./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 820426658db97058309ccbf6c9080e1e23ba9878004c38e814dfcfedaf40875a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:45:42,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:45:42,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:45:42,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:45:42,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:45:42,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:45:42,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:45:42,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:45:42,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:45:42,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:45:42,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:45:42,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:45:42,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:45:42,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:45:42,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:45:42,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:45:42,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:45:42,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:45:42,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:45:42,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:45:42,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:45:42,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:45:42,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:45:42,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:45:42,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:45:42,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:45:42,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:45:42,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:45:42,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:45:42,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:45:42,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:45:42,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:45:42,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:45:42,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:45:42,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:45:42,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:45:42,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:45:42,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:45:42,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:45:42,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:45:42,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:45:42,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:45:42,367 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:45:42,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:45:42,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:45:42,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:45:42,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:45:42,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:45:42,370 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:45:42,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:45:42,370 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:45:42,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:45:42,372 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:45:42,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:45:42,372 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:45:42,372 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:45:42,373 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:45:42,373 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:45:42,373 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:45:42,373 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:45:42,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:45:42,374 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:45:42,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:45:42,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:45:42,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:45:42,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:45:42,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:45:42,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:45:42,377 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:45:42,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:45:42,377 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:45:42,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:45:42,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:45:42,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:45:42,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:45:42,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:45:42,379 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:45:42,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:45:42,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:45:42,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:45:42,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:45:42,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:45:42,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:45:42,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 820426658db97058309ccbf6c9080e1e23ba9878004c38e814dfcfedaf40875a [2022-11-25 23:45:42,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:45:42,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:45:42,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:45:42,724 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:45:42,725 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:45:42,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-25 23:45:45,788 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:45:46,248 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:45:46,249 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-25 23:45:46,278 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/data/cb93b38c9/7ed5a8b05ba44efbbe0ebb31934beb44/FLAGda34b6463 [2022-11-25 23:45:46,298 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/data/cb93b38c9/7ed5a8b05ba44efbbe0ebb31934beb44 [2022-11-25 23:45:46,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:45:46,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:45:46,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:45:46,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:45:46,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:45:46,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:45:46" (1/1) ... [2022-11-25 23:45:46,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ebd4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:46, skipping insertion in model container [2022-11-25 23:45:46,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:45:46" (1/1) ... [2022-11-25 23:45:46,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:45:46,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:45:46,924 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11898,11911] [2022-11-25 23:45:47,006 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18616,18629] [2022-11-25 23:45:47,028 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20814,20827] [2022-11-25 23:45:47,057 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21891,21904] [2022-11-25 23:45:47,091 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25244,25257] [2022-11-25 23:45:47,097 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26324,26337] [2022-11-25 23:45:47,109 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28553,28566] [2022-11-25 23:45:47,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:45:47,562 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:45:47,614 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11898,11911] [2022-11-25 23:45:47,637 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18616,18629] [2022-11-25 23:45:47,645 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20814,20827] [2022-11-25 23:45:47,650 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21891,21904] [2022-11-25 23:45:47,660 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25244,25257] [2022-11-25 23:45:47,664 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26324,26337] [2022-11-25 23:45:47,672 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28553,28566] [2022-11-25 23:45:47,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:45:47,999 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:45:48,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48 WrapperNode [2022-11-25 23:45:48,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:45:48,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:45:48,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:45:48,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:45:48,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,143 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6525 [2022-11-25 23:45:48,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:45:48,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:45:48,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:45:48,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:45:48,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:45:48,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:45:48,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:45:48,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:45:48,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (1/1) ... [2022-11-25 23:45:48,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:45:48,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:45:48,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:45:48,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236a70f0-9e28-4fde-8ec1-524529611c54/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:45:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:45:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:45:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:45:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:45:48,905 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:45:48,908 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:45:52,054 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:45:52,395 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:45:52,396 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:45:52,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:45:52 BoogieIcfgContainer [2022-11-25 23:45:52,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:45:52,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:45:52,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:45:52,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:45:52,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:45:46" (1/3) ... [2022-11-25 23:45:52,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75811707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:45:52, skipping insertion in model container [2022-11-25 23:45:52,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:48" (2/3) ... [2022-11-25 23:45:52,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75811707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:45:52, skipping insertion in model container [2022-11-25 23:45:52,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:45:52" (3/3) ... [2022-11-25 23:45:52,412 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-25 23:45:52,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:45:52,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-25 23:45:52,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:45:52,513 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e694d86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:45:52,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-25 23:45:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 1054 states, 1046 states have (on average 1.8948374760994264) internal successors, (1982), 1053 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 23:45:52,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:52,545 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:45:52,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:45:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:52,551 INFO L85 PathProgramCache]: Analyzing trace with hash -966255617, now seen corresponding path program 1 times [2022-11-25 23:45:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:52,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892646605] [2022-11-25 23:45:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:52,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:53,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:53,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892646605] [2022-11-25 23:45:53,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892646605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:53,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:53,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:45:53,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318650006] [2022-11-25 23:45:53,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:53,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:45:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:45:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:45:53,368 INFO L87 Difference]: Start difference. First operand has 1054 states, 1046 states have (on average 1.8948374760994264) internal successors, (1982), 1053 states have internal predecessors, (1982), 0 states have call successors, (0), 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 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:54,483 INFO L93 Difference]: Finished difference Result 1560 states and 2852 transitions. [2022-11-25 23:45:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:45:54,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 23:45:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:54,511 INFO L225 Difference]: With dead ends: 1560 [2022-11-25 23:45:54,515 INFO L226 Difference]: Without dead ends: 985 [2022-11-25 23:45:54,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:45:54,529 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 5029 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:54,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 1240 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:45:54,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-11-25 23:45:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 977. [2022-11-25 23:45:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 970 states have (on average 1.288659793814433) internal successors, (1250), 976 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1250 transitions. [2022-11-25 23:45:54,653 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1250 transitions. Word has length 62 [2022-11-25 23:45:54,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:54,653 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1250 transitions. [2022-11-25 23:45:54,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1250 transitions. [2022-11-25 23:45:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 23:45:54,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:54,656 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:45:54,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:45:54,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:45:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1187989298, now seen corresponding path program 1 times [2022-11-25 23:45:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:54,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304839289] [2022-11-25 23:45:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:54,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:54,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:54,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304839289] [2022-11-25 23:45:54,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304839289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:54,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:54,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:45:54,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511517477] [2022-11-25 23:45:54,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:54,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:45:54,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:54,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:45:54,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:45:54,834 INFO L87 Difference]: Start difference. First operand 977 states and 1250 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:55,069 INFO L93 Difference]: Finished difference Result 1420 states and 1870 transitions. [2022-11-25 23:45:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:45:55,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 23:45:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:55,081 INFO L225 Difference]: With dead ends: 1420 [2022-11-25 23:45:55,082 INFO L226 Difference]: Without dead ends: 1207 [2022-11-25 23:45:55,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:45:55,085 INFO L413 NwaCegarLoop]: 1080 mSDtfsCounter, 524 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:55,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1765 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:45:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-11-25 23:45:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1199. [2022-11-25 23:45:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1192 states have (on average 1.308724832214765) internal successors, (1560), 1198 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1560 transitions. [2022-11-25 23:45:55,167 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1560 transitions. Word has length 62 [2022-11-25 23:45:55,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:55,168 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 1560 transitions. [2022-11-25 23:45:55,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:55,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1560 transitions. [2022-11-25 23:45:55,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 23:45:55,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:55,171 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:45:55,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:45:55,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:45:55,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash -369366517, now seen corresponding path program 1 times [2022-11-25 23:45:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:55,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783601720] [2022-11-25 23:45:55,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:55,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:55,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:55,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783601720] [2022-11-25 23:45:55,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783601720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:55,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:55,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:45:55,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483298267] [2022-11-25 23:45:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:55,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:45:55,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:45:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:45:55,353 INFO L87 Difference]: Start difference. First operand 1199 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:55,542 INFO L93 Difference]: Finished difference Result 1898 states and 2558 transitions. [2022-11-25 23:45:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:45:55,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 23:45:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:55,550 INFO L225 Difference]: With dead ends: 1898 [2022-11-25 23:45:55,550 INFO L226 Difference]: Without dead ends: 1524 [2022-11-25 23:45:55,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:45:55,554 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 659 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:55,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1661 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:45:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-11-25 23:45:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1516. [2022-11-25 23:45:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1509 states have (on average 1.333996023856859) internal successors, (2013), 1515 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2013 transitions. [2022-11-25 23:45:55,651 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2013 transitions. Word has length 62 [2022-11-25 23:45:55,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:55,652 INFO L495 AbstractCegarLoop]: Abstraction has 1516 states and 2013 transitions. [2022-11-25 23:45:55,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:55,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2013 transitions. [2022-11-25 23:45:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 23:45:55,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:55,655 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:45:55,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:45:55,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:45:55,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:55,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1656441469, now seen corresponding path program 1 times [2022-11-25 23:45:55,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:55,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601852157] [2022-11-25 23:45:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:55,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:55,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:55,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601852157] [2022-11-25 23:45:55,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601852157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:55,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:55,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:45:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122487556] [2022-11-25 23:45:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:55,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:45:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:45:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:45:55,855 INFO L87 Difference]: Start difference. First operand 1516 states and 2013 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:56,616 INFO L93 Difference]: Finished difference Result 3179 states and 4335 transitions. [2022-11-25 23:45:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:45:56,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 23:45:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:56,624 INFO L225 Difference]: With dead ends: 3179 [2022-11-25 23:45:56,624 INFO L226 Difference]: Without dead ends: 1910 [2022-11-25 23:45:56,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:45:56,627 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 2719 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:56,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 654 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:45:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2022-11-25 23:45:56,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1902. [2022-11-25 23:45:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1895 states have (on average 1.370448548812665) internal successors, (2597), 1901 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2597 transitions. [2022-11-25 23:45:56,818 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2597 transitions. Word has length 62 [2022-11-25 23:45:56,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:56,818 INFO L495 AbstractCegarLoop]: Abstraction has 1902 states and 2597 transitions. [2022-11-25 23:45:56,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2597 transitions. [2022-11-25 23:45:56,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:45:56,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:56,822 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:45:56,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:45:56,823 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:45:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1951931054, now seen corresponding path program 1 times [2022-11-25 23:45:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:56,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920380718] [2022-11-25 23:45:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:56,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:56,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920380718] [2022-11-25 23:45:56,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920380718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:56,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:56,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:45:56,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502154800] [2022-11-25 23:45:56,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:56,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:45:56,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:56,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:45:56,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:45:56,987 INFO L87 Difference]: Start difference. First operand 1902 states and 2597 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:57,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:57,365 INFO L93 Difference]: Finished difference Result 4157 states and 5775 transitions. [2022-11-25 23:45:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:45:57,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-25 23:45:57,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:57,381 INFO L225 Difference]: With dead ends: 4157 [2022-11-25 23:45:57,381 INFO L226 Difference]: Without dead ends: 2967 [2022-11-25 23:45:57,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:45:57,388 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 692 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:57,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1637 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:45:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2022-11-25 23:45:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2959. [2022-11-25 23:45:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2952 states have (on average 1.3719512195121952) internal successors, (4050), 2958 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4050 transitions. [2022-11-25 23:45:57,754 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4050 transitions. Word has length 63 [2022-11-25 23:45:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:57,754 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4050 transitions. [2022-11-25 23:45:57,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:57,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4050 transitions. [2022-11-25 23:45:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:45:57,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:57,758 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:45:57,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:45:57,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:45:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash 55124087, now seen corresponding path program 1 times [2022-11-25 23:45:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:57,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339206604] [2022-11-25 23:45:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:57,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:57,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:57,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339206604] [2022-11-25 23:45:57,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339206604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:57,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:57,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:45:57,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319560720] [2022-11-25 23:45:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:57,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:45:57,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:45:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:45:57,950 INFO L87 Difference]: Start difference. First operand 2959 states and 4050 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:59,037 INFO L93 Difference]: Finished difference Result 6804 states and 9457 transitions. [2022-11-25 23:45:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:45:59,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-25 23:45:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:59,053 INFO L225 Difference]: With dead ends: 6804 [2022-11-25 23:45:59,053 INFO L226 Difference]: Without dead ends: 4331 [2022-11-25 23:45:59,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:45:59,063 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 2376 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:59,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 517 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:45:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2022-11-25 23:45:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 4323. [2022-11-25 23:45:59,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4316 states have (on average 1.3769694161260426) internal successors, (5943), 4322 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 5943 transitions. [2022-11-25 23:45:59,536 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 5943 transitions. Word has length 63 [2022-11-25 23:45:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:59,536 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 5943 transitions. [2022-11-25 23:45:59,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:59,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 5943 transitions. [2022-11-25 23:45:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 23:45:59,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:59,541 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:45:59,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:45:59,541 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:45:59,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1411626804, now seen corresponding path program 1 times [2022-11-25 23:45:59,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:59,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901567745] [2022-11-25 23:45:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:59,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:59,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:59,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901567745] [2022-11-25 23:45:59,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901567745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:59,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:59,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:45:59,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755473046] [2022-11-25 23:45:59,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:59,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:45:59,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:45:59,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:45:59,718 INFO L87 Difference]: Start difference. First operand 4323 states and 5943 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:01,011 INFO L93 Difference]: Finished difference Result 11380 states and 15867 transitions. [2022-11-25 23:46:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:46:01,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-25 23:46:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:01,041 INFO L225 Difference]: With dead ends: 11380 [2022-11-25 23:46:01,041 INFO L226 Difference]: Without dead ends: 7294 [2022-11-25 23:46:01,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:46:01,048 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2038 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:01,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 501 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:46:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2022-11-25 23:46:01,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 7286. [2022-11-25 23:46:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7286 states, 7279 states have (on average 1.3821953565050145) internal successors, (10061), 7285 states have internal predecessors, (10061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7286 states to 7286 states and 10061 transitions. [2022-11-25 23:46:01,884 INFO L78 Accepts]: Start accepts. Automaton has 7286 states and 10061 transitions. Word has length 64 [2022-11-25 23:46:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:01,885 INFO L495 AbstractCegarLoop]: Abstraction has 7286 states and 10061 transitions. [2022-11-25 23:46:01,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:01,885 INFO L276 IsEmpty]: Start isEmpty. Operand 7286 states and 10061 transitions. [2022-11-25 23:46:01,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 23:46:01,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:01,890 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:46:01,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:46:01,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:46:01,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:01,891 INFO L85 PathProgramCache]: Analyzing trace with hash 257868933, now seen corresponding path program 1 times [2022-11-25 23:46:01,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:01,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862363055] [2022-11-25 23:46:01,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:01,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:01,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:01,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862363055] [2022-11-25 23:46:01,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862363055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:01,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:01,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:46:01,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191706724] [2022-11-25 23:46:01,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:01,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:46:01,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:01,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:46:01,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:01,969 INFO L87 Difference]: Start difference. First operand 7286 states and 10061 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:03,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:03,296 INFO L93 Difference]: Finished difference Result 18503 states and 25745 transitions. [2022-11-25 23:46:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:46:03,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-25 23:46:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:03,338 INFO L225 Difference]: With dead ends: 18503 [2022-11-25 23:46:03,338 INFO L226 Difference]: Without dead ends: 12230 [2022-11-25 23:46:03,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:03,350 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 451 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:03,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1173 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:46:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12230 states. [2022-11-25 23:46:04,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12230 to 12222. [2022-11-25 23:46:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12222 states, 12215 states have (on average 1.3742120343839541) internal successors, (16786), 12221 states have internal predecessors, (16786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12222 states to 12222 states and 16786 transitions. [2022-11-25 23:46:04,994 INFO L78 Accepts]: Start accepts. Automaton has 12222 states and 16786 transitions. Word has length 65 [2022-11-25 23:46:04,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:04,994 INFO L495 AbstractCegarLoop]: Abstraction has 12222 states and 16786 transitions. [2022-11-25 23:46:04,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:04,995 INFO L276 IsEmpty]: Start isEmpty. Operand 12222 states and 16786 transitions. [2022-11-25 23:46:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 23:46:05,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:05,004 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:46:05,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:46:05,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:46:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash 868506865, now seen corresponding path program 1 times [2022-11-25 23:46:05,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:05,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852193520] [2022-11-25 23:46:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:05,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:05,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:05,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852193520] [2022-11-25 23:46:05,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852193520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:05,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:05,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:46:05,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205892862] [2022-11-25 23:46:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:05,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:46:05,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:46:05,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:46:05,260 INFO L87 Difference]: Start difference. First operand 12222 states and 16786 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:11,047 INFO L93 Difference]: Finished difference Result 46461 states and 64177 transitions. [2022-11-25 23:46:11,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:46:11,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-25 23:46:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:11,159 INFO L225 Difference]: With dead ends: 46461 [2022-11-25 23:46:11,160 INFO L226 Difference]: Without dead ends: 41172 [2022-11-25 23:46:11,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:46:11,176 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 3703 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:11,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3703 Valid, 886 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:46:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41172 states. [2022-11-25 23:46:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41172 to 12250. [2022-11-25 23:46:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12250 states, 12243 states have (on average 1.3740096381605815) internal successors, (16822), 12249 states have internal predecessors, (16822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12250 states to 12250 states and 16822 transitions. [2022-11-25 23:46:13,165 INFO L78 Accepts]: Start accepts. Automaton has 12250 states and 16822 transitions. Word has length 66 [2022-11-25 23:46:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:13,166 INFO L495 AbstractCegarLoop]: Abstraction has 12250 states and 16822 transitions. [2022-11-25 23:46:13,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 12250 states and 16822 transitions. [2022-11-25 23:46:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 23:46:13,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:13,173 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:46:13,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:46:13,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:46:13,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:13,175 INFO L85 PathProgramCache]: Analyzing trace with hash -115804627, now seen corresponding path program 1 times [2022-11-25 23:46:13,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:13,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045382613] [2022-11-25 23:46:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:13,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:13,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045382613] [2022-11-25 23:46:13,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045382613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:13,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:13,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:46:13,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414241908] [2022-11-25 23:46:13,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:13,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:46:13,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:13,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:46:13,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:46:13,371 INFO L87 Difference]: Start difference. First operand 12250 states and 16822 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:22,523 INFO L93 Difference]: Finished difference Result 51218 states and 71028 transitions. [2022-11-25 23:46:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:46:22,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-25 23:46:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:22,632 INFO L225 Difference]: With dead ends: 51218 [2022-11-25 23:46:22,633 INFO L226 Difference]: Without dead ends: 46372 [2022-11-25 23:46:22,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:46:22,650 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 2843 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:22,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2843 Valid, 1002 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:46:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46372 states. [2022-11-25 23:46:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46372 to 12321. [2022-11-25 23:46:25,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12321 states, 12314 states have (on average 1.3741270099074225) internal successors, (16921), 12320 states have internal predecessors, (16921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12321 states to 12321 states and 16921 transitions. [2022-11-25 23:46:25,679 INFO L78 Accepts]: Start accepts. Automaton has 12321 states and 16921 transitions. Word has length 66 [2022-11-25 23:46:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:25,679 INFO L495 AbstractCegarLoop]: Abstraction has 12321 states and 16921 transitions. [2022-11-25 23:46:25,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 12321 states and 16921 transitions. [2022-11-25 23:46:25,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 23:46:25,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:25,687 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:46:25,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:46:25,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:46:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash 31518793, now seen corresponding path program 1 times [2022-11-25 23:46:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:25,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568673441] [2022-11-25 23:46:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:25,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:25,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568673441] [2022-11-25 23:46:25,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568673441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:25,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:25,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:46:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085622414] [2022-11-25 23:46:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:25,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:46:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:46:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:46:25,895 INFO L87 Difference]: Start difference. First operand 12321 states and 16921 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:39,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:39,661 INFO L93 Difference]: Finished difference Result 65515 states and 91149 transitions. [2022-11-25 23:46:39,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:46:39,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-25 23:46:39,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:39,799 INFO L225 Difference]: With dead ends: 65515 [2022-11-25 23:46:39,799 INFO L226 Difference]: Without dead ends: 60231 [2022-11-25 23:46:39,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:46:39,821 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 4085 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:39,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 934 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:46:39,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60231 states. [2022-11-25 23:46:42,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60231 to 12389. [2022-11-25 23:46:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12389 states, 12382 states have (on average 1.3736876110482958) internal successors, (17009), 12388 states have internal predecessors, (17009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12389 states to 12389 states and 17009 transitions. [2022-11-25 23:46:42,993 INFO L78 Accepts]: Start accepts. Automaton has 12389 states and 17009 transitions. Word has length 66 [2022-11-25 23:46:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:42,994 INFO L495 AbstractCegarLoop]: Abstraction has 12389 states and 17009 transitions. [2022-11-25 23:46:42,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 12389 states and 17009 transitions. [2022-11-25 23:46:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 23:46:43,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:43,002 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:46:43,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:46:43,003 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:46:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1680186821, now seen corresponding path program 1 times [2022-11-25 23:46:43,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:43,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809447093] [2022-11-25 23:46:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:43,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:43,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809447093] [2022-11-25 23:46:43,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809447093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:43,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:43,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:46:43,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512123126] [2022-11-25 23:46:43,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:43,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:46:43,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:43,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:46:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:46:43,159 INFO L87 Difference]: Start difference. First operand 12389 states and 17009 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:57,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:57,317 INFO L93 Difference]: Finished difference Result 58627 states and 81415 transitions. [2022-11-25 23:46:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:46:57,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-25 23:46:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:57,429 INFO L225 Difference]: With dead ends: 58627 [2022-11-25 23:46:57,429 INFO L226 Difference]: Without dead ends: 53517 [2022-11-25 23:46:57,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:46:57,451 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 3748 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3748 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:57,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3748 Valid, 923 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:46:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53517 states. [2022-11-25 23:47:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53517 to 12518. [2022-11-25 23:47:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12518 states, 12511 states have (on average 1.3731915913995685) internal successors, (17180), 12517 states have internal predecessors, (17180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12518 states to 12518 states and 17180 transitions. [2022-11-25 23:47:00,686 INFO L78 Accepts]: Start accepts. Automaton has 12518 states and 17180 transitions. Word has length 66 [2022-11-25 23:47:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:00,686 INFO L495 AbstractCegarLoop]: Abstraction has 12518 states and 17180 transitions. [2022-11-25 23:47:00,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 12518 states and 17180 transitions. [2022-11-25 23:47:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 23:47:00,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:00,695 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:47:00,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:47:00,696 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:47:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1923868673, now seen corresponding path program 1 times [2022-11-25 23:47:00,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:00,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428913123] [2022-11-25 23:47:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:01,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:01,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428913123] [2022-11-25 23:47:01,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428913123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:01,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:01,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:47:01,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459173635] [2022-11-25 23:47:01,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:01,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:47:01,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:01,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:47:01,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:47:01,083 INFO L87 Difference]: Start difference. First operand 12518 states and 17180 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:11,084 INFO L93 Difference]: Finished difference Result 40083 states and 55293 transitions. [2022-11-25 23:47:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:47:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-25 23:47:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:11,139 INFO L225 Difference]: With dead ends: 40083 [2022-11-25 23:47:11,140 INFO L226 Difference]: Without dead ends: 30589 [2022-11-25 23:47:11,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:47:11,158 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2067 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:11,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2067 Valid, 2027 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:47:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30589 states. [2022-11-25 23:47:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30589 to 12509. [2022-11-25 23:47:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12509 states, 12502 states have (on average 1.3727403615421532) internal successors, (17162), 12508 states have internal predecessors, (17162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12509 states to 12509 states and 17162 transitions. [2022-11-25 23:47:14,695 INFO L78 Accepts]: Start accepts. Automaton has 12509 states and 17162 transitions. Word has length 67 [2022-11-25 23:47:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:14,695 INFO L495 AbstractCegarLoop]: Abstraction has 12509 states and 17162 transitions. [2022-11-25 23:47:14,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 12509 states and 17162 transitions. [2022-11-25 23:47:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 23:47:14,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:14,702 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:47:14,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:47:14,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:47:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1803782915, now seen corresponding path program 1 times [2022-11-25 23:47:14,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:14,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179289335] [2022-11-25 23:47:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:15,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:15,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179289335] [2022-11-25 23:47:15,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179289335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:15,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:15,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:47:15,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585913516] [2022-11-25 23:47:15,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:15,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:47:15,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:47:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:47:15,019 INFO L87 Difference]: Start difference. First operand 12509 states and 17162 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:25,193 INFO L93 Difference]: Finished difference Result 37761 states and 52111 transitions. [2022-11-25 23:47:25,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:47:25,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-25 23:47:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:25,234 INFO L225 Difference]: With dead ends: 37761 [2022-11-25 23:47:25,234 INFO L226 Difference]: Without dead ends: 28245 [2022-11-25 23:47:25,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:47:25,252 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 2387 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:25,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 1736 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:47:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28245 states. [2022-11-25 23:47:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28245 to 12489. [2022-11-25 23:47:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12489 states, 12482 states have (on average 1.3723762217593334) internal successors, (17130), 12488 states have internal predecessors, (17130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12489 states to 12489 states and 17130 transitions. [2022-11-25 23:47:29,157 INFO L78 Accepts]: Start accepts. Automaton has 12489 states and 17130 transitions. Word has length 67 [2022-11-25 23:47:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:29,158 INFO L495 AbstractCegarLoop]: Abstraction has 12489 states and 17130 transitions. [2022-11-25 23:47:29,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:29,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12489 states and 17130 transitions. [2022-11-25 23:47:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 23:47:29,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:29,165 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:47:29,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:47:29,165 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:47:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash -306757220, now seen corresponding path program 1 times [2022-11-25 23:47:29,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:29,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061097730] [2022-11-25 23:47:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:29,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:29,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:29,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061097730] [2022-11-25 23:47:29,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061097730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:29,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:29,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:47:29,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142216504] [2022-11-25 23:47:29,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:29,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:47:29,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:29,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:47:29,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:47:29,320 INFO L87 Difference]: Start difference. First operand 12489 states and 17130 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:47,987 INFO L93 Difference]: Finished difference Result 51364 states and 71205 transitions. [2022-11-25 23:47:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:47:47,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-25 23:47:47,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:48,064 INFO L225 Difference]: With dead ends: 51364 [2022-11-25 23:47:48,064 INFO L226 Difference]: Without dead ends: 46518 [2022-11-25 23:47:48,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:47:48,081 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2827 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2827 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:48,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2827 Valid, 1003 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:47:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46518 states. [2022-11-25 23:47:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46518 to 12558. [2022-11-25 23:47:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12558 states, 12551 states have (on average 1.3725599553820413) internal successors, (17227), 12557 states have internal predecessors, (17227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12558 states to 12558 states and 17227 transitions. [2022-11-25 23:47:52,472 INFO L78 Accepts]: Start accepts. Automaton has 12558 states and 17227 transitions. Word has length 67 [2022-11-25 23:47:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:52,473 INFO L495 AbstractCegarLoop]: Abstraction has 12558 states and 17227 transitions. [2022-11-25 23:47:52,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 12558 states and 17227 transitions. [2022-11-25 23:47:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 23:47:52,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:52,480 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:47:52,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:47:52,480 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:47:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1173964284, now seen corresponding path program 1 times [2022-11-25 23:47:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:52,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698533866] [2022-11-25 23:47:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:52,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:52,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:52,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698533866] [2022-11-25 23:47:52,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698533866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:52,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:52,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:47:52,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660796414] [2022-11-25 23:47:52,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:52,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:47:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:47:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:47:52,814 INFO L87 Difference]: Start difference. First operand 12558 states and 17227 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:48:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:48:06,346 INFO L93 Difference]: Finished difference Result 40386 states and 55722 transitions. [2022-11-25 23:48:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:48:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-25 23:48:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:48:06,389 INFO L225 Difference]: With dead ends: 40386 [2022-11-25 23:48:06,390 INFO L226 Difference]: Without dead ends: 30646 [2022-11-25 23:48:06,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:48:06,401 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 2149 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:48:06,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 2094 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 23:48:06,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30646 states. [2022-11-25 23:48:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30646 to 12427. [2022-11-25 23:48:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12427 states, 12420 states have (on average 1.3723832528180355) internal successors, (17045), 12426 states have internal predecessors, (17045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:48:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12427 states to 12427 states and 17045 transitions. [2022-11-25 23:48:10,800 INFO L78 Accepts]: Start accepts. Automaton has 12427 states and 17045 transitions. Word has length 67 [2022-11-25 23:48:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:48:10,800 INFO L495 AbstractCegarLoop]: Abstraction has 12427 states and 17045 transitions. [2022-11-25 23:48:10,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:48:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 12427 states and 17045 transitions. [2022-11-25 23:48:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 23:48:10,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:48:10,807 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:48:10,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 23:48:10,807 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:48:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:48:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1514144732, now seen corresponding path program 1 times [2022-11-25 23:48:10,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:48:10,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500813835] [2022-11-25 23:48:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:48:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:48:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:48:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:48:11,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:48:11,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500813835] [2022-11-25 23:48:11,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500813835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:48:11,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:48:11,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:48:11,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718316822] [2022-11-25 23:48:11,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:48:11,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:48:11,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:48:11,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:48:11,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:48:11,117 INFO L87 Difference]: Start difference. First operand 12427 states and 17045 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:48:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:48:22,968 INFO L93 Difference]: Finished difference Result 34761 states and 48085 transitions. [2022-11-25 23:48:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:48:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-25 23:48:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:48:23,004 INFO L225 Difference]: With dead ends: 34761 [2022-11-25 23:48:23,004 INFO L226 Difference]: Without dead ends: 24521 [2022-11-25 23:48:23,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:48:23,015 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 2148 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2148 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:48:23,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2148 Valid, 1447 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:48:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24521 states. [2022-11-25 23:48:28,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24521 to 12104. [2022-11-25 23:48:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12104 states, 12097 states have (on average 1.371331735140944) internal successors, (16589), 12103 states have internal predecessors, (16589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:48:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12104 states to 12104 states and 16589 transitions. [2022-11-25 23:48:28,175 INFO L78 Accepts]: Start accepts. Automaton has 12104 states and 16589 transitions. Word has length 67 [2022-11-25 23:48:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:48:28,175 INFO L495 AbstractCegarLoop]: Abstraction has 12104 states and 16589 transitions. [2022-11-25 23:48:28,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:48:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12104 states and 16589 transitions. [2022-11-25 23:48:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 23:48:28,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:48:28,181 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:48:28,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 23:48:28,182 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:48:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:48:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash -906901590, now seen corresponding path program 1 times [2022-11-25 23:48:28,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:48:28,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46543382] [2022-11-25 23:48:28,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:48:28,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:48:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:48:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:48:29,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:48:29,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46543382] [2022-11-25 23:48:29,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46543382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:48:29,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:48:29,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 23:48:29,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256163704] [2022-11-25 23:48:29,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:48:29,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:48:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:48:29,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:48:29,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:48:29,067 INFO L87 Difference]: Start difference. First operand 12104 states and 16589 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:48:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:48:51,978 INFO L93 Difference]: Finished difference Result 58766 states and 81627 transitions. [2022-11-25 23:48:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:48:51,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-25 23:48:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:48:52,048 INFO L225 Difference]: With dead ends: 58766 [2022-11-25 23:48:52,048 INFO L226 Difference]: Without dead ends: 48991 [2022-11-25 23:48:52,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-11-25 23:48:52,061 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 2925 mSDsluCounter, 4549 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2925 SdHoareTripleChecker+Valid, 5528 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:48:52,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2925 Valid, 5528 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:48:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48991 states. [2022-11-25 23:48:57,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48991 to 11779. [2022-11-25 23:48:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11779 states, 11774 states have (on average 1.3727705112960762) internal successors, (16163), 11778 states have internal predecessors, (16163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:48:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11779 states to 11779 states and 16163 transitions. [2022-11-25 23:48:57,366 INFO L78 Accepts]: Start accepts. Automaton has 11779 states and 16163 transitions. Word has length 68 [2022-11-25 23:48:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:48:57,366 INFO L495 AbstractCegarLoop]: Abstraction has 11779 states and 16163 transitions. [2022-11-25 23:48:57,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:48:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 11779 states and 16163 transitions. [2022-11-25 23:48:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 23:48:57,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:48:57,371 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:48:57,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 23:48:57,371 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:48:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:48:57,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1518478363, now seen corresponding path program 1 times [2022-11-25 23:48:57,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:48:57,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636139712] [2022-11-25 23:48:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:48:57,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:48:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:48:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:48:57,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:48:57,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636139712] [2022-11-25 23:48:57,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636139712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:48:57,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:48:57,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:48:57,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690489927] [2022-11-25 23:48:57,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:48:57,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:48:57,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:48:57,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:48:57,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:48:57,946 INFO L87 Difference]: Start difference. First operand 11779 states and 16163 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:49:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:49:19,741 INFO L93 Difference]: Finished difference Result 48179 states and 66915 transitions. [2022-11-25 23:49:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:49:19,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-25 23:49:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:49:19,798 INFO L225 Difference]: With dead ends: 48179 [2022-11-25 23:49:19,798 INFO L226 Difference]: Without dead ends: 38455 [2022-11-25 23:49:19,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:49:19,808 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 2027 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:49:19,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 2877 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:49:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38455 states. [2022-11-25 23:49:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38455 to 11555. [2022-11-25 23:49:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11555 states, 11551 states have (on average 1.371829278850316) internal successors, (15846), 11554 states have internal predecessors, (15846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:49:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11555 states to 11555 states and 15846 transitions. [2022-11-25 23:49:26,009 INFO L78 Accepts]: Start accepts. Automaton has 11555 states and 15846 transitions. Word has length 68 [2022-11-25 23:49:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:49:26,009 INFO L495 AbstractCegarLoop]: Abstraction has 11555 states and 15846 transitions. [2022-11-25 23:49:26,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:49:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11555 states and 15846 transitions. [2022-11-25 23:49:26,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 23:49:26,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:49:26,012 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:49:26,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 23:49:26,012 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:49:26,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:49:26,013 INFO L85 PathProgramCache]: Analyzing trace with hash -289412261, now seen corresponding path program 1 times [2022-11-25 23:49:26,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:49:26,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289601418] [2022-11-25 23:49:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:49:26,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:49:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:49:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:49:26,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:49:26,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289601418] [2022-11-25 23:49:26,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289601418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:49:26,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:49:26,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 23:49:26,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939417342] [2022-11-25 23:49:26,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:49:26,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:49:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:49:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:49:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:49:26,669 INFO L87 Difference]: Start difference. First operand 11555 states and 15846 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:49:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:49:55,023 INFO L93 Difference]: Finished difference Result 52237 states and 72716 transitions. [2022-11-25 23:49:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:49:55,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-25 23:49:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:49:55,089 INFO L225 Difference]: With dead ends: 52237 [2022-11-25 23:49:55,089 INFO L226 Difference]: Without dead ends: 42749 [2022-11-25 23:49:55,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:49:55,107 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 1109 mSDsluCounter, 3851 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 4559 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:49:55,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 4559 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:49:55,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42749 states. [2022-11-25 23:50:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42749 to 11541. [2022-11-25 23:50:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11541 states, 11538 states have (on average 1.3712081816605997) internal successors, (15821), 11540 states have internal predecessors, (15821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11541 states to 11541 states and 15821 transitions. [2022-11-25 23:50:02,227 INFO L78 Accepts]: Start accepts. Automaton has 11541 states and 15821 transitions. Word has length 68 [2022-11-25 23:50:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:02,227 INFO L495 AbstractCegarLoop]: Abstraction has 11541 states and 15821 transitions. [2022-11-25 23:50:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 11541 states and 15821 transitions. [2022-11-25 23:50:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 23:50:02,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:02,231 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:50:02,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 23:50:02,231 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:50:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1473571080, now seen corresponding path program 1 times [2022-11-25 23:50:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:02,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68237668] [2022-11-25 23:50:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:02,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:02,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:02,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68237668] [2022-11-25 23:50:02,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68237668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:02,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:02,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:02,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094039415] [2022-11-25 23:50:02,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:02,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:02,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:02,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:02,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:02,301 INFO L87 Difference]: Start difference. First operand 11541 states and 15821 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:12,109 INFO L93 Difference]: Finished difference Result 21641 states and 29766 transitions. [2022-11-25 23:50:12,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:12,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-25 23:50:12,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:12,129 INFO L225 Difference]: With dead ends: 21641 [2022-11-25 23:50:12,129 INFO L226 Difference]: Without dead ends: 15781 [2022-11-25 23:50:12,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:12,136 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 337 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:12,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 442 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:12,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15781 states. [2022-11-25 23:50:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15781 to 15779. [2022-11-25 23:50:21,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15779 states, 15778 states have (on average 1.3755862593484598) internal successors, (21704), 15778 states have internal predecessors, (21704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15779 states to 15779 states and 21704 transitions. [2022-11-25 23:50:21,052 INFO L78 Accepts]: Start accepts. Automaton has 15779 states and 21704 transitions. Word has length 70 [2022-11-25 23:50:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:21,052 INFO L495 AbstractCegarLoop]: Abstraction has 15779 states and 21704 transitions. [2022-11-25 23:50:21,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:21,052 INFO L276 IsEmpty]: Start isEmpty. Operand 15779 states and 21704 transitions. [2022-11-25 23:50:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 23:50:21,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:21,059 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:50:21,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 23:50:21,060 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:50:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:21,060 INFO L85 PathProgramCache]: Analyzing trace with hash -377751817, now seen corresponding path program 1 times [2022-11-25 23:50:21,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:21,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322088813] [2022-11-25 23:50:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:21,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:21,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:21,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322088813] [2022-11-25 23:50:21,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322088813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:21,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:21,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:50:21,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322222605] [2022-11-25 23:50:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:21,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:50:21,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:50:21,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:50:21,231 INFO L87 Difference]: Start difference. First operand 15779 states and 21704 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:31,187 INFO L93 Difference]: Finished difference Result 22557 states and 31055 transitions. [2022-11-25 23:50:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:50:31,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-25 23:50:31,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:31,207 INFO L225 Difference]: With dead ends: 22557 [2022-11-25 23:50:31,207 INFO L226 Difference]: Without dead ends: 15297 [2022-11-25 23:50:31,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:50:31,215 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 980 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:31,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 1020 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:50:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15297 states. [2022-11-25 23:50:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15297 to 12305. [2022-11-25 23:50:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12305 states, 12304 states have (on average 1.3609395318595578) internal successors, (16745), 12304 states have internal predecessors, (16745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12305 states to 12305 states and 16745 transitions. [2022-11-25 23:50:38,673 INFO L78 Accepts]: Start accepts. Automaton has 12305 states and 16745 transitions. Word has length 72 [2022-11-25 23:50:38,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:38,673 INFO L495 AbstractCegarLoop]: Abstraction has 12305 states and 16745 transitions. [2022-11-25 23:50:38,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:38,674 INFO L276 IsEmpty]: Start isEmpty. Operand 12305 states and 16745 transitions. [2022-11-25 23:50:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 23:50:38,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:38,680 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:50:38,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 23:50:38,680 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:50:38,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:38,681 INFO L85 PathProgramCache]: Analyzing trace with hash 5754034, now seen corresponding path program 1 times [2022-11-25 23:50:38,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:38,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214046609] [2022-11-25 23:50:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:38,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:38,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:38,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214046609] [2022-11-25 23:50:38,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214046609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:38,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:38,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:38,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225740342] [2022-11-25 23:50:38,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:38,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:38,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:38,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:38,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:38,841 INFO L87 Difference]: Start difference. First operand 12305 states and 16745 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:50,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:50,063 INFO L93 Difference]: Finished difference Result 25916 states and 35705 transitions. [2022-11-25 23:50:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:50,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-25 23:50:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:50,086 INFO L225 Difference]: With dead ends: 25916 [2022-11-25 23:50:50,086 INFO L226 Difference]: Without dead ends: 18060 [2022-11-25 23:50:50,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:50,095 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 121 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:50,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 745 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:50:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18060 states. [2022-11-25 23:51:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18060 to 16655. [2022-11-25 23:51:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16655 states, 16654 states have (on average 1.3567311156478925) internal successors, (22595), 16654 states have internal predecessors, (22595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16655 states to 16655 states and 22595 transitions. [2022-11-25 23:51:00,435 INFO L78 Accepts]: Start accepts. Automaton has 16655 states and 22595 transitions. Word has length 73 [2022-11-25 23:51:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:00,435 INFO L495 AbstractCegarLoop]: Abstraction has 16655 states and 22595 transitions. [2022-11-25 23:51:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 16655 states and 22595 transitions. [2022-11-25 23:51:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 23:51:00,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:00,440 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:51:00,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 23:51:00,441 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:51:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1913350554, now seen corresponding path program 1 times [2022-11-25 23:51:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:00,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789169619] [2022-11-25 23:51:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:00,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:00,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789169619] [2022-11-25 23:51:00,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789169619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:00,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:00,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:51:00,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988764457] [2022-11-25 23:51:00,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:00,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:51:00,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:00,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:51:00,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:51:00,525 INFO L87 Difference]: Start difference. First operand 16655 states and 22595 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:11,224 INFO L93 Difference]: Finished difference Result 23973 states and 32591 transitions. [2022-11-25 23:51:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:51:11,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-25 23:51:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:11,244 INFO L225 Difference]: With dead ends: 23973 [2022-11-25 23:51:11,244 INFO L226 Difference]: Without dead ends: 16211 [2022-11-25 23:51:11,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:51:11,249 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 209 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:11,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 812 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:51:11,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16211 states. [2022-11-25 23:51:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16211 to 16209. [2022-11-25 23:51:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16209 states, 16208 states have (on average 1.346804047384008) internal successors, (21829), 16208 states have internal predecessors, (21829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16209 states to 16209 states and 21829 transitions. [2022-11-25 23:51:21,399 INFO L78 Accepts]: Start accepts. Automaton has 16209 states and 21829 transitions. Word has length 76 [2022-11-25 23:51:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:21,400 INFO L495 AbstractCegarLoop]: Abstraction has 16209 states and 21829 transitions. [2022-11-25 23:51:21,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 16209 states and 21829 transitions. [2022-11-25 23:51:21,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 23:51:21,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:21,404 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:51:21,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 23:51:21,404 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:51:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:21,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1799475808, now seen corresponding path program 1 times [2022-11-25 23:51:21,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:21,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99911115] [2022-11-25 23:51:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:21,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:21,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:21,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99911115] [2022-11-25 23:51:21,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99911115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:21,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:21,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:51:21,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093748959] [2022-11-25 23:51:21,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:21,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:51:21,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:21,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:51:21,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:51:21,536 INFO L87 Difference]: Start difference. First operand 16209 states and 21829 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:37,341 INFO L93 Difference]: Finished difference Result 35113 states and 47755 transitions. [2022-11-25 23:51:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:51:37,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-25 23:51:37,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:37,373 INFO L225 Difference]: With dead ends: 35113 [2022-11-25 23:51:37,373 INFO L226 Difference]: Without dead ends: 24319 [2022-11-25 23:51:37,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:51:37,381 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 109 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:37,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 734 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:51:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24319 states. [2022-11-25 23:51:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24319 to 22349. [2022-11-25 23:51:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22349 states, 22348 states have (on average 1.3379720780383033) internal successors, (29901), 22348 states have internal predecessors, (29901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22349 states to 22349 states and 29901 transitions. [2022-11-25 23:51:52,268 INFO L78 Accepts]: Start accepts. Automaton has 22349 states and 29901 transitions. Word has length 76 [2022-11-25 23:51:52,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:52,268 INFO L495 AbstractCegarLoop]: Abstraction has 22349 states and 29901 transitions. [2022-11-25 23:51:52,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 22349 states and 29901 transitions. [2022-11-25 23:51:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 23:51:52,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:52,272 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:51:52,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 23:51:52,273 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:51:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash -257110886, now seen corresponding path program 1 times [2022-11-25 23:51:52,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:52,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678208771] [2022-11-25 23:51:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:52,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:52,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:52,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678208771] [2022-11-25 23:51:52,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678208771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:52,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:52,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:51:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485386711] [2022-11-25 23:51:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:52,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:51:52,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:51:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:51:52,349 INFO L87 Difference]: Start difference. First operand 22349 states and 29901 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:06,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:52:06,723 INFO L93 Difference]: Finished difference Result 30492 states and 40858 transitions. [2022-11-25 23:52:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:52:06,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-25 23:52:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:52:06,749 INFO L225 Difference]: With dead ends: 30492 [2022-11-25 23:52:06,749 INFO L226 Difference]: Without dead ends: 21141 [2022-11-25 23:52:06,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:52:06,757 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 200 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:52:06,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 807 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:52:06,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21141 states. [2022-11-25 23:52:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21141 to 21139. [2022-11-25 23:52:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21139 states, 21138 states have (on average 1.326473649351878) internal successors, (28039), 21138 states have internal predecessors, (28039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21139 states to 21139 states and 28039 transitions. [2022-11-25 23:52:21,050 INFO L78 Accepts]: Start accepts. Automaton has 21139 states and 28039 transitions. Word has length 79 [2022-11-25 23:52:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:52:21,050 INFO L495 AbstractCegarLoop]: Abstraction has 21139 states and 28039 transitions. [2022-11-25 23:52:21,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 21139 states and 28039 transitions. [2022-11-25 23:52:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 23:52:21,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:21,055 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:52:21,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 23:52:21,056 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:52:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1688935367, now seen corresponding path program 1 times [2022-11-25 23:52:21,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:21,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231542549] [2022-11-25 23:52:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:21,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:52:21,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:21,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231542549] [2022-11-25 23:52:21,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231542549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:52:21,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:52:21,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:52:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577605914] [2022-11-25 23:52:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:52:21,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:52:21,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:52:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:52:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:52:21,174 INFO L87 Difference]: Start difference. First operand 21139 states and 28039 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:52:42,858 INFO L93 Difference]: Finished difference Result 46144 states and 61741 transitions. [2022-11-25 23:52:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:52:42,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-25 23:52:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:52:42,903 INFO L225 Difference]: With dead ends: 46144 [2022-11-25 23:52:42,903 INFO L226 Difference]: Without dead ends: 31634 [2022-11-25 23:52:42,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:52:42,914 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 96 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:52:42,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 716 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:52:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31634 states. [2022-11-25 23:53:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31634 to 29151. [2022-11-25 23:53:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29151 states, 29150 states have (on average 1.315746140651801) internal successors, (38354), 29150 states have internal predecessors, (38354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29151 states to 29151 states and 38354 transitions. [2022-11-25 23:53:03,401 INFO L78 Accepts]: Start accepts. Automaton has 29151 states and 38354 transitions. Word has length 79 [2022-11-25 23:53:03,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:03,402 INFO L495 AbstractCegarLoop]: Abstraction has 29151 states and 38354 transitions. [2022-11-25 23:53:03,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 29151 states and 38354 transitions. [2022-11-25 23:53:03,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 23:53:03,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:03,406 INFO L195 NwaCegarLoop]: 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] [2022-11-25 23:53:03,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 23:53:03,406 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-25 23:53:03,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash 304620214, now seen corresponding path program 1 times [2022-11-25 23:53:03,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:03,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481295038] [2022-11-25 23:53:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:03,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:53:03,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:03,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481295038] [2022-11-25 23:53:03,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481295038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:03,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:03,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:53:03,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293403959] [2022-11-25 23:53:03,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:03,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:53:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:03,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:53:03,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:53:03,476 INFO L87 Difference]: Start difference. First operand 29151 states and 38354 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:21,582 INFO L93 Difference]: Finished difference Result 35841 states and 47192 transitions. [2022-11-25 23:53:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:53:21,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-11-25 23:53:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:21,619 INFO L225 Difference]: With dead ends: 35841 [2022-11-25 23:53:21,619 INFO L226 Difference]: Without dead ends: 26394 [2022-11-25 23:53:21,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:53:21,626 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 157 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:21,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 750 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:53:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26394 states.