./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 700a368a7186f7babba672e6f0e63377b52860406179fc124b8eed545215de4f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:35:01,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:35:01,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:35:01,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:35:01,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:35:01,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:35:01,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:35:01,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:35:01,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:35:01,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:35:01,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:35:01,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:35:01,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:35:01,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:35:01,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:35:01,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:35:01,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:35:01,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:35:01,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:35:01,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:35:01,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:35:01,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:35:01,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:35:01,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:35:01,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:35:01,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:35:01,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:35:01,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:35:01,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:35:01,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:35:01,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:35:01,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:35:01,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:35:01,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:35:01,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:35:01,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:35:01,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:35:01,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:35:01,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:35:01,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:35:01,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:35:01,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:35:01,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:35:01,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:35:01,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:35:01,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:35:01,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:35:01,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:35:01,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:35:01,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:35:01,519 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:35:01,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:35:01,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:35:01,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:35:01,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:35:01,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:35:01,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:35:01,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:35:01,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:35:01,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:35:01,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:35:01,522 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:35:01,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:35:01,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:35:01,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:35:01,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:35:01,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:35:01,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:35:01,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:35:01,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:35:01,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:35:01,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:35:01,523 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:35:01,523 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:35:01,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:35:01,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:35:01,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 700a368a7186f7babba672e6f0e63377b52860406179fc124b8eed545215de4f [2021-12-16 01:35:01,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:35:01,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:35:01,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:35:01,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:35:01,775 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:35:01,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2021-12-16 01:35:01,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/246f85f95/6486e1e0839c4d1f97ce01a1298f1778/FLAG13cb06538 [2021-12-16 01:35:02,399 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:35:02,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2021-12-16 01:35:02,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/246f85f95/6486e1e0839c4d1f97ce01a1298f1778/FLAG13cb06538 [2021-12-16 01:35:02,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/246f85f95/6486e1e0839c4d1f97ce01a1298f1778 [2021-12-16 01:35:02,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:35:02,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:35:02,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:35:02,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:35:02,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:35:02,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:35:02" (1/1) ... [2021-12-16 01:35:02,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b901d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:02, skipping insertion in model container [2021-12-16 01:35:02,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:35:02" (1/1) ... [2021-12-16 01:35:02,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:35:02,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:35:03,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14181,14194] [2021-12-16 01:35:03,265 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18885,18898] [2021-12-16 01:35:03,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20177,20190] [2021-12-16 01:35:03,275 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20935,20948] [2021-12-16 01:35:03,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22598,22611] [2021-12-16 01:35:03,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23356,23369] [2021-12-16 01:35:03,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24485,24498] [2021-12-16 01:35:03,299 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27110,27123] [2021-12-16 01:35:03,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27871,27884] [2021-12-16 01:35:03,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29003,29016] [2021-12-16 01:35:03,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31094,31107] [2021-12-16 01:35:03,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35189,35202] [2021-12-16 01:35:03,331 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35950,35963] [2021-12-16 01:35:03,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37043,37056] [2021-12-16 01:35:03,344 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39095,39108] [2021-12-16 01:35:03,355 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42827,42840] [2021-12-16 01:35:03,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50005,50018] [2021-12-16 01:35:03,379 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50766,50779] [2021-12-16 01:35:03,383 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51898,51911] [2021-12-16 01:35:03,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[53989,54002] [2021-12-16 01:35:03,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57550,57563] [2021-12-16 01:35:03,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63548,63561] [2021-12-16 01:35:03,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:35:03,675 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:35:03,739 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14181,14194] [2021-12-16 01:35:03,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18885,18898] [2021-12-16 01:35:03,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20177,20190] [2021-12-16 01:35:03,755 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20935,20948] [2021-12-16 01:35:03,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22598,22611] [2021-12-16 01:35:03,760 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23356,23369] [2021-12-16 01:35:03,763 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24485,24498] [2021-12-16 01:35:03,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27110,27123] [2021-12-16 01:35:03,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27871,27884] [2021-12-16 01:35:03,775 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29003,29016] [2021-12-16 01:35:03,780 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31094,31107] [2021-12-16 01:35:03,787 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35189,35202] [2021-12-16 01:35:03,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35950,35963] [2021-12-16 01:35:03,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37043,37056] [2021-12-16 01:35:03,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39095,39108] [2021-12-16 01:35:03,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42827,42840] [2021-12-16 01:35:03,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50005,50018] [2021-12-16 01:35:03,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50766,50779] [2021-12-16 01:35:03,823 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51898,51911] [2021-12-16 01:35:03,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[53989,54002] [2021-12-16 01:35:03,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57550,57563] [2021-12-16 01:35:03,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63548,63561] [2021-12-16 01:35:04,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:35:04,054 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:35:04,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04 WrapperNode [2021-12-16 01:35:04,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:35:04,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:35:04,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:35:04,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:35:04,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,167 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6591 [2021-12-16 01:35:04,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:35:04,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:35:04,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:35:04,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:35:04,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:35:04,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:35:04,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:35:04,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:35:04,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (1/1) ... [2021-12-16 01:35:04,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:35:04,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:35:04,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 01:35:04,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 01:35:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:35:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:35:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:35:04,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:35:04,604 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:35:04,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:35:06,539 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:35:06,563 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:35:06,563 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 01:35:06,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:35:06 BoogieIcfgContainer [2021-12-16 01:35:06,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:35:06,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:35:06,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:35:06,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:35:06,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:35:02" (1/3) ... [2021-12-16 01:35:06,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10995ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:35:06, skipping insertion in model container [2021-12-16 01:35:06,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:35:04" (2/3) ... [2021-12-16 01:35:06,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10995ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:35:06, skipping insertion in model container [2021-12-16 01:35:06,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:35:06" (3/3) ... [2021-12-16 01:35:06,571 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2021-12-16 01:35:06,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:35:06,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-12-16 01:35:06,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:35:06,615 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 [2021-12-16 01:35:06,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-12-16 01:35:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 1131 states, 1108 states have (on average 1.855595667870036) internal successors, (2056), 1130 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-16 01:35:06,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:06,655 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] [2021-12-16 01:35:06,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:06,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:06,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1995797141, now seen corresponding path program 1 times [2021-12-16 01:35:06,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:06,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144847693] [2021-12-16 01:35:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:06,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:07,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:07,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144847693] [2021-12-16 01:35:07,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144847693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:07,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:07,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:35:07,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193483285] [2021-12-16 01:35:07,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:07,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:35:07,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:07,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:35:07,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:35:07,055 INFO L87 Difference]: Start difference. First operand has 1131 states, 1108 states have (on average 1.855595667870036) internal successors, (2056), 1130 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:07,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:07,752 INFO L93 Difference]: Finished difference Result 1715 states and 3012 transitions. [2021-12-16 01:35:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:35:07,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-12-16 01:35:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:07,772 INFO L225 Difference]: With dead ends: 1715 [2021-12-16 01:35:07,772 INFO L226 Difference]: Without dead ends: 920 [2021-12-16 01:35:07,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:35:07,787 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 4621 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:07,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4621 Valid, 1097 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:35:07,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-12-16 01:35:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2021-12-16 01:35:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 898 states have (on average 1.3017817371937639) internal successors, (1169), 919 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:07,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1169 transitions. [2021-12-16 01:35:07,881 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1169 transitions. Word has length 86 [2021-12-16 01:35:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:07,881 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 1169 transitions. [2021-12-16 01:35:07,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1169 transitions. [2021-12-16 01:35:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-16 01:35:07,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:07,885 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] [2021-12-16 01:35:07,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:35:07,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:07,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:07,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1490420377, now seen corresponding path program 1 times [2021-12-16 01:35:07,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:07,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574553430] [2021-12-16 01:35:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:07,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:07,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:07,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574553430] [2021-12-16 01:35:07,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574553430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:07,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:07,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:35:07,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321961561] [2021-12-16 01:35:07,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:07,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:35:07,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:35:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:35:07,982 INFO L87 Difference]: Start difference. First operand 920 states and 1169 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:08,448 INFO L93 Difference]: Finished difference Result 1495 states and 1962 transitions. [2021-12-16 01:35:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:35:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-12-16 01:35:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:08,451 INFO L225 Difference]: With dead ends: 1495 [2021-12-16 01:35:08,451 INFO L226 Difference]: Without dead ends: 792 [2021-12-16 01:35:08,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:35:08,453 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 2962 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:08,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2962 Valid, 592 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 01:35:08,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-12-16 01:35:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 792. [2021-12-16 01:35:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 770 states have (on average 1.3298701298701299) internal successors, (1024), 791 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1024 transitions. [2021-12-16 01:35:08,493 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1024 transitions. Word has length 87 [2021-12-16 01:35:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:08,493 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1024 transitions. [2021-12-16 01:35:08,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1024 transitions. [2021-12-16 01:35:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-16 01:35:08,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:08,495 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] [2021-12-16 01:35:08,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:35:08,496 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:08,496 INFO L85 PathProgramCache]: Analyzing trace with hash -170044982, now seen corresponding path program 1 times [2021-12-16 01:35:08,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:08,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285088004] [2021-12-16 01:35:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:08,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:08,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:08,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285088004] [2021-12-16 01:35:08,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285088004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:08,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:08,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:35:08,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126641405] [2021-12-16 01:35:08,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:08,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:35:08,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:35:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:35:08,570 INFO L87 Difference]: Start difference. First operand 792 states and 1024 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:08,964 INFO L93 Difference]: Finished difference Result 1367 states and 1816 transitions. [2021-12-16 01:35:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:35:08,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-12-16 01:35:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:08,969 INFO L225 Difference]: With dead ends: 1367 [2021-12-16 01:35:08,969 INFO L226 Difference]: Without dead ends: 707 [2021-12-16 01:35:08,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:35:08,972 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 2731 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2731 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:08,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2731 Valid, 534 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:35:08,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-12-16 01:35:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2021-12-16 01:35:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 685 states have (on average 1.3576642335766422) internal successors, (930), 706 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 930 transitions. [2021-12-16 01:35:09,001 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 930 transitions. Word has length 88 [2021-12-16 01:35:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:09,002 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 930 transitions. [2021-12-16 01:35:09,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 930 transitions. [2021-12-16 01:35:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-16 01:35:09,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:09,004 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] [2021-12-16 01:35:09,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:35:09,005 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash 19097864, now seen corresponding path program 1 times [2021-12-16 01:35:09,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:09,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680404455] [2021-12-16 01:35:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:09,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:09,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:09,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680404455] [2021-12-16 01:35:09,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680404455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:09,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:09,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:35:09,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638170960] [2021-12-16 01:35:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:09,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:35:09,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:35:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:35:09,126 INFO L87 Difference]: Start difference. First operand 707 states and 930 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:09,630 INFO L93 Difference]: Finished difference Result 1282 states and 1721 transitions. [2021-12-16 01:35:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:35:09,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-12-16 01:35:09,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:09,634 INFO L225 Difference]: With dead ends: 1282 [2021-12-16 01:35:09,634 INFO L226 Difference]: Without dead ends: 687 [2021-12-16 01:35:09,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:35:09,637 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 2510 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:09,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2510 Valid, 451 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:35:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-12-16 01:35:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2021-12-16 01:35:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 665 states have (on average 1.3609022556390977) internal successors, (905), 686 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 905 transitions. [2021-12-16 01:35:09,656 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 905 transitions. Word has length 89 [2021-12-16 01:35:09,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:09,657 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 905 transitions. [2021-12-16 01:35:09,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 905 transitions. [2021-12-16 01:35:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-16 01:35:09,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:09,663 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] [2021-12-16 01:35:09,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:35:09,664 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:09,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:09,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1199910331, now seen corresponding path program 1 times [2021-12-16 01:35:09,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:09,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916282393] [2021-12-16 01:35:09,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:09,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:09,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:09,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916282393] [2021-12-16 01:35:09,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916282393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:09,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:09,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:35:09,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026319488] [2021-12-16 01:35:09,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:09,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:35:09,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:09,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:35:09,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:35:09,757 INFO L87 Difference]: Start difference. First operand 687 states and 905 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:10,089 INFO L93 Difference]: Finished difference Result 1262 states and 1695 transitions. [2021-12-16 01:35:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:35:10,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-12-16 01:35:10,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:10,093 INFO L225 Difference]: With dead ends: 1262 [2021-12-16 01:35:10,093 INFO L226 Difference]: Without dead ends: 656 [2021-12-16 01:35:10,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:35:10,094 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 2540 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:10,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2540 Valid, 502 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:35:10,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-12-16 01:35:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2021-12-16 01:35:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 634 states have (on average 1.3738170347003154) internal successors, (871), 655 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 871 transitions. [2021-12-16 01:35:10,115 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 871 transitions. Word has length 90 [2021-12-16 01:35:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:10,116 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 871 transitions. [2021-12-16 01:35:10,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 871 transitions. [2021-12-16 01:35:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 01:35:10,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:10,118 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] [2021-12-16 01:35:10,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:35:10,118 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:10,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash -270868775, now seen corresponding path program 1 times [2021-12-16 01:35:10,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:10,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188645904] [2021-12-16 01:35:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:10,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:10,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:10,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188645904] [2021-12-16 01:35:10,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188645904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:10,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:10,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:35:10,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541409691] [2021-12-16 01:35:10,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:10,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:35:10,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:10,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:35:10,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:35:10,205 INFO L87 Difference]: Start difference. First operand 656 states and 871 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:10,531 INFO L93 Difference]: Finished difference Result 1231 states and 1660 transitions. [2021-12-16 01:35:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:35:10,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-16 01:35:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:10,534 INFO L225 Difference]: With dead ends: 1231 [2021-12-16 01:35:10,534 INFO L226 Difference]: Without dead ends: 642 [2021-12-16 01:35:10,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:35:10,536 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 2475 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2475 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:10,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2475 Valid, 496 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:35:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-12-16 01:35:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-12-16 01:35:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3790322580645162) internal successors, (855), 641 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 855 transitions. [2021-12-16 01:35:10,553 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 855 transitions. Word has length 91 [2021-12-16 01:35:10,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:10,554 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 855 transitions. [2021-12-16 01:35:10,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:10,554 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 855 transitions. [2021-12-16 01:35:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-16 01:35:10,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:10,555 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] [2021-12-16 01:35:10,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:35:10,555 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:10,556 INFO L85 PathProgramCache]: Analyzing trace with hash 471449544, now seen corresponding path program 1 times [2021-12-16 01:35:10,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:10,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874982244] [2021-12-16 01:35:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:10,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:10,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:10,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874982244] [2021-12-16 01:35:10,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874982244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:10,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:10,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:10,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513958521] [2021-12-16 01:35:10,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:10,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:10,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:10,670 INFO L87 Difference]: Start difference. First operand 642 states and 855 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:11,694 INFO L93 Difference]: Finished difference Result 1203 states and 1621 transitions. [2021-12-16 01:35:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-12-16 01:35:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:11,698 INFO L225 Difference]: With dead ends: 1203 [2021-12-16 01:35:11,698 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:11,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:11,699 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 3714 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3714 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:11,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3714 Valid, 2236 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3774193548387097) internal successors, (854), 641 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 854 transitions. [2021-12-16 01:35:11,724 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 854 transitions. Word has length 92 [2021-12-16 01:35:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:11,725 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 854 transitions. [2021-12-16 01:35:11,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 854 transitions. [2021-12-16 01:35:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-16 01:35:11,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:11,726 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] [2021-12-16 01:35:11,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:35:11,726 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1530881816, now seen corresponding path program 1 times [2021-12-16 01:35:11,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:11,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274769553] [2021-12-16 01:35:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:11,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:11,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:11,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274769553] [2021-12-16 01:35:11,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274769553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:11,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:11,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:11,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69111339] [2021-12-16 01:35:11,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:11,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:11,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:11,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:11,835 INFO L87 Difference]: Start difference. First operand 642 states and 854 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:12,907 INFO L93 Difference]: Finished difference Result 1338 states and 1818 transitions. [2021-12-16 01:35:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-12-16 01:35:12,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:12,911 INFO L225 Difference]: With dead ends: 1338 [2021-12-16 01:35:12,911 INFO L226 Difference]: Without dead ends: 1144 [2021-12-16 01:35:12,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:12,912 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 3622 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3622 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:12,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3622 Valid, 2821 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 01:35:12,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-12-16 01:35:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 642. [2021-12-16 01:35:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3758064516129032) internal successors, (853), 641 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 853 transitions. [2021-12-16 01:35:12,941 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 853 transitions. Word has length 92 [2021-12-16 01:35:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:12,941 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 853 transitions. [2021-12-16 01:35:12,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 853 transitions. [2021-12-16 01:35:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-16 01:35:12,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:12,943 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] [2021-12-16 01:35:12,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:35:12,943 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash 889427447, now seen corresponding path program 1 times [2021-12-16 01:35:12,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:12,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388543197] [2021-12-16 01:35:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:12,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:13,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:13,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388543197] [2021-12-16 01:35:13,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388543197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:13,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:13,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:35:13,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817434418] [2021-12-16 01:35:13,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:13,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 01:35:13,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:13,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 01:35:13,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:35:13,034 INFO L87 Difference]: Start difference. First operand 642 states and 853 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:13,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:13,738 INFO L93 Difference]: Finished difference Result 1212 states and 1568 transitions. [2021-12-16 01:35:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:35:13,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-12-16 01:35:13,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:13,741 INFO L225 Difference]: With dead ends: 1212 [2021-12-16 01:35:13,741 INFO L226 Difference]: Without dead ends: 865 [2021-12-16 01:35:13,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-16 01:35:13,744 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 2795 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2795 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:13,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2795 Valid, 1045 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:35:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-12-16 01:35:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 642. [2021-12-16 01:35:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3741935483870968) internal successors, (852), 641 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 852 transitions. [2021-12-16 01:35:13,771 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 852 transitions. Word has length 92 [2021-12-16 01:35:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:13,771 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 852 transitions. [2021-12-16 01:35:13,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:13,771 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 852 transitions. [2021-12-16 01:35:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 01:35:13,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:13,773 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] [2021-12-16 01:35:13,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:35:13,773 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:13,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash -709696546, now seen corresponding path program 1 times [2021-12-16 01:35:13,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:13,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754714148] [2021-12-16 01:35:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:13,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:13,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:13,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754714148] [2021-12-16 01:35:13,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754714148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:13,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:13,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:13,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790057066] [2021-12-16 01:35:13,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:13,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:13,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:13,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:13,916 INFO L87 Difference]: Start difference. First operand 642 states and 852 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:14,873 INFO L93 Difference]: Finished difference Result 1367 states and 1842 transitions. [2021-12-16 01:35:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:14,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 01:35:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:14,877 INFO L225 Difference]: With dead ends: 1367 [2021-12-16 01:35:14,877 INFO L226 Difference]: Without dead ends: 1144 [2021-12-16 01:35:14,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:14,878 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 2338 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:14,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 2924 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:14,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-12-16 01:35:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 642. [2021-12-16 01:35:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3725806451612903) internal successors, (851), 641 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 851 transitions. [2021-12-16 01:35:14,907 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 851 transitions. Word has length 94 [2021-12-16 01:35:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:14,907 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 851 transitions. [2021-12-16 01:35:14,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 851 transitions. [2021-12-16 01:35:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 01:35:14,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:14,909 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] [2021-12-16 01:35:14,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:35:14,909 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash -904842275, now seen corresponding path program 1 times [2021-12-16 01:35:14,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:14,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5463706] [2021-12-16 01:35:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:14,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:15,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:15,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5463706] [2021-12-16 01:35:15,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5463706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:15,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:15,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:15,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33154840] [2021-12-16 01:35:15,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:15,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:15,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:15,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:15,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:15,014 INFO L87 Difference]: Start difference. First operand 642 states and 851 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:16,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:16,053 INFO L93 Difference]: Finished difference Result 1232 states and 1663 transitions. [2021-12-16 01:35:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:16,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 01:35:16,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:16,057 INFO L225 Difference]: With dead ends: 1232 [2021-12-16 01:35:16,057 INFO L226 Difference]: Without dead ends: 1132 [2021-12-16 01:35:16,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:16,058 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 3296 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:16,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3296 Valid, 2625 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 01:35:16,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-16 01:35:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-16 01:35:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3709677419354838) internal successors, (850), 641 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 850 transitions. [2021-12-16 01:35:16,085 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 850 transitions. Word has length 94 [2021-12-16 01:35:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:16,085 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 850 transitions. [2021-12-16 01:35:16,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 850 transitions. [2021-12-16 01:35:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 01:35:16,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:16,087 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] [2021-12-16 01:35:16,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:35:16,087 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:16,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:16,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1510616083, now seen corresponding path program 1 times [2021-12-16 01:35:16,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:16,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836734028] [2021-12-16 01:35:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:16,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:16,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:16,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836734028] [2021-12-16 01:35:16,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836734028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:16,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:16,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:16,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114304114] [2021-12-16 01:35:16,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:16,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:16,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:16,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:16,201 INFO L87 Difference]: Start difference. First operand 642 states and 850 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:17,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:17,440 INFO L93 Difference]: Finished difference Result 1279 states and 1729 transitions. [2021-12-16 01:35:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:17,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 01:35:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:17,444 INFO L225 Difference]: With dead ends: 1279 [2021-12-16 01:35:17,444 INFO L226 Difference]: Without dead ends: 1140 [2021-12-16 01:35:17,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-16 01:35:17,446 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 3819 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 3288 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:17,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3819 Valid, 3288 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:35:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-16 01:35:17,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 642. [2021-12-16 01:35:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3693548387096774) internal successors, (849), 641 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 849 transitions. [2021-12-16 01:35:17,476 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 849 transitions. Word has length 94 [2021-12-16 01:35:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:17,476 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 849 transitions. [2021-12-16 01:35:17,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 849 transitions. [2021-12-16 01:35:17,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 01:35:17,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:17,478 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] [2021-12-16 01:35:17,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:35:17,478 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:17,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:17,478 INFO L85 PathProgramCache]: Analyzing trace with hash -10217144, now seen corresponding path program 1 times [2021-12-16 01:35:17,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:17,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132047804] [2021-12-16 01:35:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:17,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:17,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:17,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132047804] [2021-12-16 01:35:17,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132047804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:17,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:17,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:17,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360567942] [2021-12-16 01:35:17,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:17,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:17,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:17,585 INFO L87 Difference]: Start difference. First operand 642 states and 849 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:18,677 INFO L93 Difference]: Finished difference Result 1279 states and 1731 transitions. [2021-12-16 01:35:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:18,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 01:35:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:18,682 INFO L225 Difference]: With dead ends: 1279 [2021-12-16 01:35:18,682 INFO L226 Difference]: Without dead ends: 1140 [2021-12-16 01:35:18,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:18,685 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 2220 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:18,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2220 Valid, 3115 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 01:35:18,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-16 01:35:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 642. [2021-12-16 01:35:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.367741935483871) internal successors, (848), 641 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 848 transitions. [2021-12-16 01:35:18,717 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 848 transitions. Word has length 94 [2021-12-16 01:35:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:18,717 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 848 transitions. [2021-12-16 01:35:18,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:18,718 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 848 transitions. [2021-12-16 01:35:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 01:35:18,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:18,719 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] [2021-12-16 01:35:18,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:35:18,719 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1869291794, now seen corresponding path program 1 times [2021-12-16 01:35:18,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:18,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46028357] [2021-12-16 01:35:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:18,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:18,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:18,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46028357] [2021-12-16 01:35:18,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46028357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:18,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:18,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:18,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385103102] [2021-12-16 01:35:18,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:18,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:18,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:18,823 INFO L87 Difference]: Start difference. First operand 642 states and 848 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:19,787 INFO L93 Difference]: Finished difference Result 1232 states and 1661 transitions. [2021-12-16 01:35:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:19,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 01:35:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:19,791 INFO L225 Difference]: With dead ends: 1232 [2021-12-16 01:35:19,791 INFO L226 Difference]: Without dead ends: 1132 [2021-12-16 01:35:19,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:19,792 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 3940 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3940 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:19,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3940 Valid, 2677 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-16 01:35:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-16 01:35:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3661290322580646) internal successors, (847), 641 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 847 transitions. [2021-12-16 01:35:19,864 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 847 transitions. Word has length 94 [2021-12-16 01:35:19,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:19,865 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 847 transitions. [2021-12-16 01:35:19,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 847 transitions. [2021-12-16 01:35:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 01:35:19,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:19,866 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] [2021-12-16 01:35:19,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:35:19,866 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:19,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1072430261, now seen corresponding path program 1 times [2021-12-16 01:35:19,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:19,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424997753] [2021-12-16 01:35:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:19,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:19,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:19,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424997753] [2021-12-16 01:35:19,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424997753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:19,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:19,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:19,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377496380] [2021-12-16 01:35:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:19,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:19,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:19,969 INFO L87 Difference]: Start difference. First operand 642 states and 847 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:21,049 INFO L93 Difference]: Finished difference Result 1265 states and 1712 transitions. [2021-12-16 01:35:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 01:35:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:21,064 INFO L225 Difference]: With dead ends: 1265 [2021-12-16 01:35:21,065 INFO L226 Difference]: Without dead ends: 1140 [2021-12-16 01:35:21,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-16 01:35:21,068 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 4411 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:21,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4411 Valid, 2939 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 01:35:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-16 01:35:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 642. [2021-12-16 01:35:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.364516129032258) internal successors, (846), 641 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 846 transitions. [2021-12-16 01:35:21,104 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 846 transitions. Word has length 94 [2021-12-16 01:35:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:21,104 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 846 transitions. [2021-12-16 01:35:21,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 846 transitions. [2021-12-16 01:35:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 01:35:21,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:21,105 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] [2021-12-16 01:35:21,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:35:21,106 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:21,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1752938330, now seen corresponding path program 1 times [2021-12-16 01:35:21,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:21,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124788609] [2021-12-16 01:35:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:21,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:21,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:21,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124788609] [2021-12-16 01:35:21,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124788609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:21,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:21,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:21,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413843981] [2021-12-16 01:35:21,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:21,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:21,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:21,220 INFO L87 Difference]: Start difference. First operand 642 states and 846 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:22,279 INFO L93 Difference]: Finished difference Result 1227 states and 1654 transitions. [2021-12-16 01:35:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:22,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 01:35:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:22,282 INFO L225 Difference]: With dead ends: 1227 [2021-12-16 01:35:22,283 INFO L226 Difference]: Without dead ends: 1132 [2021-12-16 01:35:22,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:22,284 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 3116 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3116 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:22,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3116 Valid, 3117 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-16 01:35:22,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-16 01:35:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3629032258064515) internal successors, (845), 641 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 845 transitions. [2021-12-16 01:35:22,322 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 845 transitions. Word has length 94 [2021-12-16 01:35:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:22,324 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 845 transitions. [2021-12-16 01:35:22,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 845 transitions. [2021-12-16 01:35:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:22,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:22,325 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] [2021-12-16 01:35:22,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 01:35:22,326 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:22,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1333702137, now seen corresponding path program 1 times [2021-12-16 01:35:22,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:22,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445943918] [2021-12-16 01:35:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:22,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:22,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:22,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445943918] [2021-12-16 01:35:22,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445943918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:22,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:22,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:22,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574482886] [2021-12-16 01:35:22,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:22,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:22,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:22,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:22,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:22,488 INFO L87 Difference]: Start difference. First operand 642 states and 845 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:23,724 INFO L93 Difference]: Finished difference Result 1241 states and 1666 transitions. [2021-12-16 01:35:23,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:23,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:23,731 INFO L225 Difference]: With dead ends: 1241 [2021-12-16 01:35:23,731 INFO L226 Difference]: Without dead ends: 1132 [2021-12-16 01:35:23,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:23,732 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 3331 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:23,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3331 Valid, 3320 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:35:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-16 01:35:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-16 01:35:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3612903225806452) internal successors, (844), 641 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 844 transitions. [2021-12-16 01:35:23,773 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 844 transitions. Word has length 96 [2021-12-16 01:35:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:23,773 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 844 transitions. [2021-12-16 01:35:23,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 844 transitions. [2021-12-16 01:35:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:23,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:23,775 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] [2021-12-16 01:35:23,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 01:35:23,776 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:23,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash 924856909, now seen corresponding path program 1 times [2021-12-16 01:35:23,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:23,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757974068] [2021-12-16 01:35:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:23,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:23,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:23,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757974068] [2021-12-16 01:35:23,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757974068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:23,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:23,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:23,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916591329] [2021-12-16 01:35:23,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:23,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:23,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:23,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:23,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:23,903 INFO L87 Difference]: Start difference. First operand 642 states and 844 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:24,956 INFO L93 Difference]: Finished difference Result 1203 states and 1610 transitions. [2021-12-16 01:35:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:24,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:24,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:24,967 INFO L225 Difference]: With dead ends: 1203 [2021-12-16 01:35:24,968 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:24,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:24,970 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 3881 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3881 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:24,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3881 Valid, 3185 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:24,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3596774193548387) internal successors, (843), 641 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 843 transitions. [2021-12-16 01:35:25,048 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 843 transitions. Word has length 96 [2021-12-16 01:35:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:25,049 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 843 transitions. [2021-12-16 01:35:25,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:25,049 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 843 transitions. [2021-12-16 01:35:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:25,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:25,064 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] [2021-12-16 01:35:25,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 01:35:25,065 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:25,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:25,065 INFO L85 PathProgramCache]: Analyzing trace with hash 92967727, now seen corresponding path program 1 times [2021-12-16 01:35:25,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:25,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339296187] [2021-12-16 01:35:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:25,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:25,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:25,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339296187] [2021-12-16 01:35:25,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339296187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:25,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:25,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:25,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137022273] [2021-12-16 01:35:25,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:25,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:25,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:25,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:25,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:25,154 INFO L87 Difference]: Start difference. First operand 642 states and 843 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:26,021 INFO L93 Difference]: Finished difference Result 1294 states and 1734 transitions. [2021-12-16 01:35:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:26,022 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:26,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:26,039 INFO L225 Difference]: With dead ends: 1294 [2021-12-16 01:35:26,039 INFO L226 Difference]: Without dead ends: 1140 [2021-12-16 01:35:26,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:26,042 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 3052 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:26,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3052 Valid, 3134 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:35:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-16 01:35:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 642. [2021-12-16 01:35:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3580645161290323) internal successors, (842), 641 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 842 transitions. [2021-12-16 01:35:26,144 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 842 transitions. Word has length 96 [2021-12-16 01:35:26,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:26,145 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 842 transitions. [2021-12-16 01:35:26,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:26,145 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 842 transitions. [2021-12-16 01:35:26,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:26,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:26,147 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] [2021-12-16 01:35:26,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 01:35:26,148 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:26,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:26,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1818861412, now seen corresponding path program 1 times [2021-12-16 01:35:26,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:26,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419276555] [2021-12-16 01:35:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:26,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:26,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:26,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419276555] [2021-12-16 01:35:26,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419276555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:26,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:26,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:26,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992274545] [2021-12-16 01:35:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:26,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:26,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:26,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:26,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:26,270 INFO L87 Difference]: Start difference. First operand 642 states and 842 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:27,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:27,007 INFO L93 Difference]: Finished difference Result 1203 states and 1607 transitions. [2021-12-16 01:35:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:27,007 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:27,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:27,010 INFO L225 Difference]: With dead ends: 1203 [2021-12-16 01:35:27,010 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:27,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:27,011 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 3231 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:27,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3231 Valid, 2721 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:35:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3564516129032258) internal successors, (841), 641 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 841 transitions. [2021-12-16 01:35:27,074 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 841 transitions. Word has length 96 [2021-12-16 01:35:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:27,074 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 841 transitions. [2021-12-16 01:35:27,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 841 transitions. [2021-12-16 01:35:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:27,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:27,075 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] [2021-12-16 01:35:27,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 01:35:27,076 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:27,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:27,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1839313585, now seen corresponding path program 1 times [2021-12-16 01:35:27,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:27,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209206339] [2021-12-16 01:35:27,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:27,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:27,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:27,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209206339] [2021-12-16 01:35:27,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209206339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:27,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:27,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:27,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034581162] [2021-12-16 01:35:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:27,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:27,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:27,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:27,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:27,170 INFO L87 Difference]: Start difference. First operand 642 states and 841 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:28,200 INFO L93 Difference]: Finished difference Result 1199 states and 1602 transitions. [2021-12-16 01:35:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:28,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:28,203 INFO L225 Difference]: With dead ends: 1199 [2021-12-16 01:35:28,203 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:28,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:28,204 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 3864 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:28,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3864 Valid, 3189 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3548387096774193) internal successors, (840), 641 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 840 transitions. [2021-12-16 01:35:28,243 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 840 transitions. Word has length 96 [2021-12-16 01:35:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:28,244 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 840 transitions. [2021-12-16 01:35:28,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 840 transitions. [2021-12-16 01:35:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:28,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:28,245 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] [2021-12-16 01:35:28,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 01:35:28,245 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:28,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:28,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1859604465, now seen corresponding path program 1 times [2021-12-16 01:35:28,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:28,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805282799] [2021-12-16 01:35:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:28,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:28,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805282799] [2021-12-16 01:35:28,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805282799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:28,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:28,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:28,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394712137] [2021-12-16 01:35:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:28,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:28,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:28,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:28,365 INFO L87 Difference]: Start difference. First operand 642 states and 840 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:29,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:29,398 INFO L93 Difference]: Finished difference Result 1241 states and 1659 transitions. [2021-12-16 01:35:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:29,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:29,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:29,403 INFO L225 Difference]: With dead ends: 1241 [2021-12-16 01:35:29,403 INFO L226 Difference]: Without dead ends: 1132 [2021-12-16 01:35:29,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:29,404 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 3548 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:29,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3548 Valid, 3403 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-16 01:35:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-16 01:35:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.353225806451613) internal successors, (839), 641 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 839 transitions. [2021-12-16 01:35:29,445 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 839 transitions. Word has length 96 [2021-12-16 01:35:29,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:29,445 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 839 transitions. [2021-12-16 01:35:29,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 839 transitions. [2021-12-16 01:35:29,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:29,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:29,446 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] [2021-12-16 01:35:29,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 01:35:29,447 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1450759237, now seen corresponding path program 1 times [2021-12-16 01:35:29,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:29,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354833224] [2021-12-16 01:35:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:29,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:29,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:29,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354833224] [2021-12-16 01:35:29,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354833224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:29,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:29,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:29,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911886001] [2021-12-16 01:35:29,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:29,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:29,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:29,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:29,541 INFO L87 Difference]: Start difference. First operand 642 states and 839 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:30,587 INFO L93 Difference]: Finished difference Result 1203 states and 1603 transitions. [2021-12-16 01:35:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:30,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:30,591 INFO L225 Difference]: With dead ends: 1203 [2021-12-16 01:35:30,591 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:30,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:30,593 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 3818 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3818 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:30,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3818 Valid, 3283 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:30,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3516129032258064) internal successors, (838), 641 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 838 transitions. [2021-12-16 01:35:30,637 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 838 transitions. Word has length 96 [2021-12-16 01:35:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:30,637 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 838 transitions. [2021-12-16 01:35:30,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:30,637 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 838 transitions. [2021-12-16 01:35:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:30,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:30,638 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] [2021-12-16 01:35:30,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 01:35:30,639 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:30,639 INFO L85 PathProgramCache]: Analyzing trace with hash 627769446, now seen corresponding path program 1 times [2021-12-16 01:35:30,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:30,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548444338] [2021-12-16 01:35:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:30,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:30,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:30,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548444338] [2021-12-16 01:35:30,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548444338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:30,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:30,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:30,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913647417] [2021-12-16 01:35:30,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:30,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:30,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:30,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:30,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:30,728 INFO L87 Difference]: Start difference. First operand 642 states and 838 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:31,583 INFO L93 Difference]: Finished difference Result 1241 states and 1657 transitions. [2021-12-16 01:35:31,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:31,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:31,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:31,586 INFO L225 Difference]: With dead ends: 1241 [2021-12-16 01:35:31,586 INFO L226 Difference]: Without dead ends: 1132 [2021-12-16 01:35:31,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:31,591 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 3731 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3731 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:31,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3731 Valid, 3143 Invalid, 2410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:35:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-16 01:35:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-16 01:35:31,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.35) internal successors, (837), 641 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 837 transitions. [2021-12-16 01:35:31,647 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 837 transitions. Word has length 96 [2021-12-16 01:35:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:31,647 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 837 transitions. [2021-12-16 01:35:31,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 837 transitions. [2021-12-16 01:35:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:31,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:31,651 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] [2021-12-16 01:35:31,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 01:35:31,652 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:31,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:31,652 INFO L85 PathProgramCache]: Analyzing trace with hash 218924218, now seen corresponding path program 1 times [2021-12-16 01:35:31,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:31,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106042401] [2021-12-16 01:35:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:31,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:31,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:31,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106042401] [2021-12-16 01:35:31,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106042401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:31,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:31,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:31,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817813198] [2021-12-16 01:35:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:31,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:31,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:31,841 INFO L87 Difference]: Start difference. First operand 642 states and 837 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:33,152 INFO L93 Difference]: Finished difference Result 1203 states and 1602 transitions. [2021-12-16 01:35:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:33,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:33,155 INFO L225 Difference]: With dead ends: 1203 [2021-12-16 01:35:33,155 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:33,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:33,156 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 3675 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 3587 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:33,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3675 Valid, 3587 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 01:35:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3483870967741935) internal successors, (836), 641 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 836 transitions. [2021-12-16 01:35:33,214 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 836 transitions. Word has length 96 [2021-12-16 01:35:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:33,214 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 836 transitions. [2021-12-16 01:35:33,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 836 transitions. [2021-12-16 01:35:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:33,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:33,217 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] [2021-12-16 01:35:33,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 01:35:33,217 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:33,217 INFO L85 PathProgramCache]: Analyzing trace with hash 587026393, now seen corresponding path program 1 times [2021-12-16 01:35:33,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:33,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568586171] [2021-12-16 01:35:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:33,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:33,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:33,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568586171] [2021-12-16 01:35:33,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568586171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:33,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:33,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:33,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559934918] [2021-12-16 01:35:33,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:33,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:33,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:33,314 INFO L87 Difference]: Start difference. First operand 642 states and 836 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:34,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:34,335 INFO L93 Difference]: Finished difference Result 1203 states and 1601 transitions. [2021-12-16 01:35:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:34,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:34,351 INFO L225 Difference]: With dead ends: 1203 [2021-12-16 01:35:34,351 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:34,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:34,352 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 2075 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 2317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:34,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2075 Valid, 2917 Invalid, 2317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:34,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:34,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.346774193548387) internal successors, (835), 641 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 835 transitions. [2021-12-16 01:35:34,399 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 835 transitions. Word has length 96 [2021-12-16 01:35:34,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:34,400 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 835 transitions. [2021-12-16 01:35:34,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 835 transitions. [2021-12-16 01:35:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:34,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:34,401 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] [2021-12-16 01:35:34,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-16 01:35:34,401 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:34,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:34,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1223338080, now seen corresponding path program 1 times [2021-12-16 01:35:34,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:34,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468666023] [2021-12-16 01:35:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:34,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:34,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:34,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468666023] [2021-12-16 01:35:34,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468666023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:34,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:34,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:34,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140429890] [2021-12-16 01:35:34,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:34,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:34,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:34,514 INFO L87 Difference]: Start difference. First operand 642 states and 835 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:35,516 INFO L93 Difference]: Finished difference Result 1199 states and 1595 transitions. [2021-12-16 01:35:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:35,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:35,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:35,520 INFO L225 Difference]: With dead ends: 1199 [2021-12-16 01:35:35,520 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:35,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:35,521 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 3756 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:35,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3756 Valid, 3388 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3451612903225807) internal successors, (834), 641 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 834 transitions. [2021-12-16 01:35:35,566 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 834 transitions. Word has length 96 [2021-12-16 01:35:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:35,567 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 834 transitions. [2021-12-16 01:35:35,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 834 transitions. [2021-12-16 01:35:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:35,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:35,568 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] [2021-12-16 01:35:35,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-16 01:35:35,569 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1385819023, now seen corresponding path program 1 times [2021-12-16 01:35:35,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:35,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005765997] [2021-12-16 01:35:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:35,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:35,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:35,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005765997] [2021-12-16 01:35:35,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005765997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:35,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:35,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:35,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486288338] [2021-12-16 01:35:35,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:35,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:35,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:35,677 INFO L87 Difference]: Start difference. First operand 642 states and 834 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:36,661 INFO L93 Difference]: Finished difference Result 1232 states and 1641 transitions. [2021-12-16 01:35:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:36,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:36,663 INFO L225 Difference]: With dead ends: 1232 [2021-12-16 01:35:36,663 INFO L226 Difference]: Without dead ends: 1132 [2021-12-16 01:35:36,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:36,664 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 2911 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2911 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:36,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2911 Valid, 3666 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-16 01:35:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-16 01:35:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3435483870967742) internal successors, (833), 641 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 833 transitions. [2021-12-16 01:35:36,723 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 833 transitions. Word has length 96 [2021-12-16 01:35:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:36,723 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 833 transitions. [2021-12-16 01:35:36,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 833 transitions. [2021-12-16 01:35:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:36,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:36,725 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] [2021-12-16 01:35:36,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-16 01:35:36,725 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:36,725 INFO L85 PathProgramCache]: Analyzing trace with hash -236760265, now seen corresponding path program 1 times [2021-12-16 01:35:36,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:36,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839037484] [2021-12-16 01:35:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:36,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:36,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:36,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839037484] [2021-12-16 01:35:36,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839037484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:36,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:36,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:36,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958613086] [2021-12-16 01:35:36,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:36,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:36,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:36,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:36,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:36,808 INFO L87 Difference]: Start difference. First operand 642 states and 833 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:37,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:37,690 INFO L93 Difference]: Finished difference Result 1199 states and 1593 transitions. [2021-12-16 01:35:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:37,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:37,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:37,692 INFO L225 Difference]: With dead ends: 1199 [2021-12-16 01:35:37,692 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:37,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:37,693 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 3618 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:37,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3618 Valid, 3675 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:35:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3419354838709678) internal successors, (832), 641 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 832 transitions. [2021-12-16 01:35:37,748 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 832 transitions. Word has length 96 [2021-12-16 01:35:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:37,749 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 832 transitions. [2021-12-16 01:35:37,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 832 transitions. [2021-12-16 01:35:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:37,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:37,750 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] [2021-12-16 01:35:37,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-16 01:35:37,750 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash -35876805, now seen corresponding path program 1 times [2021-12-16 01:35:37,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:37,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505088339] [2021-12-16 01:35:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:37,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:37,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:37,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505088339] [2021-12-16 01:35:37,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505088339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:37,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:37,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:37,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461245817] [2021-12-16 01:35:37,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:37,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:37,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:37,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:37,842 INFO L87 Difference]: Start difference. First operand 642 states and 832 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:38,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:38,821 INFO L93 Difference]: Finished difference Result 1199 states and 1592 transitions. [2021-12-16 01:35:38,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:38,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:38,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:38,823 INFO L225 Difference]: With dead ends: 1199 [2021-12-16 01:35:38,823 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:38,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:38,824 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 2496 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:38,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2496 Valid, 2981 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:35:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3403225806451613) internal successors, (831), 641 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 831 transitions. [2021-12-16 01:35:38,872 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 831 transitions. Word has length 96 [2021-12-16 01:35:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:38,873 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 831 transitions. [2021-12-16 01:35:38,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 831 transitions. [2021-12-16 01:35:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 01:35:38,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:38,874 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] [2021-12-16 01:35:38,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-16 01:35:38,875 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:38,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1688520017, now seen corresponding path program 1 times [2021-12-16 01:35:38,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:38,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981641104] [2021-12-16 01:35:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:38,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:38,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:38,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981641104] [2021-12-16 01:35:38,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981641104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:38,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:38,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:38,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544738927] [2021-12-16 01:35:38,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:38,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:38,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:38,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:38,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:38,976 INFO L87 Difference]: Start difference. First operand 642 states and 831 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:40,271 INFO L93 Difference]: Finished difference Result 1198 states and 1589 transitions. [2021-12-16 01:35:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:40,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-16 01:35:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:40,274 INFO L225 Difference]: With dead ends: 1198 [2021-12-16 01:35:40,274 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:40,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:40,274 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 3617 mSDsluCounter, 2933 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3617 SdHoareTripleChecker+Valid, 3659 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:40,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3617 Valid, 3659 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:35:40,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:40,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3387096774193548) internal successors, (830), 641 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 830 transitions. [2021-12-16 01:35:40,323 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 830 transitions. Word has length 96 [2021-12-16 01:35:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:40,323 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 830 transitions. [2021-12-16 01:35:40,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 830 transitions. [2021-12-16 01:35:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:40,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:40,324 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] [2021-12-16 01:35:40,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-16 01:35:40,325 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:40,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1799558176, now seen corresponding path program 1 times [2021-12-16 01:35:40,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:40,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705802871] [2021-12-16 01:35:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:40,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:40,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:40,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705802871] [2021-12-16 01:35:40,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705802871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:40,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:40,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:40,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179644769] [2021-12-16 01:35:40,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:40,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:40,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:40,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:40,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:40,413 INFO L87 Difference]: Start difference. First operand 642 states and 830 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:41,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:41,450 INFO L93 Difference]: Finished difference Result 1164 states and 1531 transitions. [2021-12-16 01:35:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:41,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:41,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:41,452 INFO L225 Difference]: With dead ends: 1164 [2021-12-16 01:35:41,452 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:35:41,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:41,454 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 3749 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3749 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:41,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3749 Valid, 3024 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:35:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 642. [2021-12-16 01:35:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3370967741935484) internal successors, (829), 641 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 829 transitions. [2021-12-16 01:35:41,512 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 829 transitions. Word has length 98 [2021-12-16 01:35:41,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:41,513 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 829 transitions. [2021-12-16 01:35:41,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 829 transitions. [2021-12-16 01:35:41,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:41,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:41,514 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] [2021-12-16 01:35:41,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-16 01:35:41,514 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:41,515 INFO L85 PathProgramCache]: Analyzing trace with hash 112638926, now seen corresponding path program 1 times [2021-12-16 01:35:41,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:41,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890888185] [2021-12-16 01:35:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:41,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:41,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:41,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890888185] [2021-12-16 01:35:41,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890888185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:41,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:41,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:41,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824899359] [2021-12-16 01:35:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:41,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:41,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:41,605 INFO L87 Difference]: Start difference. First operand 642 states and 829 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:42,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:42,508 INFO L93 Difference]: Finished difference Result 1208 states and 1595 transitions. [2021-12-16 01:35:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:42,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:42,510 INFO L225 Difference]: With dead ends: 1208 [2021-12-16 01:35:42,523 INFO L226 Difference]: Without dead ends: 1116 [2021-12-16 01:35:42,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:42,525 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 3913 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:42,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3913 Valid, 2971 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:35:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-16 01:35:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-16 01:35:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.335483870967742) internal successors, (828), 641 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 828 transitions. [2021-12-16 01:35:42,613 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 828 transitions. Word has length 98 [2021-12-16 01:35:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:42,613 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 828 transitions. [2021-12-16 01:35:42,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 828 transitions. [2021-12-16 01:35:42,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:42,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:42,614 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] [2021-12-16 01:35:42,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-16 01:35:42,614 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:42,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1288712520, now seen corresponding path program 1 times [2021-12-16 01:35:42,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:42,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625503975] [2021-12-16 01:35:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:42,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:42,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:42,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625503975] [2021-12-16 01:35:42,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625503975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:42,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:42,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:42,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18096792] [2021-12-16 01:35:42,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:42,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:42,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:42,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:42,693 INFO L87 Difference]: Start difference. First operand 642 states and 828 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:43,728 INFO L93 Difference]: Finished difference Result 1161 states and 1526 transitions. [2021-12-16 01:35:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:43,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:43,731 INFO L225 Difference]: With dead ends: 1161 [2021-12-16 01:35:43,731 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:35:43,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:43,732 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 2870 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:43,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 3287 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:35:43,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 642. [2021-12-16 01:35:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3338709677419356) internal successors, (827), 641 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 827 transitions. [2021-12-16 01:35:43,784 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 827 transitions. Word has length 98 [2021-12-16 01:35:43,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:43,784 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 827 transitions. [2021-12-16 01:35:43,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 827 transitions. [2021-12-16 01:35:43,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:43,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:43,786 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] [2021-12-16 01:35:43,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-16 01:35:43,786 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1740272545, now seen corresponding path program 1 times [2021-12-16 01:35:43,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:43,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654377850] [2021-12-16 01:35:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:43,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:43,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:43,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654377850] [2021-12-16 01:35:43,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654377850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:43,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:43,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 01:35:43,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443075217] [2021-12-16 01:35:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:43,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 01:35:43,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 01:35:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 01:35:43,953 INFO L87 Difference]: Start difference. First operand 642 states and 827 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:45,769 INFO L93 Difference]: Finished difference Result 1545 states and 2073 transitions. [2021-12-16 01:35:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 01:35:45,769 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:45,771 INFO L225 Difference]: With dead ends: 1545 [2021-12-16 01:35:45,771 INFO L226 Difference]: Without dead ends: 1465 [2021-12-16 01:35:45,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-16 01:35:45,775 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 6892 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6892 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:45,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6892 Valid, 3315 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 01:35:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-12-16 01:35:45,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 646. [2021-12-16 01:35:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 624 states have (on average 1.3317307692307692) internal successors, (831), 645 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 831 transitions. [2021-12-16 01:35:45,861 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 831 transitions. Word has length 98 [2021-12-16 01:35:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:45,861 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 831 transitions. [2021-12-16 01:35:45,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 831 transitions. [2021-12-16 01:35:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:45,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:45,865 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] [2021-12-16 01:35:45,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-16 01:35:45,865 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:45,866 INFO L85 PathProgramCache]: Analyzing trace with hash -285632464, now seen corresponding path program 1 times [2021-12-16 01:35:45,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:45,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859399332] [2021-12-16 01:35:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:45,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:45,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859399332] [2021-12-16 01:35:45,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859399332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:45,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:45,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:45,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742875877] [2021-12-16 01:35:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:45,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:45,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:45,970 INFO L87 Difference]: Start difference. First operand 646 states and 831 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:46,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:46,988 INFO L93 Difference]: Finished difference Result 1251 states and 1651 transitions. [2021-12-16 01:35:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:46,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:46,990 INFO L225 Difference]: With dead ends: 1251 [2021-12-16 01:35:46,990 INFO L226 Difference]: Without dead ends: 1136 [2021-12-16 01:35:46,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:46,991 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 2900 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2900 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:46,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2900 Valid, 3390 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:46,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-12-16 01:35:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 646. [2021-12-16 01:35:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 624 states have (on average 1.330128205128205) internal successors, (830), 645 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 830 transitions. [2021-12-16 01:35:47,053 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 830 transitions. Word has length 98 [2021-12-16 01:35:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:47,053 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 830 transitions. [2021-12-16 01:35:47,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 830 transitions. [2021-12-16 01:35:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:47,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:47,054 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] [2021-12-16 01:35:47,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-16 01:35:47,054 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:47,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash 131410264, now seen corresponding path program 1 times [2021-12-16 01:35:47,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:47,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312027802] [2021-12-16 01:35:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:47,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:47,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:47,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312027802] [2021-12-16 01:35:47,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312027802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:47,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:47,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:47,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005011221] [2021-12-16 01:35:47,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:47,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:47,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:47,144 INFO L87 Difference]: Start difference. First operand 646 states and 830 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:48,116 INFO L93 Difference]: Finished difference Result 1164 states and 1526 transitions. [2021-12-16 01:35:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:48,118 INFO L225 Difference]: With dead ends: 1164 [2021-12-16 01:35:48,118 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:35:48,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:48,118 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 3717 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3717 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 2550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:48,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3717 Valid, 3060 Invalid, 2550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:35:48,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:35:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 646. [2021-12-16 01:35:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 624 states have (on average 1.328525641025641) internal successors, (829), 645 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 829 transitions. [2021-12-16 01:35:48,187 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 829 transitions. Word has length 98 [2021-12-16 01:35:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:48,187 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 829 transitions. [2021-12-16 01:35:48,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 829 transitions. [2021-12-16 01:35:48,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:48,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:48,196 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] [2021-12-16 01:35:48,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-16 01:35:48,197 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:48,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2043607366, now seen corresponding path program 1 times [2021-12-16 01:35:48,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:48,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722027102] [2021-12-16 01:35:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:48,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:48,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:48,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722027102] [2021-12-16 01:35:48,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722027102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:48,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:48,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:48,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514684869] [2021-12-16 01:35:48,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:48,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:48,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:48,361 INFO L87 Difference]: Start difference. First operand 646 states and 829 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:49,755 INFO L93 Difference]: Finished difference Result 1212 states and 1594 transitions. [2021-12-16 01:35:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:49,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:49,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:49,757 INFO L225 Difference]: With dead ends: 1212 [2021-12-16 01:35:49,757 INFO L226 Difference]: Without dead ends: 1120 [2021-12-16 01:35:49,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:49,759 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 3548 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:49,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3548 Valid, 3788 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 01:35:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-12-16 01:35:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 646. [2021-12-16 01:35:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 624 states have (on average 1.3269230769230769) internal successors, (828), 645 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 828 transitions. [2021-12-16 01:35:49,824 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 828 transitions. Word has length 98 [2021-12-16 01:35:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:49,824 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 828 transitions. [2021-12-16 01:35:49,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 828 transitions. [2021-12-16 01:35:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:49,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:49,826 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] [2021-12-16 01:35:49,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-16 01:35:49,826 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:49,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1144212400, now seen corresponding path program 1 times [2021-12-16 01:35:49,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:49,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554475237] [2021-12-16 01:35:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:49,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:49,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:49,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554475237] [2021-12-16 01:35:49,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554475237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:49,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:49,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:49,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447604711] [2021-12-16 01:35:49,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:49,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:49,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:49,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:49,927 INFO L87 Difference]: Start difference. First operand 646 states and 828 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:50,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:50,986 INFO L93 Difference]: Finished difference Result 1161 states and 1521 transitions. [2021-12-16 01:35:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:50,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:50,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:50,988 INFO L225 Difference]: With dead ends: 1161 [2021-12-16 01:35:50,988 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:35:50,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:50,989 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 3589 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3589 SdHoareTripleChecker+Valid, 3334 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:50,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3589 Valid, 3334 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:35:51,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 646. [2021-12-16 01:35:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 624 states have (on average 1.3253205128205128) internal successors, (827), 645 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 827 transitions. [2021-12-16 01:35:51,056 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 827 transitions. Word has length 98 [2021-12-16 01:35:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:51,056 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 827 transitions. [2021-12-16 01:35:51,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 827 transitions. [2021-12-16 01:35:51,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:51,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:51,058 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] [2021-12-16 01:35:51,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-16 01:35:51,058 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:51,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:51,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1885152984, now seen corresponding path program 1 times [2021-12-16 01:35:51,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:51,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464493434] [2021-12-16 01:35:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:51,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:51,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:51,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464493434] [2021-12-16 01:35:51,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464493434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:51,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:51,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:51,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907575849] [2021-12-16 01:35:51,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:51,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:51,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:51,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:51,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:51,147 INFO L87 Difference]: Start difference. First operand 646 states and 827 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:52,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:52,240 INFO L93 Difference]: Finished difference Result 1089 states and 1412 transitions. [2021-12-16 01:35:52,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:52,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:52,243 INFO L225 Difference]: With dead ends: 1089 [2021-12-16 01:35:52,243 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:35:52,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:52,243 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 2729 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:52,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2729 Valid, 3513 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:35:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:35:52,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 646. [2021-12-16 01:35:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 624 states have (on average 1.3237179487179487) internal successors, (826), 645 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 826 transitions. [2021-12-16 01:35:52,308 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 826 transitions. Word has length 98 [2021-12-16 01:35:52,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:52,308 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 826 transitions. [2021-12-16 01:35:52,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 826 transitions. [2021-12-16 01:35:52,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:52,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:52,309 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] [2021-12-16 01:35:52,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-16 01:35:52,309 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:52,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash -495518324, now seen corresponding path program 1 times [2021-12-16 01:35:52,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:52,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510493450] [2021-12-16 01:35:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:52,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:52,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:52,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510493450] [2021-12-16 01:35:52,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510493450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:52,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:52,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 01:35:52,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675888449] [2021-12-16 01:35:52,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:52,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 01:35:52,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 01:35:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 01:35:52,455 INFO L87 Difference]: Start difference. First operand 646 states and 826 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:54,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:54,499 INFO L93 Difference]: Finished difference Result 1539 states and 2060 transitions. [2021-12-16 01:35:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 01:35:54,499 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:54,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:54,502 INFO L225 Difference]: With dead ends: 1539 [2021-12-16 01:35:54,502 INFO L226 Difference]: Without dead ends: 1462 [2021-12-16 01:35:54,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-16 01:35:54,503 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 5728 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5728 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:54,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5728 Valid, 2921 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 01:35:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-12-16 01:35:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 650. [2021-12-16 01:35:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 628 states have (on average 1.321656050955414) internal successors, (830), 649 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 830 transitions. [2021-12-16 01:35:54,592 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 830 transitions. Word has length 98 [2021-12-16 01:35:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:54,593 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 830 transitions. [2021-12-16 01:35:54,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 830 transitions. [2021-12-16 01:35:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:54,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:54,594 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] [2021-12-16 01:35:54,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-16 01:35:54,595 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2030828310, now seen corresponding path program 1 times [2021-12-16 01:35:54,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:54,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430335879] [2021-12-16 01:35:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:54,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:54,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:54,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430335879] [2021-12-16 01:35:54,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430335879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:54,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:54,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:54,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728460978] [2021-12-16 01:35:54,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:54,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:54,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:54,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:54,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:54,690 INFO L87 Difference]: Start difference. First operand 650 states and 830 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:55,602 INFO L93 Difference]: Finished difference Result 1159 states and 1515 transitions. [2021-12-16 01:35:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:55,604 INFO L225 Difference]: With dead ends: 1159 [2021-12-16 01:35:55,604 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:35:55,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:55,605 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 2967 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:55,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2967 Valid, 2832 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:35:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:35:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 650. [2021-12-16 01:35:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 628 states have (on average 1.320063694267516) internal successors, (829), 649 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 829 transitions. [2021-12-16 01:35:55,692 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 829 transitions. Word has length 98 [2021-12-16 01:35:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:55,693 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 829 transitions. [2021-12-16 01:35:55,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 829 transitions. [2021-12-16 01:35:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:55,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:55,694 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] [2021-12-16 01:35:55,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-16 01:35:55,694 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:55,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1081413880, now seen corresponding path program 1 times [2021-12-16 01:35:55,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:55,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525506689] [2021-12-16 01:35:55,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:55,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:55,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:55,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525506689] [2021-12-16 01:35:55,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525506689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:55,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:55,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:55,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623754099] [2021-12-16 01:35:55,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:55,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:55,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:55,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:55,790 INFO L87 Difference]: Start difference. First operand 650 states and 829 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:56,652 INFO L93 Difference]: Finished difference Result 1089 states and 1408 transitions. [2021-12-16 01:35:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:56,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:56,655 INFO L225 Difference]: With dead ends: 1089 [2021-12-16 01:35:56,655 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:35:56,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:56,656 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 2930 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2930 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:56,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2930 Valid, 3118 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:35:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:35:56,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 650. [2021-12-16 01:35:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 628 states have (on average 1.3184713375796178) internal successors, (828), 649 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 828 transitions. [2021-12-16 01:35:56,744 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 828 transitions. Word has length 98 [2021-12-16 01:35:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:56,744 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 828 transitions. [2021-12-16 01:35:56,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 828 transitions. [2021-12-16 01:35:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:56,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:56,746 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] [2021-12-16 01:35:56,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-16 01:35:56,746 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1301356314, now seen corresponding path program 1 times [2021-12-16 01:35:56,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:56,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031822772] [2021-12-16 01:35:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:56,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:56,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:56,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031822772] [2021-12-16 01:35:56,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031822772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:56,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:56,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:56,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321422750] [2021-12-16 01:35:56,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:56,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:56,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:56,817 INFO L87 Difference]: Start difference. First operand 650 states and 828 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:57,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:57,671 INFO L93 Difference]: Finished difference Result 1141 states and 1479 transitions. [2021-12-16 01:35:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:57,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:57,688 INFO L225 Difference]: With dead ends: 1141 [2021-12-16 01:35:57,688 INFO L226 Difference]: Without dead ends: 1124 [2021-12-16 01:35:57,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:57,690 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 1963 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:57,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 3099 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:35:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-12-16 01:35:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 650. [2021-12-16 01:35:57,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 628 states have (on average 1.3168789808917198) internal successors, (827), 649 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 827 transitions. [2021-12-16 01:35:57,788 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 827 transitions. Word has length 98 [2021-12-16 01:35:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:57,788 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 827 transitions. [2021-12-16 01:35:57,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 827 transitions. [2021-12-16 01:35:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:57,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:57,790 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] [2021-12-16 01:35:57,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-16 01:35:57,790 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1591996391, now seen corresponding path program 1 times [2021-12-16 01:35:57,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:57,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562685363] [2021-12-16 01:35:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:57,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:57,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:57,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562685363] [2021-12-16 01:35:57,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562685363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:57,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:57,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:35:57,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718819778] [2021-12-16 01:35:57,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:57,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:35:57,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:57,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:35:57,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:35:57,869 INFO L87 Difference]: Start difference. First operand 650 states and 827 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:35:58,787 INFO L93 Difference]: Finished difference Result 1161 states and 1514 transitions. [2021-12-16 01:35:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:35:58,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:35:58,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:35:58,789 INFO L225 Difference]: With dead ends: 1161 [2021-12-16 01:35:58,789 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:35:58,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:35:58,790 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 3649 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3649 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:35:58,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3649 Valid, 2593 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:35:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:35:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 650. [2021-12-16 01:35:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 628 states have (on average 1.3152866242038217) internal successors, (826), 649 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 826 transitions. [2021-12-16 01:35:58,858 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 826 transitions. Word has length 98 [2021-12-16 01:35:58,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:35:58,859 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 826 transitions. [2021-12-16 01:35:58,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:35:58,859 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 826 transitions. [2021-12-16 01:35:58,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:35:58,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:35:58,860 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] [2021-12-16 01:35:58,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-16 01:35:58,860 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:35:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:35:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash 326277305, now seen corresponding path program 1 times [2021-12-16 01:35:58,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:35:58,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474774396] [2021-12-16 01:35:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:35:58,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:35:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:35:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:35:58,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:35:58,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474774396] [2021-12-16 01:35:58,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474774396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:35:58,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:35:58,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 01:35:58,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797213881] [2021-12-16 01:35:58,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:35:59,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 01:35:59,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:35:59,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 01:35:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 01:35:59,000 INFO L87 Difference]: Start difference. First operand 650 states and 826 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:01,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:01,030 INFO L93 Difference]: Finished difference Result 1470 states and 1949 transitions. [2021-12-16 01:36:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 01:36:01,030 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:36:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:01,033 INFO L225 Difference]: With dead ends: 1470 [2021-12-16 01:36:01,033 INFO L226 Difference]: Without dead ends: 1465 [2021-12-16 01:36:01,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-16 01:36:01,034 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 5631 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5631 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:01,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5631 Valid, 2958 Invalid, 3087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [761 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 01:36:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-12-16 01:36:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 654. [2021-12-16 01:36:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 632 states have (on average 1.3132911392405062) internal successors, (830), 653 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 830 transitions. [2021-12-16 01:36:01,128 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 830 transitions. Word has length 98 [2021-12-16 01:36:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:01,128 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 830 transitions. [2021-12-16 01:36:01,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 830 transitions. [2021-12-16 01:36:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:36:01,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:01,130 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] [2021-12-16 01:36:01,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-16 01:36:01,130 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:36:01,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1596017491, now seen corresponding path program 1 times [2021-12-16 01:36:01,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:01,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590826202] [2021-12-16 01:36:01,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:01,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:01,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:01,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590826202] [2021-12-16 01:36:01,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590826202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:01,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:01,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:36:01,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512263766] [2021-12-16 01:36:01,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:01,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:01,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:01,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:01,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:01,221 INFO L87 Difference]: Start difference. First operand 654 states and 830 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:02,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:02,196 INFO L93 Difference]: Finished difference Result 1164 states and 1515 transitions. [2021-12-16 01:36:02,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:36:02,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:36:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:02,199 INFO L225 Difference]: With dead ends: 1164 [2021-12-16 01:36:02,199 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:36:02,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:36:02,200 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 2907 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2907 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:02,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2907 Valid, 2862 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:36:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:36:02,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 654. [2021-12-16 01:36:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 632 states have (on average 1.3117088607594938) internal successors, (829), 653 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 829 transitions. [2021-12-16 01:36:02,275 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 829 transitions. Word has length 98 [2021-12-16 01:36:02,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:02,276 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 829 transitions. [2021-12-16 01:36:02,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:02,276 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 829 transitions. [2021-12-16 01:36:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:36:02,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:02,277 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] [2021-12-16 01:36:02,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-16 01:36:02,277 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:36:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:02,278 INFO L85 PathProgramCache]: Analyzing trace with hash 316179611, now seen corresponding path program 1 times [2021-12-16 01:36:02,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:02,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101141438] [2021-12-16 01:36:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:02,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:02,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:02,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101141438] [2021-12-16 01:36:02,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101141438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:02,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:02,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:36:02,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692810571] [2021-12-16 01:36:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:02,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:02,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:02,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:02,374 INFO L87 Difference]: Start difference. First operand 654 states and 829 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:03,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:03,359 INFO L93 Difference]: Finished difference Result 1220 states and 1589 transitions. [2021-12-16 01:36:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:36:03,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:36:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:03,362 INFO L225 Difference]: With dead ends: 1220 [2021-12-16 01:36:03,362 INFO L226 Difference]: Without dead ends: 1128 [2021-12-16 01:36:03,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:36:03,363 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 3725 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3725 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:03,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3725 Valid, 3095 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:36:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-12-16 01:36:03,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 654. [2021-12-16 01:36:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 632 states have (on average 1.3101265822784811) internal successors, (828), 653 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 828 transitions. [2021-12-16 01:36:03,458 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 828 transitions. Word has length 98 [2021-12-16 01:36:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:03,458 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 828 transitions. [2021-12-16 01:36:03,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:03,459 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 828 transitions. [2021-12-16 01:36:03,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:36:03,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:03,475 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] [2021-12-16 01:36:03,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-16 01:36:03,476 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:36:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1085915592, now seen corresponding path program 1 times [2021-12-16 01:36:03,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:03,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172154589] [2021-12-16 01:36:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:03,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:03,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:03,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172154589] [2021-12-16 01:36:03,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172154589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:03,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:03,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:36:03,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745809840] [2021-12-16 01:36:03,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:03,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:03,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:03,577 INFO L87 Difference]: Start difference. First operand 654 states and 828 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:04,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:04,661 INFO L93 Difference]: Finished difference Result 1161 states and 1510 transitions. [2021-12-16 01:36:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:36:04,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-16 01:36:04,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:04,663 INFO L225 Difference]: With dead ends: 1161 [2021-12-16 01:36:04,663 INFO L226 Difference]: Without dead ends: 1084 [2021-12-16 01:36:04,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:36:04,664 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 3528 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:04,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3528 Valid, 3398 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:36:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-16 01:36:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 654. [2021-12-16 01:36:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 632 states have (on average 1.3085443037974684) internal successors, (827), 653 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 827 transitions. [2021-12-16 01:36:04,744 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 827 transitions. Word has length 98 [2021-12-16 01:36:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:04,745 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 827 transitions. [2021-12-16 01:36:04,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:04,745 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 827 transitions. [2021-12-16 01:36:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 01:36:04,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:04,746 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] [2021-12-16 01:36:04,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-16 01:36:04,746 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-16 01:36:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1943813230, now seen corresponding path program 1 times [2021-12-16 01:36:04,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:04,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348785689] [2021-12-16 01:36:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:04,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:04,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:04,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348785689] [2021-12-16 01:36:04,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348785689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:04,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:04,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 01:36:04,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466048335] [2021-12-16 01:36:04,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:04,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 01:36:04,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:04,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 01:36:04,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 01:36:04,888 INFO L87 Difference]: Start difference. First operand 654 states and 827 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)