./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba --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 d8e58e4dd7f21a353342bc0a492b99ed688619f4c3decc3151bb6acbb6daeee1 --- 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-b5237d8 [2022-11-22 00:30:39,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:30:39,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:30:39,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:30:39,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:30:39,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:30:39,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:30:39,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:30:39,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:30:39,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:30:39,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:30:39,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:30:39,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:30:39,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:30:39,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:30:39,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:30:39,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:30:39,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:30:39,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:30:39,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:30:39,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:30:39,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:30:39,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:30:39,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:30:39,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:30:39,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:30:39,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:30:39,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:30:39,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:30:39,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:30:39,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:30:39,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:30:39,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:30:39,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:30:39,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:30:39,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:30:39,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:30:39,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:30:39,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:30:39,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:30:39,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:30:39,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 00:30:39,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:30:39,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:30:39,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:30:39,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:30:39,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:30:39,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:30:39,436 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:30:39,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:30:39,436 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:30:39,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:30:39,437 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:30:39,437 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:30:39,437 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:30:39,437 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:30:39,438 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:30:39,438 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:30:39,438 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:30:39,438 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:30:39,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:30:39,439 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:30:39,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:30:39,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:30:39,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:30:39,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:30:39,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:30:39,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:30:39,441 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:30:39,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:30:39,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:30:39,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:30:39,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:30:39,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:30:39,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:30:39,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:30:39,444 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:30:39,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:30:39,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:30:39,444 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:30:39,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:30:39,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:30:39,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:30:39,446 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8e58e4dd7f21a353342bc0a492b99ed688619f4c3decc3151bb6acbb6daeee1 [2022-11-22 00:30:39,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:30:39,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:30:39,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:30:39,832 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:30:39,833 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:30:39,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c [2022-11-22 00:30:43,281 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:30:43,965 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:30:43,966 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c [2022-11-22 00:30:44,011 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/data/e10cff481/604c6b30dff5411abbeca69c0cccf45f/FLAGeb6d71e81 [2022-11-22 00:30:44,031 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/data/e10cff481/604c6b30dff5411abbeca69c0cccf45f [2022-11-22 00:30:44,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:30:44,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:30:44,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:30:44,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:30:44,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:30:44,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:30:44" (1/1) ... [2022-11-22 00:30:44,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369c5fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:44, skipping insertion in model container [2022-11-22 00:30:44,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:30:44" (1/1) ... [2022-11-22 00:30:44,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:30:44,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:30:45,100 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[80190,80203] [2022-11-22 00:30:45,311 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[115653,115666] [2022-11-22 00:30:45,409 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[133417,133430] [2022-11-22 00:30:45,448 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[142316,142329] [2022-11-22 00:30:45,468 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[146749,146762] [2022-11-22 00:30:45,494 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[151062,151075] [2022-11-22 00:30:45,643 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[185818,185831] [2022-11-22 00:30:45,731 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[203409,203422] [2022-11-22 00:30:45,763 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[212345,212358] [2022-11-22 00:30:45,779 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[216815,216828] [2022-11-22 00:30:45,795 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[221165,221178] [2022-11-22 00:30:45,864 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[240022,240035] [2022-11-22 00:30:45,901 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[248958,248971] [2022-11-22 00:30:45,919 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[253428,253441] [2022-11-22 00:30:45,936 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[257778,257791] [2022-11-22 00:30:45,955 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[262743,262756] [2022-11-22 00:30:45,971 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[267102,267115] [2022-11-22 00:30:45,986 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[271572,271585] [2022-11-22 00:30:46,002 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[275922,275935] [2022-11-22 00:30:46,019 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[280508,280521] [2022-11-22 00:30:46,037 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[285025,285038] [2022-11-22 00:30:46,054 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[289491,289504] [2022-11-22 00:30:46,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:30:46,145 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:30:46,422 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[80190,80203] [2022-11-22 00:30:46,556 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[115653,115666] [2022-11-22 00:30:46,618 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[133417,133430] [2022-11-22 00:30:46,647 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[142316,142329] [2022-11-22 00:30:46,662 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[146749,146762] [2022-11-22 00:30:46,677 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[151062,151075] [2022-11-22 00:30:46,776 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[185818,185831] [2022-11-22 00:30:46,829 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[203409,203422] [2022-11-22 00:30:46,857 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[212345,212358] [2022-11-22 00:30:46,872 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[216815,216828] [2022-11-22 00:30:46,887 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[221165,221178] [2022-11-22 00:30:46,943 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[240022,240035] [2022-11-22 00:30:46,969 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[248958,248971] [2022-11-22 00:30:46,982 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[253428,253441] [2022-11-22 00:30:46,997 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[257778,257791] [2022-11-22 00:30:47,012 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[262743,262756] [2022-11-22 00:30:47,026 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[267102,267115] [2022-11-22 00:30:47,039 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[271572,271585] [2022-11-22 00:30:47,053 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[275922,275935] [2022-11-22 00:30:47,067 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[280508,280521] [2022-11-22 00:30:47,081 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[285025,285038] [2022-11-22 00:30:47,097 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_1e3362b7-f04b-4561-8989-2542b2a0fa52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c[289491,289504] [2022-11-22 00:30:47,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:30:47,173 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:30:47,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47 WrapperNode [2022-11-22 00:30:47,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:30:47,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:30:47,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:30:47,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:30:47,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,451 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12420 [2022-11-22 00:30:47,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:30:47,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:30:47,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:30:47,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:30:47,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,833 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:30:47,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:30:47,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:30:47,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:30:47,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (1/1) ... [2022-11-22 00:30:47,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:30:47,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:30:47,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:30:47,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:30:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:30:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:30:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:30:47,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:30:48,500 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:30:48,502 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:30:55,053 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:30:55,687 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:30:55,687 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 00:30:55,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:30:55 BoogieIcfgContainer [2022-11-22 00:30:55,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:30:55,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:30:55,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:30:55,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:30:55,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:30:44" (1/3) ... [2022-11-22 00:30:55,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e35663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:30:55, skipping insertion in model container [2022-11-22 00:30:55,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:30:47" (2/3) ... [2022-11-22 00:30:55,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e35663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:30:55, skipping insertion in model container [2022-11-22 00:30:55,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:30:55" (3/3) ... [2022-11-22 00:30:55,705 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+sep-reducer.c [2022-11-22 00:30:55,726 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:30:55,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-22 00:30:55,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:30:55,856 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;@3a12d950, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:30:55,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-22 00:30:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 2505 states, 2482 states have (on average 1.7594681708299758) internal successors, (4367), 2504 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:30:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 00:30:55,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:30:55,920 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, 1, 1, 1, 1] [2022-11-22 00:30:55,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:30:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:30:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1286229050, now seen corresponding path program 1 times [2022-11-22 00:30:55,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:30:55,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794094585] [2022-11-22 00:30:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:55,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:30:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:30:56,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:30:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794094585] [2022-11-22 00:30:56,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794094585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:30:56,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:30:56,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:30:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342144195] [2022-11-22 00:30:56,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:30:56,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:30:56,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:30:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:30:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:30:56,815 INFO L87 Difference]: Start difference. First operand has 2505 states, 2482 states have (on average 1.7594681708299758) internal successors, (4367), 2504 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:30:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:30:59,656 INFO L93 Difference]: Finished difference Result 2966 states and 5095 transitions. [2022-11-22 00:30:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:30:59,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-22 00:30:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:30:59,694 INFO L225 Difference]: With dead ends: 2966 [2022-11-22 00:30:59,694 INFO L226 Difference]: Without dead ends: 1731 [2022-11-22 00:30:59,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:30:59,717 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8711 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8711 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:30:59,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8711 Valid, 1671 Invalid, 1339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 00:30:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2022-11-22 00:30:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2022-11-22 00:30:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1709 states have (on average 1.2855471035693389) internal successors, (2197), 1730 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:30:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2197 transitions. [2022-11-22 00:30:59,937 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2197 transitions. Word has length 86 [2022-11-22 00:30:59,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:30:59,941 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2197 transitions. [2022-11-22 00:30:59,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:30:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2197 transitions. [2022-11-22 00:30:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 00:30:59,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:30:59,950 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, 1, 1, 1, 1] [2022-11-22 00:30:59,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:30:59,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:30:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:30:59,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1719768578, now seen corresponding path program 1 times [2022-11-22 00:30:59,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:30:59,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922999309] [2022-11-22 00:30:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:00,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:00,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922999309] [2022-11-22 00:31:00,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922999309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:00,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:00,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:31:00,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018348370] [2022-11-22 00:31:00,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:00,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:31:00,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:31:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:31:00,343 INFO L87 Difference]: Start difference. First operand 1731 states and 2197 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:02,076 INFO L93 Difference]: Finished difference Result 2426 states and 3095 transitions. [2022-11-22 00:31:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:31:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-22 00:31:02,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:02,085 INFO L225 Difference]: With dead ends: 2426 [2022-11-22 00:31:02,085 INFO L226 Difference]: Without dead ends: 1603 [2022-11-22 00:31:02,087 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 [2022-11-22 00:31:02,095 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 6021 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6021 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:02,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6021 Valid, 956 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 00:31:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2022-11-22 00:31:02,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1603. [2022-11-22 00:31:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1581 states have (on average 1.2979127134724857) internal successors, (2052), 1602 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2052 transitions. [2022-11-22 00:31:02,196 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2052 transitions. Word has length 86 [2022-11-22 00:31:02,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:02,198 INFO L495 AbstractCegarLoop]: Abstraction has 1603 states and 2052 transitions. [2022-11-22 00:31:02,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:02,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2052 transitions. [2022-11-22 00:31:02,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 00:31:02,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:02,205 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, 1, 1, 1, 1] [2022-11-22 00:31:02,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:31:02,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:02,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1685761605, now seen corresponding path program 1 times [2022-11-22 00:31:02,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:02,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026518591] [2022-11-22 00:31:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:02,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:02,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:02,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026518591] [2022-11-22 00:31:02,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026518591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:02,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:02,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:31:02,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740736515] [2022-11-22 00:31:02,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:02,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:31:02,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:31:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:31:02,561 INFO L87 Difference]: Start difference. First operand 1603 states and 2052 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:04,081 INFO L93 Difference]: Finished difference Result 2154 states and 2757 transitions. [2022-11-22 00:31:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:31:04,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-22 00:31:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:04,090 INFO L225 Difference]: With dead ends: 2154 [2022-11-22 00:31:04,090 INFO L226 Difference]: Without dead ends: 1347 [2022-11-22 00:31:04,092 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 [2022-11-22 00:31:04,096 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 5148 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5148 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:04,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5148 Valid, 862 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 00:31:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2022-11-22 00:31:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1347. [2022-11-22 00:31:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1325 states have (on average 1.3124528301886793) internal successors, (1739), 1346 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1739 transitions. [2022-11-22 00:31:04,196 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1739 transitions. Word has length 86 [2022-11-22 00:31:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:04,198 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 1739 transitions. [2022-11-22 00:31:04,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1739 transitions. [2022-11-22 00:31:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-22 00:31:04,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:04,202 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, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:04,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:31:04,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash -518082489, now seen corresponding path program 1 times [2022-11-22 00:31:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:04,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6112071] [2022-11-22 00:31:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:04,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:04,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:04,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6112071] [2022-11-22 00:31:04,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6112071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:04,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:04,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:31:04,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478665601] [2022-11-22 00:31:04,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:04,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:31:04,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:31:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:31:04,480 INFO L87 Difference]: Start difference. First operand 1347 states and 1739 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:05,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:05,679 INFO L93 Difference]: Finished difference Result 1940 states and 2510 transitions. [2022-11-22 00:31:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:31:05,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-22 00:31:05,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:05,684 INFO L225 Difference]: With dead ends: 1940 [2022-11-22 00:31:05,684 INFO L226 Difference]: Without dead ends: 1252 [2022-11-22 00:31:05,685 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 [2022-11-22 00:31:05,686 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 4826 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4826 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:05,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4826 Valid, 817 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 00:31:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-11-22 00:31:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2022-11-22 00:31:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1230 states have (on average 1.3227642276422764) internal successors, (1627), 1251 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1627 transitions. [2022-11-22 00:31:05,773 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1627 transitions. Word has length 88 [2022-11-22 00:31:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:05,773 INFO L495 AbstractCegarLoop]: Abstraction has 1252 states and 1627 transitions. [2022-11-22 00:31:05,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1627 transitions. [2022-11-22 00:31:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-22 00:31:05,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:05,777 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:05,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:31:05,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:05,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1951557911, now seen corresponding path program 1 times [2022-11-22 00:31:05,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:05,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128887814] [2022-11-22 00:31:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:05,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:06,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:06,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128887814] [2022-11-22 00:31:06,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128887814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:06,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:06,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:31:06,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274008522] [2022-11-22 00:31:06,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:06,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:31:06,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:06,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:31:06,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:31:06,034 INFO L87 Difference]: Start difference. First operand 1252 states and 1627 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:07,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:07,128 INFO L93 Difference]: Finished difference Result 1563 states and 1994 transitions. [2022-11-22 00:31:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:31:07,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-11-22 00:31:07,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:07,134 INFO L225 Difference]: With dead ends: 1563 [2022-11-22 00:31:07,134 INFO L226 Difference]: Without dead ends: 957 [2022-11-22 00:31:07,135 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 [2022-11-22 00:31:07,136 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 3617 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3617 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:07,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3617 Valid, 642 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 00:31:07,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-11-22 00:31:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2022-11-22 00:31:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 935 states have (on average 1.3251336898395722) internal successors, (1239), 956 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1239 transitions. [2022-11-22 00:31:07,224 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1239 transitions. Word has length 90 [2022-11-22 00:31:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:07,224 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1239 transitions. [2022-11-22 00:31:07,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:07,225 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1239 transitions. [2022-11-22 00:31:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-22 00:31:07,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:07,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:07,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:31:07,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:07,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1685476223, now seen corresponding path program 1 times [2022-11-22 00:31:07,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:07,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324331932] [2022-11-22 00:31:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:07,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:07,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:07,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324331932] [2022-11-22 00:31:07,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324331932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:07,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:07,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:31:07,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029373477] [2022-11-22 00:31:07,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:07,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:31:07,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:31:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:31:07,523 INFO L87 Difference]: Start difference. First operand 957 states and 1239 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:08,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:08,298 INFO L93 Difference]: Finished difference Result 1122 states and 1411 transitions. [2022-11-22 00:31:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:31:08,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-22 00:31:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:08,302 INFO L225 Difference]: With dead ends: 1122 [2022-11-22 00:31:08,303 INFO L226 Difference]: Without dead ends: 667 [2022-11-22 00:31:08,304 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 [2022-11-22 00:31:08,305 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 2451 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2451 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:08,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2451 Valid, 489 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:31:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-22 00:31:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2022-11-22 00:31:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 645 states have (on average 1.324031007751938) internal successors, (854), 666 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 854 transitions. [2022-11-22 00:31:08,414 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 854 transitions. Word has length 92 [2022-11-22 00:31:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:08,415 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 854 transitions. [2022-11-22 00:31:08,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 854 transitions. [2022-11-22 00:31:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 00:31:08,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:08,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:08,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:31:08,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1346771176, now seen corresponding path program 1 times [2022-11-22 00:31:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:08,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782643154] [2022-11-22 00:31:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:08,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:09,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:09,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782643154] [2022-11-22 00:31:09,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782643154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:09,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:09,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 00:31:09,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317358526] [2022-11-22 00:31:09,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:09,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 00:31:09,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 00:31:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-22 00:31:09,310 INFO L87 Difference]: Start difference. First operand 667 states and 854 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:11,461 INFO L93 Difference]: Finished difference Result 1336 states and 1708 transitions. [2022-11-22 00:31:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:31:11,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-22 00:31:11,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:11,465 INFO L225 Difference]: With dead ends: 1336 [2022-11-22 00:31:11,465 INFO L226 Difference]: Without dead ends: 1122 [2022-11-22 00:31:11,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:31:11,467 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 3159 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3159 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:11,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3159 Valid, 2665 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:31:11,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-11-22 00:31:11,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 667. [2022-11-22 00:31:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 645 states have (on average 1.3224806201550388) internal successors, (853), 666 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 853 transitions. [2022-11-22 00:31:11,561 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 853 transitions. Word has length 94 [2022-11-22 00:31:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:11,561 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 853 transitions. [2022-11-22 00:31:11,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:11,562 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 853 transitions. [2022-11-22 00:31:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 00:31:11,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:11,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:11,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:31:11,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:11,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1670913064, now seen corresponding path program 1 times [2022-11-22 00:31:11,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:11,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169630501] [2022-11-22 00:31:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:12,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:12,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169630501] [2022-11-22 00:31:12,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169630501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:12,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:12,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:31:12,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940522702] [2022-11-22 00:31:12,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:12,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:31:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:12,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:31:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:31:12,112 INFO L87 Difference]: Start difference. First operand 667 states and 853 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:13,572 INFO L93 Difference]: Finished difference Result 1242 states and 1532 transitions. [2022-11-22 00:31:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:31:13,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-22 00:31:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:13,577 INFO L225 Difference]: With dead ends: 1242 [2022-11-22 00:31:13,577 INFO L226 Difference]: Without dead ends: 888 [2022-11-22 00:31:13,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:31:13,581 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 3787 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:13,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3787 Valid, 1102 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 00:31:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-11-22 00:31:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 667. [2022-11-22 00:31:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 645 states have (on average 1.3209302325581396) internal successors, (852), 666 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 852 transitions. [2022-11-22 00:31:13,695 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 852 transitions. Word has length 94 [2022-11-22 00:31:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:13,696 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 852 transitions. [2022-11-22 00:31:13,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 852 transitions. [2022-11-22 00:31:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 00:31:13,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:13,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:13,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:31:13,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:13,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:13,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1574448360, now seen corresponding path program 1 times [2022-11-22 00:31:13,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:13,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586505720] [2022-11-22 00:31:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:13,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:14,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:14,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586505720] [2022-11-22 00:31:14,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586505720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:14,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:14,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:14,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357708232] [2022-11-22 00:31:14,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:14,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:14,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:14,270 INFO L87 Difference]: Start difference. First operand 667 states and 852 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:16,421 INFO L93 Difference]: Finished difference Result 1305 states and 1674 transitions. [2022-11-22 00:31:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:16,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-22 00:31:16,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:16,427 INFO L225 Difference]: With dead ends: 1305 [2022-11-22 00:31:16,427 INFO L226 Difference]: Without dead ends: 1126 [2022-11-22 00:31:16,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:31:16,431 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 3194 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3194 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:16,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3194 Valid, 3021 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:31:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-11-22 00:31:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 667. [2022-11-22 00:31:16,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 645 states have (on average 1.3193798449612404) internal successors, (851), 666 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 851 transitions. [2022-11-22 00:31:16,551 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 851 transitions. Word has length 94 [2022-11-22 00:31:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:16,551 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 851 transitions. [2022-11-22 00:31:16,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 851 transitions. [2022-11-22 00:31:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 00:31:16,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:16,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:16,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:31:16,555 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash -53559704, now seen corresponding path program 1 times [2022-11-22 00:31:16,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:16,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063548806] [2022-11-22 00:31:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:16,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:17,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:17,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063548806] [2022-11-22 00:31:17,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063548806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:17,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:17,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743166044] [2022-11-22 00:31:17,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:17,217 INFO L87 Difference]: Start difference. First operand 667 states and 851 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:19,447 INFO L93 Difference]: Finished difference Result 1224 states and 1570 transitions. [2022-11-22 00:31:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:31:19,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-22 00:31:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:19,452 INFO L225 Difference]: With dead ends: 1224 [2022-11-22 00:31:19,453 INFO L226 Difference]: Without dead ends: 1116 [2022-11-22 00:31:19,454 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 [2022-11-22 00:31:19,455 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 3015 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 3805 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:19,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3015 Valid, 3805 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 00:31:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-11-22 00:31:19,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 667. [2022-11-22 00:31:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 645 states have (on average 1.317829457364341) internal successors, (850), 666 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 850 transitions. [2022-11-22 00:31:19,600 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 850 transitions. Word has length 94 [2022-11-22 00:31:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:19,600 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 850 transitions. [2022-11-22 00:31:19,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 850 transitions. [2022-11-22 00:31:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 00:31:19,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:19,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:19,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:31:19,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash 339408658, now seen corresponding path program 1 times [2022-11-22 00:31:19,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:19,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508078358] [2022-11-22 00:31:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:19,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:20,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:20,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508078358] [2022-11-22 00:31:20,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508078358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:20,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:20,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547681920] [2022-11-22 00:31:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:20,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:20,250 INFO L87 Difference]: Start difference. First operand 667 states and 850 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:22,259 INFO L93 Difference]: Finished difference Result 1188 states and 1515 transitions. [2022-11-22 00:31:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:31:22,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-22 00:31:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:22,264 INFO L225 Difference]: With dead ends: 1188 [2022-11-22 00:31:22,264 INFO L226 Difference]: Without dead ends: 1114 [2022-11-22 00:31:22,266 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 [2022-11-22 00:31:22,266 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 2959 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2959 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:22,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2959 Valid, 2932 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 00:31:22,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2022-11-22 00:31:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 667. [2022-11-22 00:31:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 645 states have (on average 1.3162790697674418) internal successors, (849), 666 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 849 transitions. [2022-11-22 00:31:22,397 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 849 transitions. Word has length 95 [2022-11-22 00:31:22,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:22,398 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 849 transitions. [2022-11-22 00:31:22,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 849 transitions. [2022-11-22 00:31:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 00:31:22,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:22,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:22,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:31:22,401 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:22,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1405985513, now seen corresponding path program 1 times [2022-11-22 00:31:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:22,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306005306] [2022-11-22 00:31:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:23,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:23,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306005306] [2022-11-22 00:31:23,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306005306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:23,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:23,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:31:23,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414894407] [2022-11-22 00:31:23,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:23,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:31:23,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:31:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:31:23,533 INFO L87 Difference]: Start difference. First operand 667 states and 849 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:25,605 INFO L93 Difference]: Finished difference Result 1480 states and 1821 transitions. [2022-11-22 00:31:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 00:31:25,606 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-22 00:31:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:25,611 INFO L225 Difference]: With dead ends: 1480 [2022-11-22 00:31:25,611 INFO L226 Difference]: Without dead ends: 1189 [2022-11-22 00:31:25,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:31:25,613 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 3221 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:25,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3221 Valid, 3876 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 00:31:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-11-22 00:31:25,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 426. [2022-11-22 00:31:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 410 states have (on average 1.2804878048780488) internal successors, (525), 425 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 525 transitions. [2022-11-22 00:31:25,746 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 525 transitions. Word has length 95 [2022-11-22 00:31:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:25,746 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 525 transitions. [2022-11-22 00:31:25,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 525 transitions. [2022-11-22 00:31:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-22 00:31:25,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:25,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:25,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:31:25,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:25,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1573191597, now seen corresponding path program 1 times [2022-11-22 00:31:25,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:25,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561524702] [2022-11-22 00:31:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:25,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:26,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:26,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561524702] [2022-11-22 00:31:26,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561524702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:26,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:26,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:26,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987549552] [2022-11-22 00:31:26,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:26,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:26,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:26,380 INFO L87 Difference]: Start difference. First operand 426 states and 525 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:27,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:27,903 INFO L93 Difference]: Finished difference Result 820 states and 1022 transitions. [2022-11-22 00:31:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:31:27,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-11-22 00:31:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:27,906 INFO L225 Difference]: With dead ends: 820 [2022-11-22 00:31:27,907 INFO L226 Difference]: Without dead ends: 741 [2022-11-22 00:31:27,908 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 [2022-11-22 00:31:27,908 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1971 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:27,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 1700 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 00:31:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-11-22 00:31:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 426. [2022-11-22 00:31:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 410 states have (on average 1.278048780487805) internal successors, (524), 425 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 524 transitions. [2022-11-22 00:31:28,061 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 524 transitions. Word has length 96 [2022-11-22 00:31:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:28,062 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 524 transitions. [2022-11-22 00:31:28,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 524 transitions. [2022-11-22 00:31:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-22 00:31:28,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:28,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:28,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:31:28,065 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash 474771949, now seen corresponding path program 1 times [2022-11-22 00:31:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:28,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230340196] [2022-11-22 00:31:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:28,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:28,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:28,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230340196] [2022-11-22 00:31:28,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230340196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:28,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:28,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749853517] [2022-11-22 00:31:28,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:28,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:28,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:28,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:28,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:28,640 INFO L87 Difference]: Start difference. First operand 426 states and 524 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:30,215 INFO L93 Difference]: Finished difference Result 867 states and 1083 transitions. [2022-11-22 00:31:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:31:30,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-11-22 00:31:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:30,221 INFO L225 Difference]: With dead ends: 867 [2022-11-22 00:31:30,221 INFO L226 Difference]: Without dead ends: 745 [2022-11-22 00:31:30,222 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 [2022-11-22 00:31:30,223 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 2049 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:30,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 2286 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 00:31:30,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-22 00:31:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 426. [2022-11-22 00:31:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 410 states have (on average 1.275609756097561) internal successors, (523), 425 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 523 transitions. [2022-11-22 00:31:30,348 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 523 transitions. Word has length 96 [2022-11-22 00:31:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:30,348 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 523 transitions. [2022-11-22 00:31:30,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 523 transitions. [2022-11-22 00:31:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 00:31:30,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:30,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:30,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:31:30,351 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:30,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash 372640941, now seen corresponding path program 1 times [2022-11-22 00:31:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914096164] [2022-11-22 00:31:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:30,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:30,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914096164] [2022-11-22 00:31:30,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914096164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:30,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:30,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:30,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028851448] [2022-11-22 00:31:30,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:30,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:30,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:30,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:30,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:30,830 INFO L87 Difference]: Start difference. First operand 426 states and 523 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:32,378 INFO L93 Difference]: Finished difference Result 793 states and 982 transitions. [2022-11-22 00:31:32,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:32,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-22 00:31:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:32,383 INFO L225 Difference]: With dead ends: 793 [2022-11-22 00:31:32,383 INFO L226 Difference]: Without dead ends: 733 [2022-11-22 00:31:32,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:31:32,385 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 2184 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:32,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2184 Valid, 1499 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 00:31:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-22 00:31:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 426. [2022-11-22 00:31:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 410 states have (on average 1.273170731707317) internal successors, (522), 425 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 522 transitions. [2022-11-22 00:31:32,510 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 522 transitions. Word has length 97 [2022-11-22 00:31:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:32,511 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 522 transitions. [2022-11-22 00:31:32,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 522 transitions. [2022-11-22 00:31:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 00:31:32,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:32,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:32,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:31:32,514 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:32,514 INFO L85 PathProgramCache]: Analyzing trace with hash 789636914, now seen corresponding path program 1 times [2022-11-22 00:31:32,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:32,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944307325] [2022-11-22 00:31:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:32,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:32,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:32,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944307325] [2022-11-22 00:31:32,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944307325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:32,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:32,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868951874] [2022-11-22 00:31:32,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:32,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:32,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:32,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:32,973 INFO L87 Difference]: Start difference. First operand 426 states and 522 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:34,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:34,295 INFO L93 Difference]: Finished difference Result 773 states and 946 transitions. [2022-11-22 00:31:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:34,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-22 00:31:34,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:34,299 INFO L225 Difference]: With dead ends: 773 [2022-11-22 00:31:34,299 INFO L226 Difference]: Without dead ends: 717 [2022-11-22 00:31:34,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:31:34,300 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1497 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:34,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1422 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:31:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-11-22 00:31:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 426. [2022-11-22 00:31:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 410 states have (on average 1.2707317073170732) internal successors, (521), 425 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:34,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 521 transitions. [2022-11-22 00:31:34,427 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 521 transitions. Word has length 98 [2022-11-22 00:31:34,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:34,427 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 521 transitions. [2022-11-22 00:31:34,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:34,428 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 521 transitions. [2022-11-22 00:31:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 00:31:34,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:34,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:34,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 00:31:34,430 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:34,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:34,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1142407794, now seen corresponding path program 1 times [2022-11-22 00:31:34,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:34,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512404810] [2022-11-22 00:31:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:34,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:34,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:34,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512404810] [2022-11-22 00:31:34,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512404810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:34,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:34,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:34,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729783605] [2022-11-22 00:31:34,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:34,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:34,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:34,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:34,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:34,811 INFO L87 Difference]: Start difference. First operand 426 states and 521 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:36,237 INFO L93 Difference]: Finished difference Result 882 states and 1094 transitions. [2022-11-22 00:31:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:36,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-22 00:31:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:36,241 INFO L225 Difference]: With dead ends: 882 [2022-11-22 00:31:36,242 INFO L226 Difference]: Without dead ends: 745 [2022-11-22 00:31:36,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:31:36,244 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 2043 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:36,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 1789 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:31:36,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-22 00:31:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 426. [2022-11-22 00:31:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 410 states have (on average 1.2682926829268293) internal successors, (520), 425 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 520 transitions. [2022-11-22 00:31:36,359 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 520 transitions. Word has length 98 [2022-11-22 00:31:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:36,360 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 520 transitions. [2022-11-22 00:31:36,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 520 transitions. [2022-11-22 00:31:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 00:31:36,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:36,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:36,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 00:31:36,363 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:36,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1331918194, now seen corresponding path program 1 times [2022-11-22 00:31:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:36,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741935641] [2022-11-22 00:31:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:36,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:36,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741935641] [2022-11-22 00:31:36,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741935641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:36,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:36,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364544162] [2022-11-22 00:31:36,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:36,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:36,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:36,865 INFO L87 Difference]: Start difference. First operand 426 states and 520 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:38,246 INFO L93 Difference]: Finished difference Result 829 states and 1025 transitions. [2022-11-22 00:31:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:31:38,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-22 00:31:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:38,250 INFO L225 Difference]: With dead ends: 829 [2022-11-22 00:31:38,250 INFO L226 Difference]: Without dead ends: 741 [2022-11-22 00:31:38,251 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 [2022-11-22 00:31:38,251 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 1920 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:38,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1920 Valid, 2275 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:31:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-11-22 00:31:38,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 426. [2022-11-22 00:31:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 410 states have (on average 1.2658536585365854) internal successors, (519), 425 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 519 transitions. [2022-11-22 00:31:38,378 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 519 transitions. Word has length 98 [2022-11-22 00:31:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:38,379 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 519 transitions. [2022-11-22 00:31:38,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 519 transitions. [2022-11-22 00:31:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 00:31:38,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:38,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:38,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 00:31:38,382 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:38,382 INFO L85 PathProgramCache]: Analyzing trace with hash 826135346, now seen corresponding path program 1 times [2022-11-22 00:31:38,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:38,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040750546] [2022-11-22 00:31:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:38,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:38,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:38,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040750546] [2022-11-22 00:31:38,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040750546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:38,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:38,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:38,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546407888] [2022-11-22 00:31:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:38,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:38,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:38,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:38,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:38,776 INFO L87 Difference]: Start difference. First operand 426 states and 519 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:40,455 INFO L93 Difference]: Finished difference Result 797 states and 982 transitions. [2022-11-22 00:31:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:40,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-22 00:31:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:40,461 INFO L225 Difference]: With dead ends: 797 [2022-11-22 00:31:40,461 INFO L226 Difference]: Without dead ends: 733 [2022-11-22 00:31:40,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:31:40,463 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 2037 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:40,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 1649 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 00:31:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-22 00:31:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 426. [2022-11-22 00:31:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 410 states have (on average 1.2634146341463415) internal successors, (518), 425 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 518 transitions. [2022-11-22 00:31:40,583 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 518 transitions. Word has length 98 [2022-11-22 00:31:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:40,584 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 518 transitions. [2022-11-22 00:31:40,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 518 transitions. [2022-11-22 00:31:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 00:31:40,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:40,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:40,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 00:31:40,587 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:40,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash -658364686, now seen corresponding path program 1 times [2022-11-22 00:31:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:40,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259734038] [2022-11-22 00:31:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:40,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:41,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:41,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259734038] [2022-11-22 00:31:41,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259734038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:41,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:41,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:31:41,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758913657] [2022-11-22 00:31:41,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:41,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:31:41,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:41,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:31:41,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:31:41,384 INFO L87 Difference]: Start difference. First operand 426 states and 518 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:44,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:44,607 INFO L93 Difference]: Finished difference Result 1172 states and 1466 transitions. [2022-11-22 00:31:44,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 00:31:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-22 00:31:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:44,612 INFO L225 Difference]: With dead ends: 1172 [2022-11-22 00:31:44,613 INFO L226 Difference]: Without dead ends: 1084 [2022-11-22 00:31:44,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:31:44,615 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 3977 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3977 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:44,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3977 Valid, 2230 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:31:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-11-22 00:31:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 431. [2022-11-22 00:31:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 415 states have (on average 1.2602409638554217) internal successors, (523), 430 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 523 transitions. [2022-11-22 00:31:44,853 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 523 transitions. Word has length 98 [2022-11-22 00:31:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:44,853 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 523 transitions. [2022-11-22 00:31:44,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 523 transitions. [2022-11-22 00:31:44,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 00:31:44,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:44,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:44,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 00:31:44,855 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:44,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:44,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1884558386, now seen corresponding path program 1 times [2022-11-22 00:31:44,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:44,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019390357] [2022-11-22 00:31:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:44,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:45,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:45,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019390357] [2022-11-22 00:31:45,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019390357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:45,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:45,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:45,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481617266] [2022-11-22 00:31:45,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:45,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:45,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:45,313 INFO L87 Difference]: Start difference. First operand 431 states and 523 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:47,083 INFO L93 Difference]: Finished difference Result 802 states and 985 transitions. [2022-11-22 00:31:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:47,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-22 00:31:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:47,086 INFO L225 Difference]: With dead ends: 802 [2022-11-22 00:31:47,086 INFO L226 Difference]: Without dead ends: 738 [2022-11-22 00:31:47,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:31:47,088 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 2032 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:47,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2032 Valid, 1651 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 00:31:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-11-22 00:31:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 431. [2022-11-22 00:31:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 415 states have (on average 1.2578313253012048) internal successors, (522), 430 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 522 transitions. [2022-11-22 00:31:47,261 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 522 transitions. Word has length 98 [2022-11-22 00:31:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:47,261 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 522 transitions. [2022-11-22 00:31:47,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 522 transitions. [2022-11-22 00:31:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 00:31:47,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:47,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:47,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 00:31:47,263 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:47,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash -401498382, now seen corresponding path program 1 times [2022-11-22 00:31:47,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:47,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101473132] [2022-11-22 00:31:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:47,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:47,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:47,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101473132] [2022-11-22 00:31:47,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101473132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:47,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:47,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:31:47,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903593115] [2022-11-22 00:31:47,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:31:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:31:47,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:31:47,954 INFO L87 Difference]: Start difference. First operand 431 states and 522 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:50,928 INFO L93 Difference]: Finished difference Result 1097 states and 1369 transitions. [2022-11-22 00:31:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 00:31:50,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-22 00:31:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:50,936 INFO L225 Difference]: With dead ends: 1097 [2022-11-22 00:31:50,936 INFO L226 Difference]: Without dead ends: 1033 [2022-11-22 00:31:50,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:31:50,938 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 4283 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:50,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4283 Valid, 1863 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 00:31:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-11-22 00:31:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 436. [2022-11-22 00:31:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 420 states have (on average 1.2547619047619047) internal successors, (527), 435 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 527 transitions. [2022-11-22 00:31:51,113 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 527 transitions. Word has length 98 [2022-11-22 00:31:51,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:51,113 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 527 transitions. [2022-11-22 00:31:51,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 527 transitions. [2022-11-22 00:31:51,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 00:31:51,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:51,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:51,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 00:31:51,115 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:51,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:51,116 INFO L85 PathProgramCache]: Analyzing trace with hash 726734154, now seen corresponding path program 1 times [2022-11-22 00:31:51,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:51,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147055954] [2022-11-22 00:31:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:51,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:51,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:51,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147055954] [2022-11-22 00:31:51,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147055954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:51,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:51,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453954038] [2022-11-22 00:31:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:51,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:51,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:51,574 INFO L87 Difference]: Start difference. First operand 436 states and 527 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:53,218 INFO L93 Difference]: Finished difference Result 777 states and 945 transitions. [2022-11-22 00:31:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:53,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-22 00:31:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:53,223 INFO L225 Difference]: With dead ends: 777 [2022-11-22 00:31:53,223 INFO L226 Difference]: Without dead ends: 726 [2022-11-22 00:31:53,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:31:53,224 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 2104 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2104 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:53,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2104 Valid, 1481 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:31:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-11-22 00:31:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 435. [2022-11-22 00:31:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 419 states have (on average 1.2529832935560858) internal successors, (525), 434 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 525 transitions. [2022-11-22 00:31:53,422 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 525 transitions. Word has length 98 [2022-11-22 00:31:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:53,422 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 525 transitions. [2022-11-22 00:31:53,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 525 transitions. [2022-11-22 00:31:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:31:53,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:53,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:53,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 00:31:53,425 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash 729259016, now seen corresponding path program 1 times [2022-11-22 00:31:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:53,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277542025] [2022-11-22 00:31:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:53,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:53,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:53,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277542025] [2022-11-22 00:31:53,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277542025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:53,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:53,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:53,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770137985] [2022-11-22 00:31:53,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:53,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:53,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:53,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:53,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:53,868 INFO L87 Difference]: Start difference. First operand 435 states and 525 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:55,565 INFO L93 Difference]: Finished difference Result 779 states and 946 transitions. [2022-11-22 00:31:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:55,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-22 00:31:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:55,568 INFO L225 Difference]: With dead ends: 779 [2022-11-22 00:31:55,568 INFO L226 Difference]: Without dead ends: 726 [2022-11-22 00:31:55,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:31:55,569 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 2098 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:55,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 1480 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:31:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-11-22 00:31:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 435. [2022-11-22 00:31:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 419 states have (on average 1.2505966587112172) internal successors, (524), 434 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 524 transitions. [2022-11-22 00:31:55,746 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 524 transitions. Word has length 99 [2022-11-22 00:31:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:55,746 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 524 transitions. [2022-11-22 00:31:55,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:55,747 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 524 transitions. [2022-11-22 00:31:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:31:55,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:55,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-22 00:31:55,749 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1775150408, now seen corresponding path program 1 times [2022-11-22 00:31:55,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:55,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467706787] [2022-11-22 00:31:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:55,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:56,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:56,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:56,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467706787] [2022-11-22 00:31:56,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467706787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:56,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:56,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:56,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265012234] [2022-11-22 00:31:56,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:56,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:56,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:56,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:56,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:56,188 INFO L87 Difference]: Start difference. First operand 435 states and 524 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:57,796 INFO L93 Difference]: Finished difference Result 779 states and 945 transitions. [2022-11-22 00:31:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:57,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-22 00:31:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:57,799 INFO L225 Difference]: With dead ends: 779 [2022-11-22 00:31:57,799 INFO L226 Difference]: Without dead ends: 726 [2022-11-22 00:31:57,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:31:57,800 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 2121 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:57,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 1460 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:31:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-11-22 00:31:57,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 435. [2022-11-22 00:31:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 419 states have (on average 1.2482100238663485) internal successors, (523), 434 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 523 transitions. [2022-11-22 00:31:57,965 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 523 transitions. Word has length 99 [2022-11-22 00:31:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:57,965 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 523 transitions. [2022-11-22 00:31:57,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 523 transitions. [2022-11-22 00:31:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:31:57,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:57,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:57,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-22 00:31:57,967 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:31:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash -8770564, now seen corresponding path program 1 times [2022-11-22 00:31:57,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:57,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283542338] [2022-11-22 00:31:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:58,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:58,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283542338] [2022-11-22 00:31:58,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283542338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:58,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:58,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:31:58,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101861427] [2022-11-22 00:31:58,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:58,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:31:58,305 INFO L87 Difference]: Start difference. First operand 435 states and 523 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:31:59,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:59,988 INFO L93 Difference]: Finished difference Result 833 states and 1018 transitions. [2022-11-22 00:31:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:31:59,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-22 00:31:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:59,994 INFO L225 Difference]: With dead ends: 833 [2022-11-22 00:31:59,994 INFO L226 Difference]: Without dead ends: 745 [2022-11-22 00:31:59,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:31:59,995 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1806 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:59,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1806 Valid, 1948 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:31:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-22 00:32:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 430. [2022-11-22 00:32:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 414 states have (on average 1.248792270531401) internal successors, (517), 429 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 517 transitions. [2022-11-22 00:32:00,150 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 517 transitions. Word has length 99 [2022-11-22 00:32:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:00,151 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 517 transitions. [2022-11-22 00:32:00,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:00,151 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 517 transitions. [2022-11-22 00:32:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:32:00,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:00,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:00,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-22 00:32:00,153 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:00,154 INFO L85 PathProgramCache]: Analyzing trace with hash -371844056, now seen corresponding path program 1 times [2022-11-22 00:32:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:00,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883346423] [2022-11-22 00:32:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:00,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:00,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883346423] [2022-11-22 00:32:00,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883346423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:00,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:00,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:32:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991410388] [2022-11-22 00:32:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:00,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:00,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:00,494 INFO L87 Difference]: Start difference. First operand 430 states and 517 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:02,100 INFO L93 Difference]: Finished difference Result 774 states and 938 transitions. [2022-11-22 00:32:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-22 00:32:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:02,107 INFO L225 Difference]: With dead ends: 774 [2022-11-22 00:32:02,108 INFO L226 Difference]: Without dead ends: 721 [2022-11-22 00:32:02,108 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 [2022-11-22 00:32:02,110 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1994 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:02,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 1566 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:32:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-11-22 00:32:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 430. [2022-11-22 00:32:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 414 states have (on average 1.2463768115942029) internal successors, (516), 429 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 516 transitions. [2022-11-22 00:32:02,389 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 516 transitions. Word has length 99 [2022-11-22 00:32:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:02,390 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 516 transitions. [2022-11-22 00:32:02,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 516 transitions. [2022-11-22 00:32:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:32:02,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:02,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:02,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-22 00:32:02,393 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash 30970824, now seen corresponding path program 1 times [2022-11-22 00:32:02,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:02,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893951638] [2022-11-22 00:32:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:02,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:02,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893951638] [2022-11-22 00:32:02,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893951638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:02,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:02,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:32:02,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134685771] [2022-11-22 00:32:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:02,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:02,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:02,739 INFO L87 Difference]: Start difference. First operand 430 states and 516 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:04,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:04,380 INFO L93 Difference]: Finished difference Result 774 states and 937 transitions. [2022-11-22 00:32:04,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:04,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-22 00:32:04,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:04,383 INFO L225 Difference]: With dead ends: 774 [2022-11-22 00:32:04,383 INFO L226 Difference]: Without dead ends: 721 [2022-11-22 00:32:04,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:32:04,384 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1392 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:04,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 1543 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:32:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-11-22 00:32:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 430. [2022-11-22 00:32:04,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 414 states have (on average 1.2439613526570048) internal successors, (515), 429 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 515 transitions. [2022-11-22 00:32:04,561 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 515 transitions. Word has length 99 [2022-11-22 00:32:04,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:04,562 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 515 transitions. [2022-11-22 00:32:04,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 515 transitions. [2022-11-22 00:32:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:32:04,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:04,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-22 00:32:04,564 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:04,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash -169539486, now seen corresponding path program 1 times [2022-11-22 00:32:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:04,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164223536] [2022-11-22 00:32:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:04,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:04,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:04,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164223536] [2022-11-22 00:32:04,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164223536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:04,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:04,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:32:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945463482] [2022-11-22 00:32:04,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:04,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:04,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:04,901 INFO L87 Difference]: Start difference. First operand 430 states and 515 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:06,523 INFO L93 Difference]: Finished difference Result 796 states and 970 transitions. [2022-11-22 00:32:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:06,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-22 00:32:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:06,527 INFO L225 Difference]: With dead ends: 796 [2022-11-22 00:32:06,527 INFO L226 Difference]: Without dead ends: 732 [2022-11-22 00:32:06,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:32:06,529 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1886 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:06,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 1798 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:32:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-11-22 00:32:06,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 425. [2022-11-22 00:32:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 409 states have (on average 1.2444987775061125) internal successors, (509), 424 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 509 transitions. [2022-11-22 00:32:06,784 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 509 transitions. Word has length 99 [2022-11-22 00:32:06,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:06,784 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 509 transitions. [2022-11-22 00:32:06,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 509 transitions. [2022-11-22 00:32:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:32:06,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:06,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-22 00:32:06,786 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:06,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1106978857, now seen corresponding path program 1 times [2022-11-22 00:32:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:06,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80705206] [2022-11-22 00:32:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:06,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:07,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80705206] [2022-11-22 00:32:07,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80705206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:07,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:07,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:32:07,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828599503] [2022-11-22 00:32:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:07,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:07,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:07,220 INFO L87 Difference]: Start difference. First operand 425 states and 509 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:09,064 INFO L93 Difference]: Finished difference Result 801 states and 974 transitions. [2022-11-22 00:32:09,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:09,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-22 00:32:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:09,067 INFO L225 Difference]: With dead ends: 801 [2022-11-22 00:32:09,067 INFO L226 Difference]: Without dead ends: 732 [2022-11-22 00:32:09,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:32:09,069 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1923 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:09,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 1765 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 00:32:09,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-11-22 00:32:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 425. [2022-11-22 00:32:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 409 states have (on average 1.2420537897310513) internal successors, (508), 424 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:09,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 508 transitions. [2022-11-22 00:32:09,249 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 508 transitions. Word has length 100 [2022-11-22 00:32:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:09,249 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 508 transitions. [2022-11-22 00:32:09,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:09,250 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 508 transitions. [2022-11-22 00:32:09,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:32:09,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:09,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:09,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-22 00:32:09,252 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:09,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:09,252 INFO L85 PathProgramCache]: Analyzing trace with hash 235319639, now seen corresponding path program 1 times [2022-11-22 00:32:09,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:09,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164757564] [2022-11-22 00:32:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:09,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:09,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164757564] [2022-11-22 00:32:09,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164757564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:09,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:09,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:32:09,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807953420] [2022-11-22 00:32:09,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:09,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:32:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:32:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:32:09,957 INFO L87 Difference]: Start difference. First operand 425 states and 508 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:13,512 INFO L93 Difference]: Finished difference Result 1177 states and 1457 transitions. [2022-11-22 00:32:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 00:32:13,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-22 00:32:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:13,514 INFO L225 Difference]: With dead ends: 1177 [2022-11-22 00:32:13,514 INFO L226 Difference]: Without dead ends: 1083 [2022-11-22 00:32:13,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:32:13,515 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 3856 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3856 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:13,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3856 Valid, 2790 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:32:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-11-22 00:32:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 430. [2022-11-22 00:32:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 414 states have (on average 1.2391304347826086) internal successors, (513), 429 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 513 transitions. [2022-11-22 00:32:13,770 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 513 transitions. Word has length 100 [2022-11-22 00:32:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:13,770 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 513 transitions. [2022-11-22 00:32:13,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 513 transitions. [2022-11-22 00:32:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:32:13,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:13,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:13,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-22 00:32:13,772 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:13,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1499979031, now seen corresponding path program 1 times [2022-11-22 00:32:13,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:13,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845310414] [2022-11-22 00:32:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:13,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:14,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845310414] [2022-11-22 00:32:14,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845310414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:14,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:14,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:32:14,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878470769] [2022-11-22 00:32:14,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:14,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:14,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:14,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:14,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:14,083 INFO L87 Difference]: Start difference. First operand 430 states and 513 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:15,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:15,730 INFO L93 Difference]: Finished difference Result 777 states and 936 transitions. [2022-11-22 00:32:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-22 00:32:15,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:15,732 INFO L225 Difference]: With dead ends: 777 [2022-11-22 00:32:15,732 INFO L226 Difference]: Without dead ends: 721 [2022-11-22 00:32:15,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:32:15,733 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1383 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:15,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 1620 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:32:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-11-22 00:32:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 430. [2022-11-22 00:32:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 414 states have (on average 1.2367149758454106) internal successors, (512), 429 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 512 transitions. [2022-11-22 00:32:15,922 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 512 transitions. Word has length 100 [2022-11-22 00:32:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:15,923 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 512 transitions. [2022-11-22 00:32:15,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 512 transitions. [2022-11-22 00:32:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:32:15,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:15,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:15,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-22 00:32:15,925 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1759021801, now seen corresponding path program 1 times [2022-11-22 00:32:15,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:15,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997791672] [2022-11-22 00:32:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:15,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:16,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:16,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997791672] [2022-11-22 00:32:16,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997791672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:16,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:16,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:32:16,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490308581] [2022-11-22 00:32:16,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:16,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:32:16,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:16,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:32:16,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:32:16,574 INFO L87 Difference]: Start difference. First operand 430 states and 512 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:20,009 INFO L93 Difference]: Finished difference Result 1100 states and 1358 transitions. [2022-11-22 00:32:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 00:32:20,012 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-22 00:32:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:20,014 INFO L225 Difference]: With dead ends: 1100 [2022-11-22 00:32:20,014 INFO L226 Difference]: Without dead ends: 1031 [2022-11-22 00:32:20,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:32:20,015 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 4291 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:20,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4291 Valid, 2357 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 00:32:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-22 00:32:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 435. [2022-11-22 00:32:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 419 states have (on average 1.233890214797136) internal successors, (517), 434 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 517 transitions. [2022-11-22 00:32:20,215 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 517 transitions. Word has length 100 [2022-11-22 00:32:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:20,216 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 517 transitions. [2022-11-22 00:32:20,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 517 transitions. [2022-11-22 00:32:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:32:20,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:20,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:20,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-22 00:32:20,218 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2111792681, now seen corresponding path program 1 times [2022-11-22 00:32:20,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:20,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954007591] [2022-11-22 00:32:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:20,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:20,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:20,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954007591] [2022-11-22 00:32:20,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954007591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:20,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:20,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:32:20,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728110689] [2022-11-22 00:32:20,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:20,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:20,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:20,556 INFO L87 Difference]: Start difference. First operand 435 states and 517 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:22,245 INFO L93 Difference]: Finished difference Result 782 states and 939 transitions. [2022-11-22 00:32:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:22,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-22 00:32:22,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:22,247 INFO L225 Difference]: With dead ends: 782 [2022-11-22 00:32:22,247 INFO L226 Difference]: Without dead ends: 726 [2022-11-22 00:32:22,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:32:22,249 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1985 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:22,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1985 Valid, 1602 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:32:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-11-22 00:32:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 435. [2022-11-22 00:32:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 419 states have (on average 1.2315035799522673) internal successors, (516), 434 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 516 transitions. [2022-11-22 00:32:22,455 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 516 transitions. Word has length 100 [2022-11-22 00:32:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:22,456 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 516 transitions. [2022-11-22 00:32:22,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 516 transitions. [2022-11-22 00:32:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:32:22,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:22,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:22,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-22 00:32:22,458 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:22,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1562580969, now seen corresponding path program 1 times [2022-11-22 00:32:22,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:22,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606001472] [2022-11-22 00:32:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:22,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:23,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:23,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606001472] [2022-11-22 00:32:23,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606001472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:23,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:23,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:32:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689792883] [2022-11-22 00:32:23,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:23,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:32:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:23,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:32:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:32:23,075 INFO L87 Difference]: Start difference. First operand 435 states and 516 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:26,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:26,384 INFO L93 Difference]: Finished difference Result 1050 states and 1288 transitions. [2022-11-22 00:32:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 00:32:26,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-22 00:32:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:26,386 INFO L225 Difference]: With dead ends: 1050 [2022-11-22 00:32:26,386 INFO L226 Difference]: Without dead ends: 1031 [2022-11-22 00:32:26,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:32:26,387 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 3973 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3973 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:26,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3973 Valid, 1956 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 00:32:26,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-22 00:32:26,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 440. [2022-11-22 00:32:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 424 states have (on average 1.2287735849056605) internal successors, (521), 439 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 521 transitions. [2022-11-22 00:32:26,586 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 521 transitions. Word has length 100 [2022-11-22 00:32:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:26,587 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 521 transitions. [2022-11-22 00:32:26,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:26,587 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 521 transitions. [2022-11-22 00:32:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:32:26,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:26,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:26,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-22 00:32:26,588 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:26,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:26,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1915351849, now seen corresponding path program 1 times [2022-11-22 00:32:26,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:26,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646902651] [2022-11-22 00:32:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:26,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:26,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:26,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646902651] [2022-11-22 00:32:26,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646902651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:26,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:26,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:32:26,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412640506] [2022-11-22 00:32:26,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:26,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:26,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:26,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:26,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:26,947 INFO L87 Difference]: Start difference. First operand 440 states and 521 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:28,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:28,737 INFO L93 Difference]: Finished difference Result 737 states and 877 transitions. [2022-11-22 00:32:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-22 00:32:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:28,739 INFO L225 Difference]: With dead ends: 737 [2022-11-22 00:32:28,739 INFO L226 Difference]: Without dead ends: 731 [2022-11-22 00:32:28,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:32:28,740 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1981 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:28,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 1603 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:32:28,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-11-22 00:32:28,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 440. [2022-11-22 00:32:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 424 states have (on average 1.2264150943396226) internal successors, (520), 439 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 520 transitions. [2022-11-22 00:32:28,940 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 520 transitions. Word has length 100 [2022-11-22 00:32:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:28,940 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 520 transitions. [2022-11-22 00:32:28,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 520 transitions. [2022-11-22 00:32:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:32:28,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:28,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:28,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-22 00:32:28,942 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:28,942 INFO L85 PathProgramCache]: Analyzing trace with hash 450158487, now seen corresponding path program 1 times [2022-11-22 00:32:28,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:28,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313444328] [2022-11-22 00:32:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:28,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:29,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:29,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313444328] [2022-11-22 00:32:29,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313444328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:29,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:29,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:32:29,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727849801] [2022-11-22 00:32:29,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:29,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:29,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:29,185 INFO L87 Difference]: Start difference. First operand 440 states and 520 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:30,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:30,939 INFO L93 Difference]: Finished difference Result 737 states and 876 transitions. [2022-11-22 00:32:30,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:30,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-22 00:32:30,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:30,941 INFO L225 Difference]: With dead ends: 737 [2022-11-22 00:32:30,941 INFO L226 Difference]: Without dead ends: 731 [2022-11-22 00:32:30,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:32:30,942 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1329 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:30,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 1643 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:32:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-11-22 00:32:31,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 440. [2022-11-22 00:32:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 424 states have (on average 1.224056603773585) internal successors, (519), 439 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 519 transitions. [2022-11-22 00:32:31,144 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 519 transitions. Word has length 100 [2022-11-22 00:32:31,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:31,144 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 519 transitions. [2022-11-22 00:32:31,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:31,144 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 519 transitions. [2022-11-22 00:32:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:32:31,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:31,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:31,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-22 00:32:31,146 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:31,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:31,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1722148873, now seen corresponding path program 1 times [2022-11-22 00:32:31,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:31,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672842867] [2022-11-22 00:32:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:31,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:31,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:31,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672842867] [2022-11-22 00:32:31,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672842867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:31,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:31,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:32:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131563651] [2022-11-22 00:32:31,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:31,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:31,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:31,474 INFO L87 Difference]: Start difference. First operand 440 states and 519 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:33,324 INFO L93 Difference]: Finished difference Result 737 states and 874 transitions. [2022-11-22 00:32:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-22 00:32:33,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:33,326 INFO L225 Difference]: With dead ends: 737 [2022-11-22 00:32:33,326 INFO L226 Difference]: Without dead ends: 731 [2022-11-22 00:32:33,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:32:33,327 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1327 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:33,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1643 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:32:33,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-11-22 00:32:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 440. [2022-11-22 00:32:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 424 states have (on average 1.221698113207547) internal successors, (518), 439 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 518 transitions. [2022-11-22 00:32:33,556 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 518 transitions. Word has length 100 [2022-11-22 00:32:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:33,557 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 518 transitions. [2022-11-22 00:32:33,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 518 transitions. [2022-11-22 00:32:33,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-22 00:32:33,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:33,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:33,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-22 00:32:33,558 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:33,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:33,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1565469443, now seen corresponding path program 1 times [2022-11-22 00:32:33,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:33,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522671361] [2022-11-22 00:32:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:33,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:37,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:37,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522671361] [2022-11-22 00:32:37,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522671361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:37,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:37,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-22 00:32:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919500702] [2022-11-22 00:32:37,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:37,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-22 00:32:37,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:37,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-22 00:32:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 00:32:37,217 INFO L87 Difference]: Start difference. First operand 440 states and 518 transitions. Second operand has 35 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:56,245 INFO L93 Difference]: Finished difference Result 1987 states and 2358 transitions. [2022-11-22 00:32:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-22 00:32:56,246 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-11-22 00:32:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:56,248 INFO L225 Difference]: With dead ends: 1987 [2022-11-22 00:32:56,248 INFO L226 Difference]: Without dead ends: 1936 [2022-11-22 00:32:56,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=566, Invalid=3466, Unknown=0, NotChecked=0, Total=4032 [2022-11-22 00:32:56,250 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 5525 mSDsluCounter, 28570 mSDsCounter, 0 mSdLazyCounter, 15968 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5525 SdHoareTripleChecker+Valid, 29976 SdHoareTripleChecker+Invalid, 15980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:56,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5525 Valid, 29976 Invalid, 15980 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12 Valid, 15968 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-11-22 00:32:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2022-11-22 00:32:56,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 467. [2022-11-22 00:32:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.2239467849223946) internal successors, (552), 466 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 552 transitions. [2022-11-22 00:32:56,565 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 552 transitions. Word has length 101 [2022-11-22 00:32:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:56,565 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 552 transitions. [2022-11-22 00:32:56,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 552 transitions. [2022-11-22 00:32:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-22 00:32:56,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:56,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:56,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-22 00:32:56,567 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:32:56,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1170317597, now seen corresponding path program 1 times [2022-11-22 00:32:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:56,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451870535] [2022-11-22 00:32:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:56,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:57,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:57,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451870535] [2022-11-22 00:32:57,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451870535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:57,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:57,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 00:32:57,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632554794] [2022-11-22 00:32:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:57,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 00:32:57,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:57,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 00:32:57,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:32:57,495 INFO L87 Difference]: Start difference. First operand 467 states and 552 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:00,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:00,945 INFO L93 Difference]: Finished difference Result 1311 states and 1606 transitions. [2022-11-22 00:33:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 00:33:00,945 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-11-22 00:33:00,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:00,947 INFO L225 Difference]: With dead ends: 1311 [2022-11-22 00:33:00,947 INFO L226 Difference]: Without dead ends: 1186 [2022-11-22 00:33:00,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-22 00:33:00,948 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 3182 mSDsluCounter, 5341 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3182 SdHoareTripleChecker+Valid, 6291 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:00,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3182 Valid, 6291 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:33:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-11-22 00:33:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 392. [2022-11-22 00:33:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 380 states have (on average 1.2131578947368422) internal successors, (461), 391 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 461 transitions. [2022-11-22 00:33:01,225 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 461 transitions. Word has length 101 [2022-11-22 00:33:01,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:01,225 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 461 transitions. [2022-11-22 00:33:01,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 461 transitions. [2022-11-22 00:33:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-22 00:33:01,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:01,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:01,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-22 00:33:01,227 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1364738908, now seen corresponding path program 1 times [2022-11-22 00:33:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:01,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418188173] [2022-11-22 00:33:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:01,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:01,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:01,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418188173] [2022-11-22 00:33:01,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418188173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:01,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:01,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:33:01,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434166278] [2022-11-22 00:33:01,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:01,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:33:01,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:33:01,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:33:01,628 INFO L87 Difference]: Start difference. First operand 392 states and 461 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:03,852 INFO L93 Difference]: Finished difference Result 801 states and 964 transitions. [2022-11-22 00:33:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:33:03,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-11-22 00:33:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:03,856 INFO L225 Difference]: With dead ends: 801 [2022-11-22 00:33:03,856 INFO L226 Difference]: Without dead ends: 707 [2022-11-22 00:33:03,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:33:03,858 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1037 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:03,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1775 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:33:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-11-22 00:33:04,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 387. [2022-11-22 00:33:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 375 states have (on average 1.2133333333333334) internal successors, (455), 386 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 455 transitions. [2022-11-22 00:33:04,203 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 455 transitions. Word has length 101 [2022-11-22 00:33:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:04,203 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 455 transitions. [2022-11-22 00:33:04,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 455 transitions. [2022-11-22 00:33:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-22 00:33:04,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:04,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:04,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-22 00:33:04,205 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:04,205 INFO L85 PathProgramCache]: Analyzing trace with hash 330504227, now seen corresponding path program 1 times [2022-11-22 00:33:04,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:04,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152208887] [2022-11-22 00:33:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:04,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:05,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:05,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152208887] [2022-11-22 00:33:05,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152208887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:05,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:05,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:33:05,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47351939] [2022-11-22 00:33:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:05,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:33:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:05,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:33:05,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:33:05,524 INFO L87 Difference]: Start difference. First operand 387 states and 455 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:08,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:08,812 INFO L93 Difference]: Finished difference Result 1038 states and 1255 transitions. [2022-11-22 00:33:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 00:33:08,814 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-11-22 00:33:08,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:08,816 INFO L225 Difference]: With dead ends: 1038 [2022-11-22 00:33:08,816 INFO L226 Difference]: Without dead ends: 855 [2022-11-22 00:33:08,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2022-11-22 00:33:08,817 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 2603 mSDsluCounter, 6787 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 7526 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:08,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2603 Valid, 7526 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 00:33:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-22 00:33:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 332. [2022-11-22 00:33:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 321 states have (on average 1.1993769470404985) internal successors, (385), 331 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 385 transitions. [2022-11-22 00:33:09,087 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 385 transitions. Word has length 101 [2022-11-22 00:33:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:09,088 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 385 transitions. [2022-11-22 00:33:09,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 385 transitions. [2022-11-22 00:33:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:33:09,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:09,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:09,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-22 00:33:09,090 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1639927908, now seen corresponding path program 1 times [2022-11-22 00:33:09,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:09,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335253935] [2022-11-22 00:33:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:09,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:09,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335253935] [2022-11-22 00:33:09,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335253935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:09,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:09,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 00:33:09,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51093972] [2022-11-22 00:33:09,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:09,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:33:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:33:09,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:33:09,869 INFO L87 Difference]: Start difference. First operand 332 states and 385 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:12,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:12,049 INFO L93 Difference]: Finished difference Result 736 states and 892 transitions. [2022-11-22 00:33:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:33:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-11-22 00:33:12,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:12,051 INFO L225 Difference]: With dead ends: 736 [2022-11-22 00:33:12,051 INFO L226 Difference]: Without dead ends: 669 [2022-11-22 00:33:12,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:33:12,052 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 1608 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:12,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 3241 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:33:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-11-22 00:33:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 315. [2022-11-22 00:33:12,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 306 states have (on average 1.1928104575163399) internal successors, (365), 314 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 365 transitions. [2022-11-22 00:33:12,295 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 365 transitions. Word has length 102 [2022-11-22 00:33:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:12,295 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 365 transitions. [2022-11-22 00:33:12,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 365 transitions. [2022-11-22 00:33:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:33:12,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:12,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:12,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-22 00:33:12,297 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:12,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:12,298 INFO L85 PathProgramCache]: Analyzing trace with hash 782557276, now seen corresponding path program 1 times [2022-11-22 00:33:12,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:12,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131958974] [2022-11-22 00:33:12,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:12,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:13,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:13,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131958974] [2022-11-22 00:33:13,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131958974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:13,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:13,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 00:33:13,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179357482] [2022-11-22 00:33:13,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:13,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:33:13,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:13,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:33:13,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:33:13,033 INFO L87 Difference]: Start difference. First operand 315 states and 365 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:15,312 INFO L93 Difference]: Finished difference Result 706 states and 860 transitions. [2022-11-22 00:33:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:33:15,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-11-22 00:33:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:15,314 INFO L225 Difference]: With dead ends: 706 [2022-11-22 00:33:15,314 INFO L226 Difference]: Without dead ends: 612 [2022-11-22 00:33:15,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:33:15,315 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1664 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:15,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1664 Valid, 2790 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:33:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-22 00:33:15,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 252. [2022-11-22 00:33:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 246 states have (on average 1.170731707317073) internal successors, (288), 251 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 288 transitions. [2022-11-22 00:33:15,575 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 288 transitions. Word has length 102 [2022-11-22 00:33:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:15,575 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 288 transitions. [2022-11-22 00:33:15,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 288 transitions. [2022-11-22 00:33:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:33:15,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:15,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:15,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-22 00:33:15,576 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:15,577 INFO L85 PathProgramCache]: Analyzing trace with hash -733643047, now seen corresponding path program 1 times [2022-11-22 00:33:15,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:15,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257936203] [2022-11-22 00:33:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:15,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:16,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:16,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257936203] [2022-11-22 00:33:16,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257936203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:16,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:16,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 00:33:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090754890] [2022-11-22 00:33:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:16,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:33:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:33:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:33:16,329 INFO L87 Difference]: Start difference. First operand 252 states and 288 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:17,818 INFO L93 Difference]: Finished difference Result 442 states and 517 transitions. [2022-11-22 00:33:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:33:17,819 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-11-22 00:33:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:17,820 INFO L225 Difference]: With dead ends: 442 [2022-11-22 00:33:17,820 INFO L226 Difference]: Without dead ends: 380 [2022-11-22 00:33:17,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:33:17,821 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1240 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:17,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1800 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:33:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-22 00:33:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 240. [2022-11-22 00:33:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.1659574468085105) internal successors, (274), 239 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 274 transitions. [2022-11-22 00:33:18,044 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 274 transitions. Word has length 102 [2022-11-22 00:33:18,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:18,044 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 274 transitions. [2022-11-22 00:33:18,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 274 transitions. [2022-11-22 00:33:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:33:18,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:18,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:18,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-22 00:33:18,045 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:18,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:18,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1835606412, now seen corresponding path program 1 times [2022-11-22 00:33:18,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:18,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382486555] [2022-11-22 00:33:18,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:18,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:18,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:18,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382486555] [2022-11-22 00:33:18,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382486555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:18,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:18,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:33:18,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782682512] [2022-11-22 00:33:18,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:18,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:33:18,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:18,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:33:18,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:33:18,358 INFO L87 Difference]: Start difference. First operand 240 states and 274 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:19,455 INFO L93 Difference]: Finished difference Result 361 states and 417 transitions. [2022-11-22 00:33:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:33:19,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-11-22 00:33:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:19,456 INFO L225 Difference]: With dead ends: 361 [2022-11-22 00:33:19,456 INFO L226 Difference]: Without dead ends: 342 [2022-11-22 00:33:19,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:33:19,458 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 644 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:19,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 771 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:33:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-22 00:33:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 235. [2022-11-22 00:33:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 230 states have (on average 1.1652173913043478) internal successors, (268), 234 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 268 transitions. [2022-11-22 00:33:19,710 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 268 transitions. Word has length 102 [2022-11-22 00:33:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:19,710 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 268 transitions. [2022-11-22 00:33:19,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:19,711 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 268 transitions. [2022-11-22 00:33:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:33:19,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:19,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:19,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-22 00:33:19,711 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash -416637735, now seen corresponding path program 1 times [2022-11-22 00:33:19,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:19,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484517737] [2022-11-22 00:33:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:19,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:20,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:20,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484517737] [2022-11-22 00:33:20,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484517737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:20,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:20,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 00:33:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829724060] [2022-11-22 00:33:20,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:20,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:33:20,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:20,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:33:20,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:33:20,941 INFO L87 Difference]: Start difference. First operand 235 states and 268 transitions. Second operand has 16 states, 16 states have (on average 6.375) internal successors, (102), 15 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:23,642 INFO L93 Difference]: Finished difference Result 565 states and 658 transitions. [2022-11-22 00:33:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 00:33:23,642 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 15 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-11-22 00:33:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:23,643 INFO L225 Difference]: With dead ends: 565 [2022-11-22 00:33:23,643 INFO L226 Difference]: Without dead ends: 514 [2022-11-22 00:33:23,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:33:23,645 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 2372 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:23,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 2085 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:33:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-22 00:33:23,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 264. [2022-11-22 00:33:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 259 states have (on average 1.1737451737451738) internal successors, (304), 263 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 304 transitions. [2022-11-22 00:33:23,925 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 304 transitions. Word has length 102 [2022-11-22 00:33:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:23,925 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 304 transitions. [2022-11-22 00:33:23,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 15 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 304 transitions. [2022-11-22 00:33:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:33:23,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:23,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:23,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-22 00:33:23,926 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:23,927 INFO L85 PathProgramCache]: Analyzing trace with hash -384185607, now seen corresponding path program 1 times [2022-11-22 00:33:23,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:23,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461257139] [2022-11-22 00:33:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:23,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:24,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:24,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461257139] [2022-11-22 00:33:24,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461257139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:24,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:24,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:33:24,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104135153] [2022-11-22 00:33:24,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:24,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:33:24,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:24,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:33:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:33:24,685 INFO L87 Difference]: Start difference. First operand 264 states and 304 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:25,923 INFO L93 Difference]: Finished difference Result 426 states and 503 transitions. [2022-11-22 00:33:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 00:33:25,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-11-22 00:33:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:25,925 INFO L225 Difference]: With dead ends: 426 [2022-11-22 00:33:25,925 INFO L226 Difference]: Without dead ends: 338 [2022-11-22 00:33:25,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:33:25,926 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 919 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:25,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1922 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:33:25,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-22 00:33:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 208. [2022-11-22 00:33:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.1519607843137254) internal successors, (235), 207 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 235 transitions. [2022-11-22 00:33:26,172 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 235 transitions. Word has length 102 [2022-11-22 00:33:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:26,172 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 235 transitions. [2022-11-22 00:33:26,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 235 transitions. [2022-11-22 00:33:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-22 00:33:26,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:26,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:26,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-22 00:33:26,174 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:26,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1888325114, now seen corresponding path program 1 times [2022-11-22 00:33:26,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:26,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63820943] [2022-11-22 00:33:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:26,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:27,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:27,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63820943] [2022-11-22 00:33:27,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63820943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:27,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:27,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 00:33:27,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762838456] [2022-11-22 00:33:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:27,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:33:27,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:27,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:33:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:33:27,404 INFO L87 Difference]: Start difference. First operand 208 states and 235 transitions. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:30,075 INFO L93 Difference]: Finished difference Result 472 states and 540 transitions. [2022-11-22 00:33:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 00:33:30,076 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-11-22 00:33:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:30,077 INFO L225 Difference]: With dead ends: 472 [2022-11-22 00:33:30,077 INFO L226 Difference]: Without dead ends: 468 [2022-11-22 00:33:30,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:33:30,078 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 2165 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2165 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:30,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2165 Valid, 1801 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:33:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-22 00:33:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 240. [2022-11-22 00:33:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 1.1567796610169492) internal successors, (273), 239 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 273 transitions. [2022-11-22 00:33:30,362 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 273 transitions. Word has length 103 [2022-11-22 00:33:30,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:30,362 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 273 transitions. [2022-11-22 00:33:30,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:30,362 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 273 transitions. [2022-11-22 00:33:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-22 00:33:30,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:30,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:30,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-22 00:33:30,364 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash 335461180, now seen corresponding path program 1 times [2022-11-22 00:33:30,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:30,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968153225] [2022-11-22 00:33:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:30,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:31,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:31,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968153225] [2022-11-22 00:33:31,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968153225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:31,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:31,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:33:31,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74124768] [2022-11-22 00:33:31,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:33:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:33:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:33:31,005 INFO L87 Difference]: Start difference. First operand 240 states and 273 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:34,811 INFO L93 Difference]: Finished difference Result 811 states and 999 transitions. [2022-11-22 00:33:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 00:33:34,812 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-11-22 00:33:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:34,814 INFO L225 Difference]: With dead ends: 811 [2022-11-22 00:33:34,814 INFO L226 Difference]: Without dead ends: 741 [2022-11-22 00:33:34,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2022-11-22 00:33:34,815 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 2326 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:34,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2326 Valid, 1397 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 00:33:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-11-22 00:33:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 245. [2022-11-22 00:33:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 241 states have (on average 1.1535269709543567) internal successors, (278), 244 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 278 transitions. [2022-11-22 00:33:35,105 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 278 transitions. Word has length 104 [2022-11-22 00:33:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:35,105 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 278 transitions. [2022-11-22 00:33:35,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 278 transitions. [2022-11-22 00:33:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-22 00:33:35,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:35,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:35,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-22 00:33:35,106 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:35,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:35,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1807672498, now seen corresponding path program 1 times [2022-11-22 00:33:35,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:35,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227530269] [2022-11-22 00:33:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:35,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:35,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:35,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227530269] [2022-11-22 00:33:35,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227530269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:35,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:35,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:33:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535672810] [2022-11-22 00:33:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:35,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:33:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:33:35,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:33:35,855 INFO L87 Difference]: Start difference. First operand 245 states and 278 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:38,191 INFO L93 Difference]: Finished difference Result 636 states and 762 transitions. [2022-11-22 00:33:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 00:33:38,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-11-22 00:33:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:38,193 INFO L225 Difference]: With dead ends: 636 [2022-11-22 00:33:38,193 INFO L226 Difference]: Without dead ends: 573 [2022-11-22 00:33:38,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-11-22 00:33:38,194 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 836 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 3399 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:38,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 3399 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:33:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-22 00:33:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 175. [2022-11-22 00:33:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 1.1445086705202312) internal successors, (198), 174 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2022-11-22 00:33:38,429 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 104 [2022-11-22 00:33:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:38,429 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2022-11-22 00:33:38,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2022-11-22 00:33:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 00:33:38,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:38,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:38,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-22 00:33:38,431 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1644170665, now seen corresponding path program 1 times [2022-11-22 00:33:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:38,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295570150] [2022-11-22 00:33:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:38,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:38,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:38,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295570150] [2022-11-22 00:33:38,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295570150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:38,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:38,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:33:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660494952] [2022-11-22 00:33:38,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:33:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:33:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:33:38,824 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:39,931 INFO L93 Difference]: Finished difference Result 320 states and 378 transitions. [2022-11-22 00:33:39,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:33:39,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-11-22 00:33:39,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:39,933 INFO L225 Difference]: With dead ends: 320 [2022-11-22 00:33:39,933 INFO L226 Difference]: Without dead ends: 250 [2022-11-22 00:33:39,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:33:39,936 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 670 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:39,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 535 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:33:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-22 00:33:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 170. [2022-11-22 00:33:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 1.1428571428571428) internal successors, (192), 169 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 192 transitions. [2022-11-22 00:33:40,165 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 192 transitions. Word has length 105 [2022-11-22 00:33:40,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:40,165 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 192 transitions. [2022-11-22 00:33:40,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 192 transitions. [2022-11-22 00:33:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-22 00:33:40,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:40,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:40,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-22 00:33:40,166 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:40,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:40,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1176555649, now seen corresponding path program 1 times [2022-11-22 00:33:40,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:40,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623536752] [2022-11-22 00:33:40,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:40,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:43,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:43,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623536752] [2022-11-22 00:33:43,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623536752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:43,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:43,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-22 00:33:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662827566] [2022-11-22 00:33:43,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:43,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-22 00:33:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-22 00:33:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 00:33:43,583 INFO L87 Difference]: Start difference. First operand 170 states and 192 transitions. Second operand has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 32 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:55,327 INFO L93 Difference]: Finished difference Result 815 states and 982 transitions. [2022-11-22 00:33:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-22 00:33:55,328 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 32 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-11-22 00:33:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:55,330 INFO L225 Difference]: With dead ends: 815 [2022-11-22 00:33:55,331 INFO L226 Difference]: Without dead ends: 809 [2022-11-22 00:33:55,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=479, Invalid=3061, Unknown=0, NotChecked=0, Total=3540 [2022-11-22 00:33:55,332 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 2501 mSDsluCounter, 12456 mSDsCounter, 0 mSdLazyCounter, 5725 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 13076 SdHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:55,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2501 Valid, 13076 Invalid, 5725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5725 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-22 00:33:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-11-22 00:33:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 201. [2022-11-22 00:33:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 199 states have (on average 1.150753768844221) internal successors, (229), 200 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 229 transitions. [2022-11-22 00:33:55,808 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 229 transitions. Word has length 106 [2022-11-22 00:33:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:55,808 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 229 transitions. [2022-11-22 00:33:55,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 32 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 229 transitions. [2022-11-22 00:33:55,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-22 00:33:55,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:55,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:55,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-22 00:33:55,809 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:55,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:55,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1589162411, now seen corresponding path program 1 times [2022-11-22 00:33:55,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:55,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40992921] [2022-11-22 00:33:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:55,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:56,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:56,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40992921] [2022-11-22 00:33:56,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40992921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:56,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:56,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 00:33:56,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372306638] [2022-11-22 00:33:56,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:56,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:33:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:33:56,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:33:56,539 INFO L87 Difference]: Start difference. First operand 201 states and 229 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:58,336 INFO L93 Difference]: Finished difference Result 382 states and 458 transitions. [2022-11-22 00:33:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:33:58,337 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-11-22 00:33:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:58,338 INFO L225 Difference]: With dead ends: 382 [2022-11-22 00:33:58,338 INFO L226 Difference]: Without dead ends: 376 [2022-11-22 00:33:58,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-11-22 00:33:58,339 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 536 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:58,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 1662 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:33:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-22 00:33:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 164. [2022-11-22 00:33:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.1411042944785277) internal successors, (186), 163 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 186 transitions. [2022-11-22 00:33:58,587 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 186 transitions. Word has length 107 [2022-11-22 00:33:58,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:58,588 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 186 transitions. [2022-11-22 00:33:58,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 186 transitions. [2022-11-22 00:33:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-22 00:33:58,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:58,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:58,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-22 00:33:58,589 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash 542522682, now seen corresponding path program 1 times [2022-11-22 00:33:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:58,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702847606] [2022-11-22 00:33:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:58,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:58,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:58,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702847606] [2022-11-22 00:33:58,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702847606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:58,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:58,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:33:58,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298436113] [2022-11-22 00:33:58,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:58,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:58,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:58,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:58,740 INFO L87 Difference]: Start difference. First operand 164 states and 186 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:59,267 INFO L93 Difference]: Finished difference Result 264 states and 316 transitions. [2022-11-22 00:33:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:59,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-11-22 00:33:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:59,268 INFO L225 Difference]: With dead ends: 264 [2022-11-22 00:33:59,269 INFO L226 Difference]: Without dead ends: 214 [2022-11-22 00:33:59,269 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 [2022-11-22 00:33:59,269 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 74 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:59,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 350 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:33:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-22 00:33:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 208. [2022-11-22 00:33:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.178743961352657) internal successors, (244), 207 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 244 transitions. [2022-11-22 00:33:59,683 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 244 transitions. Word has length 127 [2022-11-22 00:33:59,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:59,684 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 244 transitions. [2022-11-22 00:33:59,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 244 transitions. [2022-11-22 00:33:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-22 00:33:59,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:59,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:59,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-22 00:33:59,685 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:33:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:59,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1561890481, now seen corresponding path program 1 times [2022-11-22 00:33:59,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:59,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505592580] [2022-11-22 00:33:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:59,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:59,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:59,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505592580] [2022-11-22 00:33:59,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505592580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:59,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:59,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:33:59,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855173126] [2022-11-22 00:33:59,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:59,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:59,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:59,842 INFO L87 Difference]: Start difference. First operand 208 states and 244 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:00,739 INFO L93 Difference]: Finished difference Result 396 states and 490 transitions. [2022-11-22 00:34:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:00,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-11-22 00:34:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:00,740 INFO L225 Difference]: With dead ends: 396 [2022-11-22 00:34:00,740 INFO L226 Difference]: Without dead ends: 302 [2022-11-22 00:34:00,741 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 [2022-11-22 00:34:00,741 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 67 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:00,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 351 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:00,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-22 00:34:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 292. [2022-11-22 00:34:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.2164948453608246) internal successors, (354), 291 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 354 transitions. [2022-11-22 00:34:01,488 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 354 transitions. Word has length 130 [2022-11-22 00:34:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:01,488 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 354 transitions. [2022-11-22 00:34:01,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 354 transitions. [2022-11-22 00:34:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 00:34:01,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:01,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:01,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-22 00:34:01,490 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:34:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1702240215, now seen corresponding path program 1 times [2022-11-22 00:34:01,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:01,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761268820] [2022-11-22 00:34:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:01,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:01,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:01,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761268820] [2022-11-22 00:34:01,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761268820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:01,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:01,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:34:01,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555762211] [2022-11-22 00:34:01,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:01,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:34:01,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:01,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:34:01,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:01,646 INFO L87 Difference]: Start difference. First operand 292 states and 354 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:03,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:03,166 INFO L93 Difference]: Finished difference Result 648 states and 820 transitions. [2022-11-22 00:34:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:03,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-11-22 00:34:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:03,168 INFO L225 Difference]: With dead ends: 648 [2022-11-22 00:34:03,168 INFO L226 Difference]: Without dead ends: 470 [2022-11-22 00:34:03,169 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 [2022-11-22 00:34:03,170 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 60 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:03,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 352 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:03,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-22 00:34:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 452. [2022-11-22 00:34:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.246119733924612) internal successors, (562), 451 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 562 transitions. [2022-11-22 00:34:04,397 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 562 transitions. Word has length 133 [2022-11-22 00:34:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:04,397 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 562 transitions. [2022-11-22 00:34:04,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 562 transitions. [2022-11-22 00:34:04,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-22 00:34:04,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:04,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:04,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-22 00:34:04,398 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:34:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:04,399 INFO L85 PathProgramCache]: Analyzing trace with hash -234773138, now seen corresponding path program 1 times [2022-11-22 00:34:04,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:04,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258387597] [2022-11-22 00:34:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:04,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:04,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258387597] [2022-11-22 00:34:04,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258387597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:04,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:04,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:34:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147287001] [2022-11-22 00:34:04,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:04,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:34:04,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:34:04,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:04,598 INFO L87 Difference]: Start difference. First operand 452 states and 562 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:07,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:07,163 INFO L93 Difference]: Finished difference Result 1128 states and 1444 transitions. [2022-11-22 00:34:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:07,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-11-22 00:34:07,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:07,165 INFO L225 Difference]: With dead ends: 1128 [2022-11-22 00:34:07,165 INFO L226 Difference]: Without dead ends: 790 [2022-11-22 00:34:07,166 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 [2022-11-22 00:34:07,166 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 53 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:07,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 353 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:34:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-11-22 00:34:09,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 756. [2022-11-22 00:34:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 1.2635761589403973) internal successors, (954), 755 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 954 transitions. [2022-11-22 00:34:09,472 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 954 transitions. Word has length 136 [2022-11-22 00:34:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:09,472 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 954 transitions. [2022-11-22 00:34:09,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 954 transitions. [2022-11-22 00:34:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-22 00:34:09,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:09,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:09,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-22 00:34:09,474 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:34:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash 314136240, now seen corresponding path program 1 times [2022-11-22 00:34:09,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:09,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957559597] [2022-11-22 00:34:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:09,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:09,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:09,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957559597] [2022-11-22 00:34:09,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957559597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:09,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:09,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:34:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856024119] [2022-11-22 00:34:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:09,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:34:09,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:34:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:09,635 INFO L87 Difference]: Start difference. First operand 756 states and 954 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:14,146 INFO L93 Difference]: Finished difference Result 2040 states and 2620 transitions. [2022-11-22 00:34:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:14,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-22 00:34:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:14,153 INFO L225 Difference]: With dead ends: 2040 [2022-11-22 00:34:14,153 INFO L226 Difference]: Without dead ends: 1398 [2022-11-22 00:34:14,154 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 [2022-11-22 00:34:14,155 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 46 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:14,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 354 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:34:14,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2022-11-22 00:34:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1332. [2022-11-22 00:34:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1331 states have (on average 1.2697220135236664) internal successors, (1690), 1331 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1690 transitions. [2022-11-22 00:34:18,915 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1690 transitions. Word has length 139 [2022-11-22 00:34:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:18,915 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 1690 transitions. [2022-11-22 00:34:18,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1690 transitions. [2022-11-22 00:34:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-22 00:34:18,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:18,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:18,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-22 00:34:18,918 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:34:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash -984784852, now seen corresponding path program 1 times [2022-11-22 00:34:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:18,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421048554] [2022-11-22 00:34:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:19,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:19,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421048554] [2022-11-22 00:34:19,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421048554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:19,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:19,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:34:19,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961306324] [2022-11-22 00:34:19,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:19,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:34:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:19,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:34:19,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:19,202 INFO L87 Difference]: Start difference. First operand 1332 states and 1690 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:28,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:28,493 INFO L93 Difference]: Finished difference Result 3768 states and 4828 transitions. [2022-11-22 00:34:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:28,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-11-22 00:34:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:28,496 INFO L225 Difference]: With dead ends: 3768 [2022-11-22 00:34:28,497 INFO L226 Difference]: Without dead ends: 2550 [2022-11-22 00:34:28,498 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 [2022-11-22 00:34:28,499 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 36 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:28,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 355 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:34:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2022-11-22 00:34:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2420. [2022-11-22 00:34:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 2419 states have (on average 1.267465894997933) internal successors, (3066), 2419 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3066 transitions. [2022-11-22 00:34:36,815 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3066 transitions. Word has length 142 [2022-11-22 00:34:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:36,815 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3066 transitions. [2022-11-22 00:34:36,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:36,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3066 transitions. [2022-11-22 00:34:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-22 00:34:36,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:36,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:36,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-22 00:34:36,816 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:34:36,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:36,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1300427539, now seen corresponding path program 1 times [2022-11-22 00:34:36,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:36,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792756732] [2022-11-22 00:34:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:36,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:36,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:36,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792756732] [2022-11-22 00:34:36,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792756732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:36,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:36,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 00:34:36,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16878577] [2022-11-22 00:34:36,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:36,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:34:36,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:36,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:34:36,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:34:36,991 INFO L87 Difference]: Start difference. First operand 2420 states and 3066 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:03,852 INFO L93 Difference]: Finished difference Result 9671 states and 12295 transitions. [2022-11-22 00:35:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:35:03,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-11-22 00:35:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:03,862 INFO L225 Difference]: With dead ends: 9671 [2022-11-22 00:35:03,862 INFO L226 Difference]: Without dead ends: 7365 [2022-11-22 00:35:03,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:35:03,867 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 1201 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:03,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 2172 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:35:03,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7365 states. [2022-11-22 00:35:16,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7365 to 3314. [2022-11-22 00:35:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 3313 states have (on average 1.2532447932387565) internal successors, (4152), 3313 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 4152 transitions. [2022-11-22 00:35:16,134 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 4152 transitions. Word has length 145 [2022-11-22 00:35:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:16,134 INFO L495 AbstractCegarLoop]: Abstraction has 3314 states and 4152 transitions. [2022-11-22 00:35:16,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 4152 transitions. [2022-11-22 00:35:16,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-22 00:35:16,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:16,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:16,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-22 00:35:16,137 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:35:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash -248915912, now seen corresponding path program 1 times [2022-11-22 00:35:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:16,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166767431] [2022-11-22 00:35:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:16,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:16,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:16,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166767431] [2022-11-22 00:35:16,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166767431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:16,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:16,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:16,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540538179] [2022-11-22 00:35:16,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:16,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:35:16,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:16,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:35:16,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:16,253 INFO L87 Difference]: Start difference. First operand 3314 states and 4152 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:36,603 INFO L93 Difference]: Finished difference Result 7892 states and 9912 transitions. [2022-11-22 00:35:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:35:36,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2022-11-22 00:35:36,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:36,610 INFO L225 Difference]: With dead ends: 7892 [2022-11-22 00:35:36,610 INFO L226 Difference]: Without dead ends: 4692 [2022-11-22 00:35:36,613 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 [2022-11-22 00:35:36,614 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 93 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:36,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 277 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:35:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4692 states. [2022-11-22 00:35:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4692 to 4690. [2022-11-22 00:35:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4689 states have (on average 1.2469609724888036) internal successors, (5847), 4689 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 5847 transitions. [2022-11-22 00:35:56,070 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 5847 transitions. Word has length 147 [2022-11-22 00:35:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:56,071 INFO L495 AbstractCegarLoop]: Abstraction has 4690 states and 5847 transitions. [2022-11-22 00:35:56,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 5847 transitions. [2022-11-22 00:35:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-22 00:35:56,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:56,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:56,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-22 00:35:56,072 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:35:56,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:56,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1640279179, now seen corresponding path program 1 times [2022-11-22 00:35:56,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:56,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560124463] [2022-11-22 00:35:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:56,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:56,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:56,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560124463] [2022-11-22 00:35:56,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560124463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:56,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:56,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255975981] [2022-11-22 00:35:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:35:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:56,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:35:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:56,169 INFO L87 Difference]: Start difference. First operand 4690 states and 5847 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:16,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:16,273 INFO L93 Difference]: Finished difference Result 9268 states and 11574 transitions. [2022-11-22 00:36:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:36:16,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2022-11-22 00:36:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:16,280 INFO L225 Difference]: With dead ends: 9268 [2022-11-22 00:36:16,280 INFO L226 Difference]: Without dead ends: 4692 [2022-11-22 00:36:16,284 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 [2022-11-22 00:36:16,284 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 35 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:16,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 283 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:36:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4692 states. [2022-11-22 00:36:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4692 to 4690. [2022-11-22 00:36:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4689 states have (on average 1.2467477074002986) internal successors, (5846), 4689 states have internal predecessors, (5846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 5846 transitions. [2022-11-22 00:36:35,242 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 5846 transitions. Word has length 147 [2022-11-22 00:36:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:35,242 INFO L495 AbstractCegarLoop]: Abstraction has 4690 states and 5846 transitions. [2022-11-22 00:36:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 5846 transitions. [2022-11-22 00:36:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-22 00:36:35,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:35,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:35,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-22 00:36:35,244 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:36:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:35,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1329687551, now seen corresponding path program 1 times [2022-11-22 00:36:35,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:35,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395988828] [2022-11-22 00:36:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:35,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:35,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:35,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395988828] [2022-11-22 00:36:35,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395988828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:35,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:35,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:36:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302248469] [2022-11-22 00:36:35,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:35,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:36:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:36:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:36:35,531 INFO L87 Difference]: Start difference. First operand 4690 states and 5846 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:37:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:03,465 INFO L93 Difference]: Finished difference Result 6563 states and 8139 transitions. [2022-11-22 00:37:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:37:03,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-22 00:37:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:03,474 INFO L225 Difference]: With dead ends: 6563 [2022-11-22 00:37:03,474 INFO L226 Difference]: Without dead ends: 6561 [2022-11-22 00:37:03,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:37:03,476 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 393 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:03,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1140 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:37:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6561 states. [2022-11-22 00:37:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6561 to 4690. [2022-11-22 00:37:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4689 states have (on average 1.2330987417359778) internal successors, (5782), 4689 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:37:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 5782 transitions. [2022-11-22 00:37:23,944 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 5782 transitions. Word has length 148 [2022-11-22 00:37:23,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:23,945 INFO L495 AbstractCegarLoop]: Abstraction has 4690 states and 5782 transitions. [2022-11-22 00:37:23,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:37:23,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 5782 transitions. [2022-11-22 00:37:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-22 00:37:23,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:23,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:37:23,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-22 00:37:23,947 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:37:23,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:23,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1799804197, now seen corresponding path program 1 times [2022-11-22 00:37:23,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:23,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977616865] [2022-11-22 00:37:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:23,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 00:37:24,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:24,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977616865] [2022-11-22 00:37:24,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977616865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:24,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:24,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 00:37:24,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974443495] [2022-11-22 00:37:24,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:24,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:37:24,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:37:24,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:37:24,682 INFO L87 Difference]: Start difference. First operand 4690 states and 5782 transitions. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:38:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:28,842 INFO L93 Difference]: Finished difference Result 19683 states and 24299 transitions. [2022-11-22 00:38:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 00:38:28,842 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 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 169 [2022-11-22 00:38:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:28,864 INFO L225 Difference]: With dead ends: 19683 [2022-11-22 00:38:28,864 INFO L226 Difference]: Without dead ends: 15100 [2022-11-22 00:38:28,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2022-11-22 00:38:28,873 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 2151 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:28,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2151 Valid, 854 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:38:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15100 states. [2022-11-22 00:38:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15100 to 4695. [2022-11-22 00:38:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4694 states have (on average 1.2328504473796336) internal successors, (5787), 4694 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:38:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 5787 transitions. [2022-11-22 00:38:47,971 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 5787 transitions. Word has length 169 [2022-11-22 00:38:47,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:47,972 INFO L495 AbstractCegarLoop]: Abstraction has 4695 states and 5787 transitions. [2022-11-22 00:38:47,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:38:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 5787 transitions. [2022-11-22 00:38:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-22 00:38:47,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:47,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:47,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-22 00:38:47,975 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:38:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash -980169615, now seen corresponding path program 1 times [2022-11-22 00:38:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729812755] [2022-11-22 00:38:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:47,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 00:38:48,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:48,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729812755] [2022-11-22 00:38:48,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729812755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:48,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:48,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:38:48,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080385678] [2022-11-22 00:38:48,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:48,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:38:48,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:38:48,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:38:48,622 INFO L87 Difference]: Start difference. First operand 4695 states and 5787 transitions. Second operand has 8 states, 8 states have (on average 19.75) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:39:20,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:20,141 INFO L93 Difference]: Finished difference Result 11811 states and 14586 transitions. [2022-11-22 00:39:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:39:20,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 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 170 [2022-11-22 00:39:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:20,150 INFO L225 Difference]: With dead ends: 11811 [2022-11-22 00:39:20,150 INFO L226 Difference]: Without dead ends: 7228 [2022-11-22 00:39:20,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:39:20,155 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 460 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:20,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 489 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:39:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7228 states. [2022-11-22 00:39:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7228 to 4690. [2022-11-22 00:39:40,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4689 states have (on average 1.2328854766474728) internal successors, (5781), 4689 states have internal predecessors, (5781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:39:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 5781 transitions. [2022-11-22 00:39:40,136 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 5781 transitions. Word has length 170 [2022-11-22 00:39:40,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:40,136 INFO L495 AbstractCegarLoop]: Abstraction has 4690 states and 5781 transitions. [2022-11-22 00:39:40,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:39:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 5781 transitions. [2022-11-22 00:39:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-22 00:39:40,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:40,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:39:40,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-22 00:39:40,139 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:39:40,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash -610918250, now seen corresponding path program 1 times [2022-11-22 00:39:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:40,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094358539] [2022-11-22 00:39:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 00:39:43,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:43,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094358539] [2022-11-22 00:39:43,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094358539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:43,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:39:43,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-22 00:39:43,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385755238] [2022-11-22 00:39:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:43,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-22 00:39:43,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-22 00:39:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2022-11-22 00:39:43,103 INFO L87 Difference]: Start difference. First operand 4690 states and 5781 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:40:48,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:40:48,722 INFO L93 Difference]: Finished difference Result 18157 states and 22473 transitions. [2022-11-22 00:40:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-22 00:40:48,722 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-11-22 00:40:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:40:48,742 INFO L225 Difference]: With dead ends: 18157 [2022-11-22 00:40:48,742 INFO L226 Difference]: Without dead ends: 13573 [2022-11-22 00:40:48,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=489, Invalid=2703, Unknown=0, NotChecked=0, Total=3192 [2022-11-22 00:40:48,748 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1856 mSDsluCounter, 8619 mSDsCounter, 0 mSdLazyCounter, 4658 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 9182 SdHoareTripleChecker+Invalid, 4673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:40:48,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 9182 Invalid, 4673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 4658 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 00:40:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13573 states. [2022-11-22 00:41:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13573 to 4720. [2022-11-22 00:41:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4719 states have (on average 1.2322525958889596) internal successors, (5815), 4719 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:41:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 5815 transitions. [2022-11-22 00:41:08,979 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 5815 transitions. Word has length 171 [2022-11-22 00:41:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:41:08,979 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 5815 transitions. [2022-11-22 00:41:08,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:41:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 5815 transitions. [2022-11-22 00:41:08,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-22 00:41:08,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:41:08,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:41:08,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-22 00:41:08,981 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 00:41:08,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:41:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1151730805, now seen corresponding path program 1 times [2022-11-22 00:41:08,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:41:08,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293605032] [2022-11-22 00:41:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:41:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:41:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:41:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:41:23,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:41:23,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293605032] [2022-11-22 00:41:23,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293605032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:41:23,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549519100] [2022-11-22 00:41:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:41:23,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:41:23,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:41:23,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:41:23,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3362b7-f04b-4561-8989-2542b2a0fa52/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:41:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:41:24,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1358 conjuncts, 113 conjunts are in the unsatisfiable core [2022-11-22 00:41:24,619 INFO L286 TraceCheckSpWp]: Computing forward predicates...