274932614555257) internal successors, (678), 376 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-22 16:11:07,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:07,369 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:07,369 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:07,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1203570768, now seen corresponding path program 1 times [2021-11-22 16:11:07,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:07,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822377171] [2021-11-22 16:11:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:07,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:08,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:08,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822377171] [2021-11-22 16:11:08,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822377171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:08,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:08,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:11:08,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257278796] [2021-11-22 16:11:08,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:08,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:11:08,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:11:08,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:11:08,234 INFO L87 Difference]: Start difference. First operand has 377 states, 371 states have (on average 1.8274932614555257) internal successors, (678), 376 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:08,544 INFO L93 Difference]: Finished difference Result 1100 states and 1983 transitions. [2021-11-22 16:11:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:11:08,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-11-22 16:11:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:08,585 INFO L225 Difference]: With dead ends: 1100 [2021-11-22 16:11:08,585 INFO L226 Difference]: Without dead ends: 726 [2021-11-22 16:11:08,596 INFO L932 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 [2021-11-22 16:11:08,602 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 1376 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:08,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1376 Valid, 1801 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:11:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-11-22 16:11:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 701. [2021-11-22 16:11:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 696 states have (on average 1.4425287356321839) internal successors, (1004), 700 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1004 transitions. [2021-11-22 16:11:08,741 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1004 transitions. Word has length 139 [2021-11-22 16:11:08,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:08,742 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 1004 transitions. [2021-11-22 16:11:08,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1004 transitions. [2021-11-22 16:11:08,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-22 16:11:08,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:08,760 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:08,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:11:08,762 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:08,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1141139268, now seen corresponding path program 1 times [2021-11-22 16:11:08,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:08,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268879383] [2021-11-22 16:11:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:08,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:08,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:08,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268879383] [2021-11-22 16:11:08,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268879383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:08,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:08,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:11:08,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677214827] [2021-11-22 16:11:08,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:08,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:11:08,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:08,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:11:08,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:11:08,896 INFO L87 Difference]: Start difference. First operand 701 states and 1004 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:08,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:08,999 INFO L93 Difference]: Finished difference Result 2065 states and 2950 transitions. [2021-11-22 16:11:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:11:09,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-22 16:11:09,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:09,009 INFO L225 Difference]: With dead ends: 2065 [2021-11-22 16:11:09,009 INFO L226 Difference]: Without dead ends: 1392 [2021-11-22 16:11:09,011 INFO L932 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 [2021-11-22 16:11:09,013 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 526 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:09,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 1588 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:11:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-11-22 16:11:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 703. [2021-11-22 16:11:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 698 states have (on average 1.4412607449856734) internal successors, (1006), 702 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1006 transitions. [2021-11-22 16:11:09,071 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1006 transitions. Word has length 140 [2021-11-22 16:11:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:09,071 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 1006 transitions. [2021-11-22 16:11:09,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1006 transitions. [2021-11-22 16:11:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-22 16:11:09,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:09,076 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:09,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:11:09,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1084924930, now seen corresponding path program 1 times [2021-11-22 16:11:09,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:09,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491831988] [2021-11-22 16:11:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:09,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:09,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:09,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491831988] [2021-11-22 16:11:09,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491831988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:09,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:09,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:11:09,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424201853] [2021-11-22 16:11:09,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:09,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:11:09,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:09,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:11:09,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:11:09,204 INFO L87 Difference]: Start difference. First operand 703 states and 1006 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:09,391 INFO L93 Difference]: Finished difference Result 1889 states and 2711 transitions. [2021-11-22 16:11:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:11:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-11-22 16:11:09,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:09,402 INFO L225 Difference]: With dead ends: 1889 [2021-11-22 16:11:09,403 INFO L226 Difference]: Without dead ends: 1364 [2021-11-22 16:11:09,406 INFO L932 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 [2021-11-22 16:11:09,410 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 463 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:09,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1478 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:11:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-11-22 16:11:09,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1339. [2021-11-22 16:11:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1334 states have (on average 1.4295352323838082) internal successors, (1907), 1338 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1907 transitions. [2021-11-22 16:11:09,498 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1907 transitions. Word has length 141 [2021-11-22 16:11:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:09,499 INFO L470 AbstractCegarLoop]: Abstraction has 1339 states and 1907 transitions. [2021-11-22 16:11:09,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1907 transitions. [2021-11-22 16:11:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-22 16:11:09,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:09,503 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:09,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:11:09,504 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:09,507 INFO L85 PathProgramCache]: Analyzing trace with hash -980453119, now seen corresponding path program 1 times [2021-11-22 16:11:09,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:09,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285109032] [2021-11-22 16:11:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:09,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:09,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285109032] [2021-11-22 16:11:09,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285109032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:09,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:09,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:11:09,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139573628] [2021-11-22 16:11:09,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:09,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:11:09,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:09,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:11:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:11:09,771 INFO L87 Difference]: Start difference. First operand 1339 states and 1907 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:10,076 INFO L93 Difference]: Finished difference Result 3750 states and 5334 transitions. [2021-11-22 16:11:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:11:10,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-11-22 16:11:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:10,095 INFO L225 Difference]: With dead ends: 3750 [2021-11-22 16:11:10,095 INFO L226 Difference]: Without dead ends: 2425 [2021-11-22 16:11:10,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:11:10,107 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 1573 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:10,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 1399 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:11:10,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-22 16:11:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2403. [2021-11-22 16:11:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2398 states have (on average 1.4132610508757297) internal successors, (3389), 2402 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3389 transitions. [2021-11-22 16:11:10,319 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3389 transitions. Word has length 141 [2021-11-22 16:11:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:10,321 INFO L470 AbstractCegarLoop]: Abstraction has 2403 states and 3389 transitions. [2021-11-22 16:11:10,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3389 transitions. [2021-11-22 16:11:10,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-22 16:11:10,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:10,328 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:10,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:11:10,329 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:10,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1926899985, now seen corresponding path program 1 times [2021-11-22 16:11:10,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:10,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73135012] [2021-11-22 16:11:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:10,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:10,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:10,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73135012] [2021-11-22 16:11:10,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73135012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:10,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:10,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:11:10,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884458955] [2021-11-22 16:11:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:10,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:11:10,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:10,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:11:10,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:11:10,532 INFO L87 Difference]: Start difference. First operand 2403 states and 3389 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:10,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:10,916 INFO L93 Difference]: Finished difference Result 7000 states and 9834 transitions. [2021-11-22 16:11:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:11:10,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-11-22 16:11:10,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:10,946 INFO L225 Difference]: With dead ends: 7000 [2021-11-22 16:11:10,946 INFO L226 Difference]: Without dead ends: 4653 [2021-11-22 16:11:10,953 INFO L932 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 [2021-11-22 16:11:10,954 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 1057 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:10,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 1417 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:11:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2021-11-22 16:11:11,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4626. [2021-11-22 16:11:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4621 states have (on average 1.396018177883575) internal successors, (6451), 4625 states have internal predecessors, (6451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 6451 transitions. [2021-11-22 16:11:11,410 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 6451 transitions. Word has length 141 [2021-11-22 16:11:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:11,411 INFO L470 AbstractCegarLoop]: Abstraction has 4626 states and 6451 transitions. [2021-11-22 16:11:11,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 6451 transitions. [2021-11-22 16:11:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-22 16:11:11,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:11,425 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:11,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:11:11,427 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:11,428 INFO L85 PathProgramCache]: Analyzing trace with hash 349588475, now seen corresponding path program 1 times [2021-11-22 16:11:11,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:11,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312689068] [2021-11-22 16:11:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:11,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:11,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:11,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312689068] [2021-11-22 16:11:11,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312689068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:11,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:11,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:11:11,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328540918] [2021-11-22 16:11:11,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:11,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:11:11,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:11:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:11:11,478 INFO L87 Difference]: Start difference. First operand 4626 states and 6451 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:12,121 INFO L93 Difference]: Finished difference Result 13726 states and 19120 transitions. [2021-11-22 16:11:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:11:12,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-11-22 16:11:12,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:12,182 INFO L225 Difference]: With dead ends: 13726 [2021-11-22 16:11:12,183 INFO L226 Difference]: Without dead ends: 9191 [2021-11-22 16:11:12,219 INFO L932 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 [2021-11-22 16:11:12,220 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 512 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:12,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1137 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:11:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2021-11-22 16:11:12,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 4636. [2021-11-22 16:11:12,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4636 states, 4631 states have (on average 1.3951630317426043) internal successors, (6461), 4635 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:12,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 6461 transitions. [2021-11-22 16:11:12,657 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 6461 transitions. Word has length 142 [2021-11-22 16:11:12,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:12,657 INFO L470 AbstractCegarLoop]: Abstraction has 4636 states and 6461 transitions. [2021-11-22 16:11:12,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:12,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 6461 transitions. [2021-11-22 16:11:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-22 16:11:12,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:12,666 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:12,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 16:11:12,667 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash -88637170, now seen corresponding path program 1 times [2021-11-22 16:11:12,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:12,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554873031] [2021-11-22 16:11:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:12,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:12,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:12,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554873031] [2021-11-22 16:11:12,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554873031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:12,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:12,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:11:12,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18417653] [2021-11-22 16:11:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:12,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:11:12,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:11:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:11:12,847 INFO L87 Difference]: Start difference. First operand 4636 states and 6461 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:13,536 INFO L93 Difference]: Finished difference Result 13426 states and 18670 transitions. [2021-11-22 16:11:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:11:13,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-11-22 16:11:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:13,601 INFO L225 Difference]: With dead ends: 13426 [2021-11-22 16:11:13,601 INFO L226 Difference]: Without dead ends: 8891 [2021-11-22 16:11:13,609 INFO L932 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 [2021-11-22 16:11:13,610 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 1051 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:13,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 1406 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:11:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8891 states. [2021-11-22 16:11:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8891 to 8864. [2021-11-22 16:11:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8864 states, 8859 states have (on average 1.379275313240772) internal successors, (12219), 8863 states have internal predecessors, (12219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 12219 transitions. [2021-11-22 16:11:14,358 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 12219 transitions. Word has length 143 [2021-11-22 16:11:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:14,358 INFO L470 AbstractCegarLoop]: Abstraction has 8864 states and 12219 transitions. [2021-11-22 16:11:14,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 12219 transitions. [2021-11-22 16:11:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-22 16:11:14,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:14,373 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:14,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 16:11:14,374 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash -845151558, now seen corresponding path program 1 times [2021-11-22 16:11:14,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:14,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891051636] [2021-11-22 16:11:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:14,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:14,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:14,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891051636] [2021-11-22 16:11:14,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891051636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:14,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:14,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:11:14,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519150775] [2021-11-22 16:11:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:14,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:11:14,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:11:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:11:14,421 INFO L87 Difference]: Start difference. First operand 8864 states and 12219 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:15,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:15,367 INFO L93 Difference]: Finished difference Result 25440 states and 35201 transitions. [2021-11-22 16:11:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:11:15,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-11-22 16:11:15,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:15,411 INFO L225 Difference]: With dead ends: 25440 [2021-11-22 16:11:15,412 INFO L226 Difference]: Without dead ends: 17451 [2021-11-22 16:11:15,429 INFO L932 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 [2021-11-22 16:11:15,430 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 498 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:15,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 1143 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:11:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17451 states. [2021-11-22 16:11:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17451 to 8884. [2021-11-22 16:11:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8884 states, 8879 states have (on average 1.3784209933551075) internal successors, (12239), 8883 states have internal predecessors, (12239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8884 states to 8884 states and 12239 transitions. [2021-11-22 16:11:16,274 INFO L78 Accepts]: Start accepts. Automaton has 8884 states and 12239 transitions. Word has length 144 [2021-11-22 16:11:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:16,275 INFO L470 AbstractCegarLoop]: Abstraction has 8884 states and 12239 transitions. [2021-11-22 16:11:16,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8884 states and 12239 transitions. [2021-11-22 16:11:16,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-22 16:11:16,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:16,293 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:16,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 16:11:16,294 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash -319371603, now seen corresponding path program 1 times [2021-11-22 16:11:16,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:16,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292812001] [2021-11-22 16:11:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:16,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:16,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:16,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292812001] [2021-11-22 16:11:16,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292812001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:16,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:16,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:11:16,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358876632] [2021-11-22 16:11:16,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:16,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:11:16,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:16,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:11:16,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:11:16,471 INFO L87 Difference]: Start difference. First operand 8884 states and 12239 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:17,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:17,005 INFO L93 Difference]: Finished difference Result 14105 states and 19475 transitions. [2021-11-22 16:11:17,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:11:17,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-11-22 16:11:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:17,020 INFO L225 Difference]: With dead ends: 14105 [2021-11-22 16:11:17,020 INFO L226 Difference]: Without dead ends: 5741 [2021-11-22 16:11:17,033 INFO L932 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 [2021-11-22 16:11:17,035 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 65 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:17,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1642 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:11:17,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-11-22 16:11:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 5741. [2021-11-22 16:11:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5741 states, 5736 states have (on average 1.3718619246861925) internal successors, (7869), 5740 states have internal predecessors, (7869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 7869 transitions. [2021-11-22 16:11:17,514 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 7869 transitions. Word has length 145 [2021-11-22 16:11:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:17,514 INFO L470 AbstractCegarLoop]: Abstraction has 5741 states and 7869 transitions. [2021-11-22 16:11:17,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 7869 transitions. [2021-11-22 16:11:17,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 16:11:17,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:17,525 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:17,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 16:11:17,525 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash -14967049, now seen corresponding path program 1 times [2021-11-22 16:11:17,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:17,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773747852] [2021-11-22 16:11:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:17,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:17,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:17,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773747852] [2021-11-22 16:11:17,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773747852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:17,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:17,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:11:17,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637075204] [2021-11-22 16:11:17,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:17,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:11:17,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:11:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:11:17,590 INFO L87 Difference]: Start difference. First operand 5741 states and 7869 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:18,356 INFO L93 Difference]: Finished difference Result 15336 states and 21177 transitions. [2021-11-22 16:11:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:11:18,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-22 16:11:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:18,380 INFO L225 Difference]: With dead ends: 15336 [2021-11-22 16:11:18,380 INFO L226 Difference]: Without dead ends: 10681 [2021-11-22 16:11:18,388 INFO L932 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 [2021-11-22 16:11:18,389 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 449 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:18,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1486 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:11:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10681 states. [2021-11-22 16:11:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10681 to 10661. [2021-11-22 16:11:19,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10661 states, 10656 states have (on average 1.3578265765765767) internal successors, (14469), 10660 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10661 states to 10661 states and 14469 transitions. [2021-11-22 16:11:19,035 INFO L78 Accepts]: Start accepts. Automaton has 10661 states and 14469 transitions. Word has length 153 [2021-11-22 16:11:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:19,035 INFO L470 AbstractCegarLoop]: Abstraction has 10661 states and 14469 transitions. [2021-11-22 16:11:19,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 10661 states and 14469 transitions. [2021-11-22 16:11:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 16:11:19,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:19,052 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:19,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 16:11:19,052 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1413245894, now seen corresponding path program 1 times [2021-11-22 16:11:19,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:19,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111588114] [2021-11-22 16:11:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:19,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:19,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:19,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111588114] [2021-11-22 16:11:19,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111588114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:19,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:19,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:11:19,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534542024] [2021-11-22 16:11:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:19,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:11:19,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:11:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:11:19,117 INFO L87 Difference]: Start difference. First operand 10661 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:20,388 INFO L93 Difference]: Finished difference Result 28545 states and 39231 transitions. [2021-11-22 16:11:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:11:20,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-22 16:11:20,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:20,430 INFO L225 Difference]: With dead ends: 28545 [2021-11-22 16:11:20,430 INFO L226 Difference]: Without dead ends: 20276 [2021-11-22 16:11:20,444 INFO L932 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 [2021-11-22 16:11:20,445 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 392 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:20,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 827 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:11:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20276 states. [2021-11-22 16:11:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20276 to 20243. [2021-11-22 16:11:21,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20243 states, 20238 states have (on average 1.3573969759857694) internal successors, (27471), 20242 states have internal predecessors, (27471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20243 states to 20243 states and 27471 transitions. [2021-11-22 16:11:21,700 INFO L78 Accepts]: Start accepts. Automaton has 20243 states and 27471 transitions. Word has length 153 [2021-11-22 16:11:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:21,701 INFO L470 AbstractCegarLoop]: Abstraction has 20243 states and 27471 transitions. [2021-11-22 16:11:21,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 20243 states and 27471 transitions. [2021-11-22 16:11:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 16:11:21,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:21,733 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:21,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 16:11:21,734 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:21,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:21,734 INFO L85 PathProgramCache]: Analyzing trace with hash 424086943, now seen corresponding path program 1 times [2021-11-22 16:11:21,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:21,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99335706] [2021-11-22 16:11:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:21,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:21,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:21,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99335706] [2021-11-22 16:11:21,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99335706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:21,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:21,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:11:21,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311968482] [2021-11-22 16:11:21,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:21,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:11:21,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:21,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:11:21,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:11:21,891 INFO L87 Difference]: Start difference. First operand 20243 states and 27471 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:23,515 INFO L93 Difference]: Finished difference Result 38202 states and 53840 transitions. [2021-11-22 16:11:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:11:23,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-22 16:11:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:23,686 INFO L225 Difference]: With dead ends: 38202 [2021-11-22 16:11:23,687 INFO L226 Difference]: Without dead ends: 31621 [2021-11-22 16:11:23,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:11:23,701 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 672 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:23,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 971 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:11:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31621 states. [2021-11-22 16:11:25,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31621 to 31619. [2021-11-22 16:11:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31619 states, 31614 states have (on average 1.3705004112102233) internal successors, (43327), 31618 states have internal predecessors, (43327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31619 states to 31619 states and 43327 transitions. [2021-11-22 16:11:25,427 INFO L78 Accepts]: Start accepts. Automaton has 31619 states and 43327 transitions. Word has length 153 [2021-11-22 16:11:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:25,428 INFO L470 AbstractCegarLoop]: Abstraction has 31619 states and 43327 transitions. [2021-11-22 16:11:25,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:25,429 INFO L276 IsEmpty]: Start isEmpty. Operand 31619 states and 43327 transitions. [2021-11-22 16:11:25,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 16:11:25,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:25,468 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:25,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 16:11:25,469 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:25,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:25,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1804095396, now seen corresponding path program 1 times [2021-11-22 16:11:25,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:25,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996324563] [2021-11-22 16:11:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:25,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:25,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:25,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996324563] [2021-11-22 16:11:25,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996324563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:25,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:25,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:11:25,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461243491] [2021-11-22 16:11:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:25,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:11:25,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:11:25,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:11:25,545 INFO L87 Difference]: Start difference. First operand 31619 states and 43327 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:28,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:28,210 INFO L93 Difference]: Finished difference Result 58386 states and 83248 transitions. [2021-11-22 16:11:28,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:11:28,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-22 16:11:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:28,366 INFO L225 Difference]: With dead ends: 58386 [2021-11-22 16:11:28,367 INFO L226 Difference]: Without dead ends: 45677 [2021-11-22 16:11:28,400 INFO L932 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 [2021-11-22 16:11:28,401 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 306 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:28,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 839 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:11:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45677 states. [2021-11-22 16:11:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45677 to 45675. [2021-11-22 16:11:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45675 states, 45670 states have (on average 1.38119115393037) internal successors, (63079), 45674 states have internal predecessors, (63079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45675 states to 45675 states and 63079 transitions. [2021-11-22 16:11:31,395 INFO L78 Accepts]: Start accepts. Automaton has 45675 states and 63079 transitions. Word has length 153 [2021-11-22 16:11:31,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:31,396 INFO L470 AbstractCegarLoop]: Abstraction has 45675 states and 63079 transitions. [2021-11-22 16:11:31,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 45675 states and 63079 transitions. [2021-11-22 16:11:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 16:11:31,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:31,431 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:31,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 16:11:31,432 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash -345875771, now seen corresponding path program 1 times [2021-11-22 16:11:31,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:31,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684615836] [2021-11-22 16:11:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:31,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:31,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:31,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684615836] [2021-11-22 16:11:31,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684615836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:31,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:31,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:11:31,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086337158] [2021-11-22 16:11:31,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:31,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:11:31,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:31,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:11:31,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:11:31,548 INFO L87 Difference]: Start difference. First operand 45675 states and 63079 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:33,940 INFO L93 Difference]: Finished difference Result 72831 states and 100555 transitions. [2021-11-22 16:11:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:11:33,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-22 16:11:33,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:34,002 INFO L225 Difference]: With dead ends: 72831 [2021-11-22 16:11:34,002 INFO L226 Difference]: Without dead ends: 37198 [2021-11-22 16:11:34,038 INFO L932 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 [2021-11-22 16:11:34,039 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 53 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:34,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1631 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:11:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37198 states. [2021-11-22 16:11:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37198 to 37198. [2021-11-22 16:11:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37198 states, 37193 states have (on average 1.3766300110235796) internal successors, (51201), 37197 states have internal predecessors, (51201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37198 states to 37198 states and 51201 transitions. [2021-11-22 16:11:36,402 INFO L78 Accepts]: Start accepts. Automaton has 37198 states and 51201 transitions. Word has length 153 [2021-11-22 16:11:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:36,403 INFO L470 AbstractCegarLoop]: Abstraction has 37198 states and 51201 transitions. [2021-11-22 16:11:36,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 37198 states and 51201 transitions. [2021-11-22 16:11:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-22 16:11:36,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:36,423 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:36,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 16:11:36,423 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:36,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:36,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1760858661, now seen corresponding path program 1 times [2021-11-22 16:11:36,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:36,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795358351] [2021-11-22 16:11:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:36,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:36,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:36,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795358351] [2021-11-22 16:11:36,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795358351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:36,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:36,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 16:11:36,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032194212] [2021-11-22 16:11:36,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:36,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:11:36,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:36,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:11:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:11:36,624 INFO L87 Difference]: Start difference. First operand 37198 states and 51201 transitions. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:40,529 INFO L93 Difference]: Finished difference Result 75651 states and 106363 transitions. [2021-11-22 16:11:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:11:40,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2021-11-22 16:11:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:40,607 INFO L225 Difference]: With dead ends: 75651 [2021-11-22 16:11:40,607 INFO L226 Difference]: Without dead ends: 60149 [2021-11-22 16:11:40,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:11:40,627 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1695 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:40,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1695 Valid, 1245 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:11:40,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60149 states. [2021-11-22 16:11:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60149 to 60147. [2021-11-22 16:11:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60147 states, 60142 states have (on average 1.3571713611120348) internal successors, (81623), 60146 states have internal predecessors, (81623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60147 states to 60147 states and 81623 transitions. [2021-11-22 16:11:44,464 INFO L78 Accepts]: Start accepts. Automaton has 60147 states and 81623 transitions. Word has length 159 [2021-11-22 16:11:44,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:11:44,465 INFO L470 AbstractCegarLoop]: Abstraction has 60147 states and 81623 transitions. [2021-11-22 16:11:44,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:44,466 INFO L276 IsEmpty]: Start isEmpty. Operand 60147 states and 81623 transitions. [2021-11-22 16:11:44,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-22 16:11:44,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:11:44,516 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:11:44,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 16:11:44,517 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:11:44,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:11:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1384607787, now seen corresponding path program 1 times [2021-11-22 16:11:44,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:11:44,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938586054] [2021-11-22 16:11:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:11:44,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:11:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:11:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:44,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:11:44,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938586054] [2021-11-22 16:11:44,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938586054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:11:44,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:11:44,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:11:44,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405742860] [2021-11-22 16:11:44,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:11:44,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:11:44,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:44,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:11:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:11:44,652 INFO L87 Difference]: Start difference. First operand 60147 states and 81623 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:11:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:11:47,891 INFO L93 Difference]: Finished difference Result 111555 states and 151448 transitions. [2021-11-22 16:11:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:11:47,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2021-11-22 16:11:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:11:47,967 INFO L225 Difference]: With dead ends: 111555 [2021-11-22 16:11:47,967 INFO L226 Difference]: Without dead ends: 51466 [2021-11-22 16:11:48,008 INFO L932 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 [2021-11-22 16:11:48,009 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 45 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:11:48,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 1618 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:11:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51466 states.