./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH --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 ea86972a210f89fc9e3e5afc5e01f00ca5c135dc207351adf2f98bafbd9a008a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:39:49,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:39:49,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:39:49,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:39:49,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:39:49,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:39:49,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:39:49,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:39:49,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:39:49,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:39:49,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:39:49,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:39:49,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:39:49,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:39:49,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:39:49,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:39:49,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:39:49,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:39:49,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:39:49,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:39:49,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:39:49,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:39:49,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:39:49,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:39:49,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:39:49,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:39:49,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:39:49,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:39:49,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:39:49,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:39:49,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:39:49,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:39:49,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:39:49,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:39:49,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:39:49,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:39:49,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:39:49,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:39:49,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:39:49,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:39:49,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:39:49,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:39:49,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:39:49,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:39:49,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:39:49,359 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:39:49,359 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:39:49,359 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:39:49,359 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:39:49,360 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:39:49,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:39:49,360 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:39:49,360 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:39:49,360 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:39:49,361 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:39:49,361 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:39:49,361 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:39:49,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:39:49,362 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:39:49,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:39:49,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:39:49,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:39:49,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:39:49,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:39:49,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:39:49,363 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:39:49,364 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:39:49,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:39:49,364 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:39:49,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:39:49,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:39:49,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:39:49,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:39:49,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:39:49,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:39:49,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:39:49,366 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:39:49,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:39:49,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:39:49,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:39:49,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:39:49,367 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea86972a210f89fc9e3e5afc5e01f00ca5c135dc207351adf2f98bafbd9a008a [2021-11-03 05:39:49,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:39:49,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:39:49,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:39:49,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:39:49,623 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:39:49,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-03 05:39:49,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/data/4c307161e/7347ba8e23044faca9bade14de3b1122/FLAG1aad860db [2021-11-03 05:39:50,728 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:39:50,728 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-03 05:39:50,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/data/4c307161e/7347ba8e23044faca9bade14de3b1122/FLAG1aad860db [2021-11-03 05:39:51,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/data/4c307161e/7347ba8e23044faca9bade14de3b1122 [2021-11-03 05:39:51,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:39:51,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:39:51,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:39:51,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:39:51,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:39:51,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:39:51" (1/1) ... [2021-11-03 05:39:51,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d469f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:51, skipping insertion in model container [2021-11-03 05:39:51,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:39:51" (1/1) ... [2021-11-03 05:39:51,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:39:51,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:39:52,937 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[147376,147389] [2021-11-03 05:39:53,250 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[216640,216653] [2021-11-03 05:39:53,418 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251269,251282] [2021-11-03 05:39:53,488 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[268618,268631] [2021-11-03 05:39:53,523 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[277293,277306] [2021-11-03 05:39:53,542 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[281602,281615] [2021-11-03 05:39:53,561 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[285742,285755] [2021-11-03 05:39:53,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[353833,353846] [2021-11-03 05:39:53,950 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[387694,387707] [2021-11-03 05:39:54,015 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[404802,404815] [2021-11-03 05:39:54,051 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[413481,413494] [2021-11-03 05:39:54,070 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[417791,417804] [2021-11-03 05:39:54,087 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[421932,421945] [2021-11-03 05:39:54,219 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[456014,456027] [2021-11-03 05:39:54,281 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[473125,473138] [2021-11-03 05:39:54,315 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[481792,481805] [2021-11-03 05:39:54,333 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[486086,486099] [2021-11-03 05:39:54,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[490211,490224] [2021-11-03 05:39:54,419 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[508509,508522] [2021-11-03 05:39:54,453 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[517152,517165] [2021-11-03 05:39:54,471 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[521446,521459] [2021-11-03 05:39:54,488 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[525571,525584] [2021-11-03 05:39:54,507 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[530444,530457] [2021-11-03 05:39:54,524 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[534605,534618] [2021-11-03 05:39:54,541 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[538899,538912] [2021-11-03 05:39:54,558 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[543024,543037] [2021-11-03 05:39:54,578 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[547518,547531] [2021-11-03 05:39:54,595 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[551659,551672] [2021-11-03 05:39:54,612 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[555964,555977] [2021-11-03 05:39:54,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:39:54,721 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:39:55,204 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[147376,147389] [2021-11-03 05:39:55,418 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[216640,216653] [2021-11-03 05:39:55,524 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251269,251282] [2021-11-03 05:39:55,588 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[268618,268631] [2021-11-03 05:39:55,616 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[277293,277306] [2021-11-03 05:39:55,631 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[281602,281615] [2021-11-03 05:39:55,646 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[285742,285755] [2021-11-03 05:39:55,885 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[353833,353846] [2021-11-03 05:39:55,984 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[387694,387707] [2021-11-03 05:39:56,038 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[404802,404815] [2021-11-03 05:39:56,070 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[413481,413494] [2021-11-03 05:39:56,084 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[417791,417804] [2021-11-03 05:39:56,098 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[421932,421945] [2021-11-03 05:39:56,196 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[456014,456027] [2021-11-03 05:39:56,247 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[473125,473138] [2021-11-03 05:39:56,275 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[481792,481805] [2021-11-03 05:39:56,289 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[486086,486099] [2021-11-03 05:39:56,304 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[490211,490224] [2021-11-03 05:39:56,361 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[508509,508522] [2021-11-03 05:39:56,389 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[517152,517165] [2021-11-03 05:39:56,404 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[521446,521459] [2021-11-03 05:39:56,417 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[525571,525584] [2021-11-03 05:39:56,433 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[530444,530457] [2021-11-03 05:39:56,446 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[534605,534618] [2021-11-03 05:39:56,458 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[538899,538912] [2021-11-03 05:39:56,469 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[543024,543037] [2021-11-03 05:39:56,484 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[547518,547531] [2021-11-03 05:39:56,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[551659,551672] [2021-11-03 05:39:56,512 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[555964,555977] [2021-11-03 05:39:56,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:39:56,591 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:39:56,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56 WrapperNode [2021-11-03 05:39:56,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:39:56,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:39:56,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:39:56,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:39:56,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:56,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:57,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:39:57,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:39:57,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:39:57,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:39:57,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:57,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:57,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:57,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:57,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:57,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:57,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:57,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:39:57,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:39:57,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:39:57,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:39:57,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (1/1) ... [2021-11-03 05:39:57,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:39:57,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:39:57,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:39:57,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:39:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:39:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:39:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:39:57,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:40:09,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:40:09,146 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:40:09,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:40:09 BoogieIcfgContainer [2021-11-03 05:40:09,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:40:09,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:40:09,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:40:09,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:40:09,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:39:51" (1/3) ... [2021-11-03 05:40:09,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b9f62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:40:09, skipping insertion in model container [2021-11-03 05:40:09,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:39:56" (2/3) ... [2021-11-03 05:40:09,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b9f62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:40:09, skipping insertion in model container [2021-11-03 05:40:09,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:40:09" (3/3) ... [2021-11-03 05:40:09,162 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-03 05:40:09,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:40:09,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-03 05:40:09,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:40:09,233 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:40:09,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-03 05:40:09,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 4942 states, 4912 states have (on average 1.8167752442996743) internal successors, (8924), 4941 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:09,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 05:40:09,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:09,468 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:09,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:09,476 INFO L85 PathProgramCache]: Analyzing trace with hash -647506740, now seen corresponding path program 1 times [2021-11-03 05:40:09,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:09,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824898420] [2021-11-03 05:40:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:09,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:10,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:10,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824898420] [2021-11-03 05:40:10,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824898420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:10,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:10,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:40:10,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829031693] [2021-11-03 05:40:10,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:40:10,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:40:10,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:40:10,079 INFO L87 Difference]: Start difference. First operand has 4942 states, 4912 states have (on average 1.8167752442996743) internal successors, (8924), 4941 states have internal predecessors, (8924), 0 states have call successors, (0), 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 20.0) internal successors, (100), 4 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) [2021-11-03 05:40:14,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:14,773 INFO L93 Difference]: Finished difference Result 6712 states and 11941 transitions. [2021-11-03 05:40:14,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:40:14,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 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 [2021-11-03 05:40:14,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:14,820 INFO L225 Difference]: With dead ends: 6712 [2021-11-03 05:40:14,820 INFO L226 Difference]: Without dead ends: 4428 [2021-11-03 05:40:14,833 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:40:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2021-11-03 05:40:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4428. [2021-11-03 05:40:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4399 states have (on average 1.320527392589225) internal successors, (5809), 4427 states have internal predecessors, (5809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 5809 transitions. [2021-11-03 05:40:15,066 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 5809 transitions. Word has length 100 [2021-11-03 05:40:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:15,067 INFO L470 AbstractCegarLoop]: Abstraction has 4428 states and 5809 transitions. [2021-11-03 05:40:15,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 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) [2021-11-03 05:40:15,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 5809 transitions. [2021-11-03 05:40:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 05:40:15,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:15,089 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:15,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:40:15,090 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:15,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1462923221, now seen corresponding path program 1 times [2021-11-03 05:40:15,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:15,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629684910] [2021-11-03 05:40:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:15,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:15,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:15,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629684910] [2021-11-03 05:40:15,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629684910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:15,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:15,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:40:15,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151174059] [2021-11-03 05:40:15,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:40:15,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:15,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:40:15,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:40:15,353 INFO L87 Difference]: Start difference. First operand 4428 states and 5809 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 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) [2021-11-03 05:40:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:18,225 INFO L93 Difference]: Finished difference Result 5424 states and 7099 transitions. [2021-11-03 05:40:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:40:18,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 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 [2021-11-03 05:40:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:18,244 INFO L225 Difference]: With dead ends: 5424 [2021-11-03 05:40:18,245 INFO L226 Difference]: Without dead ends: 3224 [2021-11-03 05:40:18,250 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:40:18,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2021-11-03 05:40:18,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3224. [2021-11-03 05:40:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3195 states have (on average 1.3408450704225352) internal successors, (4284), 3223 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4284 transitions. [2021-11-03 05:40:18,521 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4284 transitions. Word has length 100 [2021-11-03 05:40:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:18,523 INFO L470 AbstractCegarLoop]: Abstraction has 3224 states and 4284 transitions. [2021-11-03 05:40:18,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 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) [2021-11-03 05:40:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4284 transitions. [2021-11-03 05:40:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 05:40:18,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:18,534 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:18,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:40:18,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:18,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2017308726, now seen corresponding path program 1 times [2021-11-03 05:40:18,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:18,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436431242] [2021-11-03 05:40:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:18,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:18,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:18,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436431242] [2021-11-03 05:40:18,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436431242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:18,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:18,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:40:18,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704823523] [2021-11-03 05:40:18,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:40:18,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:40:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:40:18,722 INFO L87 Difference]: Start difference. First operand 3224 states and 4284 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 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) [2021-11-03 05:40:20,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:20,719 INFO L93 Difference]: Finished difference Result 3964 states and 5221 transitions. [2021-11-03 05:40:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:40:20,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 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 [2021-11-03 05:40:20,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:20,734 INFO L225 Difference]: With dead ends: 3964 [2021-11-03 05:40:20,734 INFO L226 Difference]: Without dead ends: 2372 [2021-11-03 05:40:20,737 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:40:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-11-03 05:40:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2372. [2021-11-03 05:40:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2343 states have (on average 1.3551002987622707) internal successors, (3175), 2371 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3175 transitions. [2021-11-03 05:40:20,827 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3175 transitions. Word has length 100 [2021-11-03 05:40:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:20,829 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 3175 transitions. [2021-11-03 05:40:20,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 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) [2021-11-03 05:40:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3175 transitions. [2021-11-03 05:40:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 05:40:20,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:20,842 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:20,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 05:40:20,842 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:20,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2095450160, now seen corresponding path program 1 times [2021-11-03 05:40:20,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:20,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213411216] [2021-11-03 05:40:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:20,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:20,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:20,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213411216] [2021-11-03 05:40:20,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213411216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:20,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:20,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:40:20,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530873648] [2021-11-03 05:40:20,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:40:20,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:40:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:40:21,002 INFO L87 Difference]: Start difference. First operand 2372 states and 3175 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 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) [2021-11-03 05:40:23,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:23,576 INFO L93 Difference]: Finished difference Result 4487 states and 6035 transitions. [2021-11-03 05:40:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:40:23,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 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 [2021-11-03 05:40:23,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:23,595 INFO L225 Difference]: With dead ends: 4487 [2021-11-03 05:40:23,595 INFO L226 Difference]: Without dead ends: 3279 [2021-11-03 05:40:23,598 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:40:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-11-03 05:40:23,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3105. [2021-11-03 05:40:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 3076 states have (on average 1.3901170351105332) internal successors, (4276), 3104 states have internal predecessors, (4276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:23,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4276 transitions. [2021-11-03 05:40:23,734 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4276 transitions. Word has length 101 [2021-11-03 05:40:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:23,735 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4276 transitions. [2021-11-03 05:40:23,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 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) [2021-11-03 05:40:23,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4276 transitions. [2021-11-03 05:40:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 05:40:23,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:23,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:23,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 05:40:23,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash 503693287, now seen corresponding path program 1 times [2021-11-03 05:40:23,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:23,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031812199] [2021-11-03 05:40:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:23,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:23,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:23,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031812199] [2021-11-03 05:40:23,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031812199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:23,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:23,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:40:23,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251978013] [2021-11-03 05:40:23,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:40:23,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:40:23,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:40:23,843 INFO L87 Difference]: Start difference. First operand 3105 states and 4276 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 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) [2021-11-03 05:40:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:25,591 INFO L93 Difference]: Finished difference Result 4495 states and 6192 transitions. [2021-11-03 05:40:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:40:25,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 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 [2021-11-03 05:40:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:25,607 INFO L225 Difference]: With dead ends: 4495 [2021-11-03 05:40:25,608 INFO L226 Difference]: Without dead ends: 2902 [2021-11-03 05:40:25,610 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:40:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2021-11-03 05:40:25,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2902. [2021-11-03 05:40:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2873 states have (on average 1.3988861816916116) internal successors, (4019), 2901 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4019 transitions. [2021-11-03 05:40:25,747 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4019 transitions. Word has length 102 [2021-11-03 05:40:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:25,748 INFO L470 AbstractCegarLoop]: Abstraction has 2902 states and 4019 transitions. [2021-11-03 05:40:25,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 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) [2021-11-03 05:40:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4019 transitions. [2021-11-03 05:40:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 05:40:25,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:25,756 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:25,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 05:40:25,756 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash -445604461, now seen corresponding path program 1 times [2021-11-03 05:40:25,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:25,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204342318] [2021-11-03 05:40:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:25,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:25,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:25,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204342318] [2021-11-03 05:40:25,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204342318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:25,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:25,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:40:25,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591749403] [2021-11-03 05:40:25,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:40:25,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:40:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:40:25,857 INFO L87 Difference]: Start difference. First operand 2902 states and 4019 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 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) [2021-11-03 05:40:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:26,938 INFO L93 Difference]: Finished difference Result 3227 states and 4379 transitions. [2021-11-03 05:40:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:40:26,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 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 [2021-11-03 05:40:26,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:26,946 INFO L225 Difference]: With dead ends: 3227 [2021-11-03 05:40:26,946 INFO L226 Difference]: Without dead ends: 1823 [2021-11-03 05:40:26,948 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:40:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2021-11-03 05:40:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1823. [2021-11-03 05:40:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1794 states have (on average 1.4057971014492754) internal successors, (2522), 1822 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2522 transitions. [2021-11-03 05:40:27,049 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2522 transitions. Word has length 103 [2021-11-03 05:40:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:27,050 INFO L470 AbstractCegarLoop]: Abstraction has 1823 states and 2522 transitions. [2021-11-03 05:40:27,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 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) [2021-11-03 05:40:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2522 transitions. [2021-11-03 05:40:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 05:40:27,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:27,055 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:27,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 05:40:27,056 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:27,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:27,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1151240352, now seen corresponding path program 1 times [2021-11-03 05:40:27,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:27,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401190226] [2021-11-03 05:40:27,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:27,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:27,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:27,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401190226] [2021-11-03 05:40:27,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401190226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:27,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:27,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:40:27,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472340659] [2021-11-03 05:40:27,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:40:27,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:27,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:40:27,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:40:27,152 INFO L87 Difference]: Start difference. First operand 1823 states and 2522 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 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) [2021-11-03 05:40:27,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:27,955 INFO L93 Difference]: Finished difference Result 2382 states and 3249 transitions. [2021-11-03 05:40:27,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:40:27,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 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 [2021-11-03 05:40:27,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:27,963 INFO L225 Difference]: With dead ends: 2382 [2021-11-03 05:40:27,963 INFO L226 Difference]: Without dead ends: 1441 [2021-11-03 05:40:27,965 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:40:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-11-03 05:40:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1441. [2021-11-03 05:40:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4157223796033995) internal successors, (1999), 1440 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1999 transitions. [2021-11-03 05:40:28,053 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1999 transitions. Word has length 104 [2021-11-03 05:40:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:28,054 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1999 transitions. [2021-11-03 05:40:28,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 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) [2021-11-03 05:40:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1999 transitions. [2021-11-03 05:40:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 05:40:28,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:28,058 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:28,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 05:40:28,058 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:28,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:28,059 INFO L85 PathProgramCache]: Analyzing trace with hash -858234937, now seen corresponding path program 1 times [2021-11-03 05:40:28,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:28,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173392351] [2021-11-03 05:40:28,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:28,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:28,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:28,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173392351] [2021-11-03 05:40:28,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173392351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:28,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:28,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:40:28,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554464129] [2021-11-03 05:40:28,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:40:28,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:28,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:40:28,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:40:28,267 INFO L87 Difference]: Start difference. First operand 1441 states and 1999 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) [2021-11-03 05:40:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:30,493 INFO L93 Difference]: Finished difference Result 2585 states and 3563 transitions. [2021-11-03 05:40:30,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:40:30,495 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 [2021-11-03 05:40:30,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:30,504 INFO L225 Difference]: With dead ends: 2585 [2021-11-03 05:40:30,504 INFO L226 Difference]: Without dead ends: 2431 [2021-11-03 05:40:30,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:40:30,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-03 05:40:30,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-03 05:40:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.415014164305949) internal successors, (1998), 1440 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1998 transitions. [2021-11-03 05:40:30,640 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1998 transitions. Word has length 105 [2021-11-03 05:40:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:30,641 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1998 transitions. [2021-11-03 05:40:30,641 INFO L471 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) [2021-11-03 05:40:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1998 transitions. [2021-11-03 05:40:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 05:40:30,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:30,645 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:30,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 05:40:30,646 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:30,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:30,646 INFO L85 PathProgramCache]: Analyzing trace with hash 831961254, now seen corresponding path program 1 times [2021-11-03 05:40:30,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:30,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874309490] [2021-11-03 05:40:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:30,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:30,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:30,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874309490] [2021-11-03 05:40:30,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874309490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:30,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:30,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:40:30,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109170942] [2021-11-03 05:40:30,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:40:30,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:30,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:40:30,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:40:30,882 INFO L87 Difference]: Start difference. First operand 1441 states and 1998 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 10 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) [2021-11-03 05:40:33,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:33,342 INFO L93 Difference]: Finished difference Result 2650 states and 3646 transitions. [2021-11-03 05:40:33,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:40:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 10 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 [2021-11-03 05:40:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:33,352 INFO L225 Difference]: With dead ends: 2650 [2021-11-03 05:40:33,352 INFO L226 Difference]: Without dead ends: 2501 [2021-11-03 05:40:33,353 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:40:33,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2021-11-03 05:40:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 1448. [2021-11-03 05:40:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1419 states have (on average 1.4150810429880196) internal successors, (2008), 1447 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2008 transitions. [2021-11-03 05:40:33,497 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2008 transitions. Word has length 105 [2021-11-03 05:40:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:33,498 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 2008 transitions. [2021-11-03 05:40:33,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 10 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) [2021-11-03 05:40:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2008 transitions. [2021-11-03 05:40:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 05:40:33,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:33,501 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:33,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 05:40:33,502 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:33,503 INFO L85 PathProgramCache]: Analyzing trace with hash -549268369, now seen corresponding path program 1 times [2021-11-03 05:40:33,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:33,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982734740] [2021-11-03 05:40:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:33,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:33,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:33,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982734740] [2021-11-03 05:40:33,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982734740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:33,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:33,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:40:33,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429855118] [2021-11-03 05:40:33,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:40:33,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:40:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:40:33,687 INFO L87 Difference]: Start difference. First operand 1448 states and 2008 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) [2021-11-03 05:40:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:36,039 INFO L93 Difference]: Finished difference Result 2399 states and 3292 transitions. [2021-11-03 05:40:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:40:36,040 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 [2021-11-03 05:40:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:36,050 INFO L225 Difference]: With dead ends: 2399 [2021-11-03 05:40:36,050 INFO L226 Difference]: Without dead ends: 2097 [2021-11-03 05:40:36,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:40:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-11-03 05:40:36,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1441. [2021-11-03 05:40:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4143059490084986) internal successors, (1997), 1440 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1997 transitions. [2021-11-03 05:40:36,203 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1997 transitions. Word has length 105 [2021-11-03 05:40:36,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:36,203 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1997 transitions. [2021-11-03 05:40:36,203 INFO L471 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) [2021-11-03 05:40:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1997 transitions. [2021-11-03 05:40:36,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 05:40:36,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:36,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:36,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 05:40:36,208 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:36,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1921332485, now seen corresponding path program 1 times [2021-11-03 05:40:36,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:36,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849182693] [2021-11-03 05:40:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:36,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:36,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:36,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849182693] [2021-11-03 05:40:36,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849182693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:36,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:36,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 05:40:36,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100807721] [2021-11-03 05:40:36,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:40:36,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:40:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:40:36,364 INFO L87 Difference]: Start difference. First operand 1441 states and 1997 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 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) [2021-11-03 05:40:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:37,719 INFO L93 Difference]: Finished difference Result 2419 states and 3214 transitions. [2021-11-03 05:40:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:40:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 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 [2021-11-03 05:40:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:37,724 INFO L225 Difference]: With dead ends: 2419 [2021-11-03 05:40:37,724 INFO L226 Difference]: Without dead ends: 1825 [2021-11-03 05:40:37,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:40:37,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2021-11-03 05:40:37,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1441. [2021-11-03 05:40:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4135977337110481) internal successors, (1996), 1440 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:37,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1996 transitions. [2021-11-03 05:40:37,840 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1996 transitions. Word has length 105 [2021-11-03 05:40:37,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:37,841 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1996 transitions. [2021-11-03 05:40:37,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 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) [2021-11-03 05:40:37,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1996 transitions. [2021-11-03 05:40:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:40:37,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:37,844 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:37,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 05:40:37,844 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash 845897430, now seen corresponding path program 1 times [2021-11-03 05:40:37,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:37,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861916152] [2021-11-03 05:40:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:37,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:37,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:37,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861916152] [2021-11-03 05:40:37,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861916152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:37,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:37,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:40:37,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490573998] [2021-11-03 05:40:37,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:40:37,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:40:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:40:37,991 INFO L87 Difference]: Start difference. First operand 1441 states and 1996 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:40:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:39,968 INFO L93 Difference]: Finished difference Result 2744 states and 3787 transitions. [2021-11-03 05:40:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:40:39,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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 [2021-11-03 05:40:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:39,975 INFO L225 Difference]: With dead ends: 2744 [2021-11-03 05:40:39,976 INFO L226 Difference]: Without dead ends: 2438 [2021-11-03 05:40:39,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:40:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-11-03 05:40:40,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1441. [2021-11-03 05:40:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4121813031161472) internal successors, (1994), 1440 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:40,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1994 transitions. [2021-11-03 05:40:40,116 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1994 transitions. Word has length 107 [2021-11-03 05:40:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:40,117 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1994 transitions. [2021-11-03 05:40:40,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:40:40,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1994 transitions. [2021-11-03 05:40:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:40:40,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:40,120 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:40,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 05:40:40,121 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash -888908894, now seen corresponding path program 1 times [2021-11-03 05:40:40,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:40,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403872338] [2021-11-03 05:40:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:40,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:40,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:40,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403872338] [2021-11-03 05:40:40,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403872338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:40,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:40,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:40:40,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400689108] [2021-11-03 05:40:40,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:40:40,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:40:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:40:40,257 INFO L87 Difference]: Start difference. First operand 1441 states and 1994 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:40:42,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:42,193 INFO L93 Difference]: Finished difference Result 2629 states and 3622 transitions. [2021-11-03 05:40:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:40:42,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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 [2021-11-03 05:40:42,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:42,197 INFO L225 Difference]: With dead ends: 2629 [2021-11-03 05:40:42,197 INFO L226 Difference]: Without dead ends: 2431 [2021-11-03 05:40:42,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:40:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-03 05:40:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-03 05:40:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4107648725212465) internal successors, (1992), 1440 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1992 transitions. [2021-11-03 05:40:42,315 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1992 transitions. Word has length 107 [2021-11-03 05:40:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:42,315 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1992 transitions. [2021-11-03 05:40:42,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:40:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1992 transitions. [2021-11-03 05:40:42,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:40:42,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:42,319 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:42,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 05:40:42,319 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:42,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1567068468, now seen corresponding path program 1 times [2021-11-03 05:40:42,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:42,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571420081] [2021-11-03 05:40:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:42,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:42,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:42,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571420081] [2021-11-03 05:40:42,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571420081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:42,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:42,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:40:42,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179296526] [2021-11-03 05:40:42,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:40:42,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:40:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:40:42,596 INFO L87 Difference]: Start difference. First operand 1441 states and 1992 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 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) [2021-11-03 05:40:44,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:44,916 INFO L93 Difference]: Finished difference Result 2669 states and 3591 transitions. [2021-11-03 05:40:44,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:40:44,916 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 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 [2021-11-03 05:40:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:44,921 INFO L225 Difference]: With dead ends: 2669 [2021-11-03 05:40:44,922 INFO L226 Difference]: Without dead ends: 2557 [2021-11-03 05:40:44,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:40:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2021-11-03 05:40:45,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 1487. [2021-11-03 05:40:45,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1458 states have (on average 1.4142661179698217) internal successors, (2062), 1486 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2062 transitions. [2021-11-03 05:40:45,044 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2062 transitions. Word has length 107 [2021-11-03 05:40:45,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:45,044 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 2062 transitions. [2021-11-03 05:40:45,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 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) [2021-11-03 05:40:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2062 transitions. [2021-11-03 05:40:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:40:45,046 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:45,046 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:45,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 05:40:45,046 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:45,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:45,047 INFO L85 PathProgramCache]: Analyzing trace with hash -816024022, now seen corresponding path program 1 times [2021-11-03 05:40:45,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:45,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495970075] [2021-11-03 05:40:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:45,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:45,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:45,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495970075] [2021-11-03 05:40:45,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495970075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:45,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:45,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:40:45,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215769882] [2021-11-03 05:40:45,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:40:45,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:40:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:40:45,228 INFO L87 Difference]: Start difference. First operand 1487 states and 2062 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 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) [2021-11-03 05:40:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:48,067 INFO L93 Difference]: Finished difference Result 2833 states and 3895 transitions. [2021-11-03 05:40:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:40:48,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 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 [2021-11-03 05:40:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:48,077 INFO L225 Difference]: With dead ends: 2833 [2021-11-03 05:40:48,077 INFO L226 Difference]: Without dead ends: 2615 [2021-11-03 05:40:48,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:40:48,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-11-03 05:40:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1487. [2021-11-03 05:40:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1458 states have (on average 1.412894375857339) internal successors, (2060), 1486 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2060 transitions. [2021-11-03 05:40:48,231 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2060 transitions. Word has length 107 [2021-11-03 05:40:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:48,231 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 2060 transitions. [2021-11-03 05:40:48,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 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) [2021-11-03 05:40:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2060 transitions. [2021-11-03 05:40:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:40:48,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:48,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:48,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 05:40:48,235 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:48,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1230522233, now seen corresponding path program 1 times [2021-11-03 05:40:48,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:48,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215071097] [2021-11-03 05:40:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:48,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:48,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:48,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215071097] [2021-11-03 05:40:48,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215071097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:48,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:48,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:40:48,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470835053] [2021-11-03 05:40:48,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:40:48,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:40:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:40:48,418 INFO L87 Difference]: Start difference. First operand 1487 states and 2060 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 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) [2021-11-03 05:40:51,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:51,123 INFO L93 Difference]: Finished difference Result 2999 states and 4101 transitions. [2021-11-03 05:40:51,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:40:51,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 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 [2021-11-03 05:40:51,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:51,127 INFO L225 Difference]: With dead ends: 2999 [2021-11-03 05:40:51,127 INFO L226 Difference]: Without dead ends: 2765 [2021-11-03 05:40:51,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:40:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2021-11-03 05:40:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 1495. [2021-11-03 05:40:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1466 states have (on average 1.4106412005457025) internal successors, (2068), 1494 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2068 transitions. [2021-11-03 05:40:51,247 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2068 transitions. Word has length 107 [2021-11-03 05:40:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:51,248 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 2068 transitions. [2021-11-03 05:40:51,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 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) [2021-11-03 05:40:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2068 transitions. [2021-11-03 05:40:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:40:51,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:51,250 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:51,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 05:40:51,250 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:51,250 INFO L85 PathProgramCache]: Analyzing trace with hash 610829059, now seen corresponding path program 1 times [2021-11-03 05:40:51,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:51,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82399644] [2021-11-03 05:40:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:51,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:51,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:51,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82399644] [2021-11-03 05:40:51,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82399644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:51,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:51,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 05:40:51,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441618750] [2021-11-03 05:40:51,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:40:51,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:51,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:40:51,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:40:51,443 INFO L87 Difference]: Start difference. First operand 1495 states and 2068 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 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) [2021-11-03 05:40:53,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:53,722 INFO L93 Difference]: Finished difference Result 2207 states and 3032 transitions. [2021-11-03 05:40:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 05:40:53,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 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 [2021-11-03 05:40:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:53,726 INFO L225 Difference]: With dead ends: 2207 [2021-11-03 05:40:53,726 INFO L226 Difference]: Without dead ends: 1627 [2021-11-03 05:40:53,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-03 05:40:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-11-03 05:40:53,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1441. [2021-11-03 05:40:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4093484419263456) internal successors, (1990), 1440 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1990 transitions. [2021-11-03 05:40:53,870 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1990 transitions. Word has length 107 [2021-11-03 05:40:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:53,870 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1990 transitions. [2021-11-03 05:40:53,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 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) [2021-11-03 05:40:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1990 transitions. [2021-11-03 05:40:53,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:40:53,873 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:53,873 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:53,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 05:40:53,874 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:53,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1220519359, now seen corresponding path program 1 times [2021-11-03 05:40:53,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:53,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147424137] [2021-11-03 05:40:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:53,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:53,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:53,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147424137] [2021-11-03 05:40:53,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147424137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:53,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:53,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:40:53,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906407606] [2021-11-03 05:40:53,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:40:54,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:40:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:40:54,001 INFO L87 Difference]: Start difference. First operand 1441 states and 1990 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:40:55,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:55,901 INFO L93 Difference]: Finished difference Result 2580 states and 3546 transitions. [2021-11-03 05:40:55,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:40:55,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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 [2021-11-03 05:40:55,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:55,904 INFO L225 Difference]: With dead ends: 2580 [2021-11-03 05:40:55,905 INFO L226 Difference]: Without dead ends: 2431 [2021-11-03 05:40:55,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:40:55,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-03 05:40:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-03 05:40:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.408640226628895) internal successors, (1989), 1440 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1989 transitions. [2021-11-03 05:40:56,083 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1989 transitions. Word has length 107 [2021-11-03 05:40:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:56,083 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1989 transitions. [2021-11-03 05:40:56,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:40:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1989 transitions. [2021-11-03 05:40:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:40:56,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:56,086 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:56,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 05:40:56,087 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1693218314, now seen corresponding path program 1 times [2021-11-03 05:40:56,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:56,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455450047] [2021-11-03 05:40:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:56,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:56,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:56,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455450047] [2021-11-03 05:40:56,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455450047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:56,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:56,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:40:56,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972470564] [2021-11-03 05:40:56,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:40:56,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:56,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:40:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:40:56,340 INFO L87 Difference]: Start difference. First operand 1441 states and 1989 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:40:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:58,485 INFO L93 Difference]: Finished difference Result 2656 states and 3650 transitions. [2021-11-03 05:40:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:40:58,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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 [2021-11-03 05:40:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:58,491 INFO L225 Difference]: With dead ends: 2656 [2021-11-03 05:40:58,491 INFO L226 Difference]: Without dead ends: 2438 [2021-11-03 05:40:58,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:40:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-11-03 05:40:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1441. [2021-11-03 05:40:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4079320113314449) internal successors, (1988), 1440 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:40:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1988 transitions. [2021-11-03 05:40:58,644 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1988 transitions. Word has length 107 [2021-11-03 05:40:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:58,644 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1988 transitions. [2021-11-03 05:40:58,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:40:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1988 transitions. [2021-11-03 05:40:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:40:58,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:58,646 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:40:58,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 05:40:58,646 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:40:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1279242644, now seen corresponding path program 1 times [2021-11-03 05:40:58,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:40:58,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509023940] [2021-11-03 05:40:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:58,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:40:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:40:58,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:40:58,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509023940] [2021-11-03 05:40:58,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509023940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:58,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:58,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:40:58,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13595347] [2021-11-03 05:40:58,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:40:58,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:40:58,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:40:58,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:40:58,771 INFO L87 Difference]: Start difference. First operand 1441 states and 1988 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:41:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:00,847 INFO L93 Difference]: Finished difference Result 2574 states and 3538 transitions. [2021-11-03 05:41:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:00,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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 [2021-11-03 05:41:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:00,853 INFO L225 Difference]: With dead ends: 2574 [2021-11-03 05:41:00,853 INFO L226 Difference]: Without dead ends: 2431 [2021-11-03 05:41:00,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-03 05:41:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-03 05:41:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4072237960339944) internal successors, (1987), 1440 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1987 transitions. [2021-11-03 05:41:01,042 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1987 transitions. Word has length 107 [2021-11-03 05:41:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:01,043 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1987 transitions. [2021-11-03 05:41:01,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:41:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1987 transitions. [2021-11-03 05:41:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:41:01,045 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:01,046 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:01,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 05:41:01,046 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:01,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash 492027980, now seen corresponding path program 1 times [2021-11-03 05:41:01,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:01,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286490616] [2021-11-03 05:41:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:01,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:01,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:01,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286490616] [2021-11-03 05:41:01,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286490616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:01,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:01,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:01,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175202461] [2021-11-03 05:41:01,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:01,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:01,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:01,181 INFO L87 Difference]: Start difference. First operand 1441 states and 1987 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:41:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:03,312 INFO L93 Difference]: Finished difference Result 2636 states and 3626 transitions. [2021-11-03 05:41:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:03,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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 [2021-11-03 05:41:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:03,319 INFO L225 Difference]: With dead ends: 2636 [2021-11-03 05:41:03,319 INFO L226 Difference]: Without dead ends: 2438 [2021-11-03 05:41:03,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:03,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-11-03 05:41:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1441. [2021-11-03 05:41:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.406515580736544) internal successors, (1986), 1440 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1986 transitions. [2021-11-03 05:41:03,511 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1986 transitions. Word has length 107 [2021-11-03 05:41:03,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:03,512 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1986 transitions. [2021-11-03 05:41:03,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-03 05:41:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1986 transitions. [2021-11-03 05:41:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:03,514 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:03,515 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:03,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 05:41:03,515 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash -921964773, now seen corresponding path program 1 times [2021-11-03 05:41:03,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:03,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616114978] [2021-11-03 05:41:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:03,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:03,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:03,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616114978] [2021-11-03 05:41:03,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616114978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:03,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:03,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:03,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018895258] [2021-11-03 05:41:03,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:03,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:03,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:03,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:03,666 INFO L87 Difference]: Start difference. First operand 1441 states and 1986 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:05,522 INFO L93 Difference]: Finished difference Result 2275 states and 3059 transitions. [2021-11-03 05:41:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:05,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:05,525 INFO L225 Difference]: With dead ends: 2275 [2021-11-03 05:41:05,525 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:41:05,525 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:05,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:41:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:41:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.405099150141643) internal successors, (1984), 1440 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1984 transitions. [2021-11-03 05:41:05,649 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1984 transitions. Word has length 109 [2021-11-03 05:41:05,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:05,650 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1984 transitions. [2021-11-03 05:41:05,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1984 transitions. [2021-11-03 05:41:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:05,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:05,653 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:05,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 05:41:05,653 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:05,653 INFO L85 PathProgramCache]: Analyzing trace with hash 526079636, now seen corresponding path program 1 times [2021-11-03 05:41:05,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:05,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809664970] [2021-11-03 05:41:05,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:05,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:05,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:05,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809664970] [2021-11-03 05:41:05,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809664970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:05,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:05,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:05,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254785436] [2021-11-03 05:41:05,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:05,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:05,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:05,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:05,793 INFO L87 Difference]: Start difference. First operand 1441 states and 1984 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:07,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:07,851 INFO L93 Difference]: Finished difference Result 2633 states and 3608 transitions. [2021-11-03 05:41:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:07,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:07,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:07,856 INFO L225 Difference]: With dead ends: 2633 [2021-11-03 05:41:07,856 INFO L226 Difference]: Without dead ends: 2431 [2021-11-03 05:41:07,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:07,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-03 05:41:08,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-03 05:41:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4036827195467423) internal successors, (1982), 1440 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1982 transitions. [2021-11-03 05:41:08,100 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1982 transitions. Word has length 109 [2021-11-03 05:41:08,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:08,100 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1982 transitions. [2021-11-03 05:41:08,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1982 transitions. [2021-11-03 05:41:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:08,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:08,102 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:08,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 05:41:08,102 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 796642855, now seen corresponding path program 1 times [2021-11-03 05:41:08,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:08,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182766637] [2021-11-03 05:41:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:08,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:08,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:08,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182766637] [2021-11-03 05:41:08,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182766637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:08,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:08,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:08,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676738349] [2021-11-03 05:41:08,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:08,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:08,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:08,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:08,241 INFO L87 Difference]: Start difference. First operand 1441 states and 1982 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:10,404 INFO L93 Difference]: Finished difference Result 2555 states and 3495 transitions. [2021-11-03 05:41:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:10,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:10,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:10,407 INFO L225 Difference]: With dead ends: 2555 [2021-11-03 05:41:10,407 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:10,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:10,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4022662889518414) internal successors, (1980), 1440 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1980 transitions. [2021-11-03 05:41:10,563 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1980 transitions. Word has length 109 [2021-11-03 05:41:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:10,563 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1980 transitions. [2021-11-03 05:41:10,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:10,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1980 transitions. [2021-11-03 05:41:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:10,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:10,566 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:10,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 05:41:10,567 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:10,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:10,567 INFO L85 PathProgramCache]: Analyzing trace with hash -656947927, now seen corresponding path program 1 times [2021-11-03 05:41:10,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:10,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765015016] [2021-11-03 05:41:10,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:10,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:10,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:10,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765015016] [2021-11-03 05:41:10,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765015016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:10,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:10,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:10,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169268333] [2021-11-03 05:41:10,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:10,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:10,708 INFO L87 Difference]: Start difference. First operand 1441 states and 1980 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:13,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:13,063 INFO L93 Difference]: Finished difference Result 2551 states and 3488 transitions. [2021-11-03 05:41:13,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:13,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:13,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:13,066 INFO L225 Difference]: With dead ends: 2551 [2021-11-03 05:41:13,066 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:13,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:13,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4008498583569404) internal successors, (1978), 1440 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1978 transitions. [2021-11-03 05:41:13,205 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1978 transitions. Word has length 109 [2021-11-03 05:41:13,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:13,205 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1978 transitions. [2021-11-03 05:41:13,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1978 transitions. [2021-11-03 05:41:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:13,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:13,211 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:13,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 05:41:13,212 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:13,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1633760465, now seen corresponding path program 1 times [2021-11-03 05:41:13,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:13,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059564900] [2021-11-03 05:41:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:13,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:13,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:13,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059564900] [2021-11-03 05:41:13,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059564900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:13,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:13,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:13,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382809327] [2021-11-03 05:41:13,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:13,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:13,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:13,350 INFO L87 Difference]: Start difference. First operand 1441 states and 1978 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:15,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:15,697 INFO L93 Difference]: Finished difference Result 2559 states and 3495 transitions. [2021-11-03 05:41:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:15,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:15,699 INFO L225 Difference]: With dead ends: 2559 [2021-11-03 05:41:15,699 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:15,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3994334277620397) internal successors, (1976), 1440 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1976 transitions. [2021-11-03 05:41:15,843 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1976 transitions. Word has length 109 [2021-11-03 05:41:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:15,843 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1976 transitions. [2021-11-03 05:41:15,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:15,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1976 transitions. [2021-11-03 05:41:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:15,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:15,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:15,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 05:41:15,847 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1910162385, now seen corresponding path program 1 times [2021-11-03 05:41:15,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:15,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751500712] [2021-11-03 05:41:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:15,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:15,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:15,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751500712] [2021-11-03 05:41:15,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751500712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:15,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:15,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:15,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37719978] [2021-11-03 05:41:15,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:15,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:15,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:15,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:15,970 INFO L87 Difference]: Start difference. First operand 1441 states and 1976 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:18,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:18,244 INFO L93 Difference]: Finished difference Result 2649 states and 3623 transitions. [2021-11-03 05:41:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:18,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:18,247 INFO L225 Difference]: With dead ends: 2649 [2021-11-03 05:41:18,247 INFO L226 Difference]: Without dead ends: 2431 [2021-11-03 05:41:18,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-03 05:41:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-03 05:41:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3980169971671388) internal successors, (1974), 1440 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1974 transitions. [2021-11-03 05:41:18,393 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1974 transitions. Word has length 109 [2021-11-03 05:41:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:18,393 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1974 transitions. [2021-11-03 05:41:18,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:18,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1974 transitions. [2021-11-03 05:41:18,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:18,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:18,395 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:18,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 05:41:18,396 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:18,396 INFO L85 PathProgramCache]: Analyzing trace with hash 136383870, now seen corresponding path program 1 times [2021-11-03 05:41:18,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:18,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197301706] [2021-11-03 05:41:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:18,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:18,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:18,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197301706] [2021-11-03 05:41:18,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197301706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:18,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:18,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:18,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160539292] [2021-11-03 05:41:18,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:18,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:18,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:18,517 INFO L87 Difference]: Start difference. First operand 1441 states and 1974 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:20,727 INFO L93 Difference]: Finished difference Result 2665 states and 3635 transitions. [2021-11-03 05:41:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:20,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:20,730 INFO L225 Difference]: With dead ends: 2665 [2021-11-03 05:41:20,730 INFO L226 Difference]: Without dead ends: 2431 [2021-11-03 05:41:20,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-03 05:41:20,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-03 05:41:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3966005665722379) internal successors, (1972), 1440 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1972 transitions. [2021-11-03 05:41:20,911 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1972 transitions. Word has length 109 [2021-11-03 05:41:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:20,911 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1972 transitions. [2021-11-03 05:41:20,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1972 transitions. [2021-11-03 05:41:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:20,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:20,913 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:20,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 05:41:20,913 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:20,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:20,914 INFO L85 PathProgramCache]: Analyzing trace with hash -483309304, now seen corresponding path program 1 times [2021-11-03 05:41:20,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:20,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224195441] [2021-11-03 05:41:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:20,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:21,032 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:21,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224195441] [2021-11-03 05:41:21,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224195441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:21,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:21,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:21,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956746239] [2021-11-03 05:41:21,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:21,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:21,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:21,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:21,034 INFO L87 Difference]: Start difference. First operand 1441 states and 1972 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:23,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:23,400 INFO L93 Difference]: Finished difference Result 2796 states and 3815 transitions. [2021-11-03 05:41:23,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:23,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:23,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:23,403 INFO L225 Difference]: With dead ends: 2796 [2021-11-03 05:41:23,403 INFO L226 Difference]: Without dead ends: 2438 [2021-11-03 05:41:23,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-11-03 05:41:23,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1441. [2021-11-03 05:41:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3951841359773371) internal successors, (1970), 1440 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1970 transitions. [2021-11-03 05:41:23,555 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1970 transitions. Word has length 109 [2021-11-03 05:41:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:23,556 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1970 transitions. [2021-11-03 05:41:23,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1970 transitions. [2021-11-03 05:41:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:23,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:23,557 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:23,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 05:41:23,558 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:23,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1068212881, now seen corresponding path program 1 times [2021-11-03 05:41:23,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:23,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816425019] [2021-11-03 05:41:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:23,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:23,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:23,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816425019] [2021-11-03 05:41:23,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816425019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:23,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:23,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:23,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8206229] [2021-11-03 05:41:23,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:23,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:23,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:23,686 INFO L87 Difference]: Start difference. First operand 1441 states and 1970 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:26,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:26,190 INFO L93 Difference]: Finished difference Result 2536 states and 3454 transitions. [2021-11-03 05:41:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:26,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:26,193 INFO L225 Difference]: With dead ends: 2536 [2021-11-03 05:41:26,193 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:26,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:26,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:26,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3944759206798867) internal successors, (1969), 1440 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1969 transitions. [2021-11-03 05:41:26,379 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1969 transitions. Word has length 109 [2021-11-03 05:41:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:26,379 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1969 transitions. [2021-11-03 05:41:26,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1969 transitions. [2021-11-03 05:41:26,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:26,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:26,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:26,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 05:41:26,381 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:26,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1457487321, now seen corresponding path program 1 times [2021-11-03 05:41:26,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:26,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496683760] [2021-11-03 05:41:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:26,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:26,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:26,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496683760] [2021-11-03 05:41:26,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496683760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:26,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:26,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:26,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35128115] [2021-11-03 05:41:26,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:26,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:26,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:26,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:26,496 INFO L87 Difference]: Start difference. First operand 1441 states and 1969 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:28,783 INFO L93 Difference]: Finished difference Result 2599 states and 3539 transitions. [2021-11-03 05:41:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:28,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:28,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:28,786 INFO L225 Difference]: With dead ends: 2599 [2021-11-03 05:41:28,786 INFO L226 Difference]: Without dead ends: 2431 [2021-11-03 05:41:28,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:28,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-03 05:41:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-03 05:41:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3937677053824362) internal successors, (1968), 1440 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1968 transitions. [2021-11-03 05:41:28,946 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1968 transitions. Word has length 109 [2021-11-03 05:41:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:28,947 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1968 transitions. [2021-11-03 05:41:28,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1968 transitions. [2021-11-03 05:41:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:28,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:28,949 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:28,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 05:41:28,950 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:28,950 INFO L85 PathProgramCache]: Analyzing trace with hash -528536602, now seen corresponding path program 1 times [2021-11-03 05:41:28,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:28,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316393810] [2021-11-03 05:41:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:28,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:29,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:29,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316393810] [2021-11-03 05:41:29,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316393810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:29,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:29,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:29,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119601980] [2021-11-03 05:41:29,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:29,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:29,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:29,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:29,072 INFO L87 Difference]: Start difference. First operand 1441 states and 1968 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:31,419 INFO L93 Difference]: Finished difference Result 2536 states and 3452 transitions. [2021-11-03 05:41:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:31,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:31,422 INFO L225 Difference]: With dead ends: 2536 [2021-11-03 05:41:31,422 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:31,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:31,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3930594900849858) internal successors, (1967), 1440 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1967 transitions. [2021-11-03 05:41:31,588 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1967 transitions. Word has length 109 [2021-11-03 05:41:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:31,589 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1967 transitions. [2021-11-03 05:41:31,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1967 transitions. [2021-11-03 05:41:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:31,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:31,591 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:31,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 05:41:31,591 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash -315244667, now seen corresponding path program 1 times [2021-11-03 05:41:31,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:31,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994600785] [2021-11-03 05:41:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:31,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:31,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:31,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994600785] [2021-11-03 05:41:31,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994600785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:31,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:31,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:31,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392603353] [2021-11-03 05:41:31,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:31,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:31,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:31,715 INFO L87 Difference]: Start difference. First operand 1441 states and 1967 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:34,260 INFO L93 Difference]: Finished difference Result 2526 states and 3437 transitions. [2021-11-03 05:41:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:34,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:34,263 INFO L225 Difference]: With dead ends: 2526 [2021-11-03 05:41:34,263 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:34,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:34,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3923512747875355) internal successors, (1966), 1440 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1966 transitions. [2021-11-03 05:41:34,428 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1966 transitions. Word has length 109 [2021-11-03 05:41:34,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:34,428 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1966 transitions. [2021-11-03 05:41:34,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1966 transitions. [2021-11-03 05:41:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:34,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:34,431 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:34,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 05:41:34,431 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash 37545191, now seen corresponding path program 1 times [2021-11-03 05:41:34,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:34,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946350491] [2021-11-03 05:41:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:34,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:34,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:34,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946350491] [2021-11-03 05:41:34,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946350491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:34,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:34,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:34,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038064165] [2021-11-03 05:41:34,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:34,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:34,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:34,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:34,549 INFO L87 Difference]: Start difference. First operand 1441 states and 1966 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:36,972 INFO L93 Difference]: Finished difference Result 2536 states and 3448 transitions. [2021-11-03 05:41:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:36,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:36,975 INFO L225 Difference]: With dead ends: 2536 [2021-11-03 05:41:36,975 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:36,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.391643059490085) internal successors, (1965), 1440 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1965 transitions. [2021-11-03 05:41:37,146 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1965 transitions. Word has length 109 [2021-11-03 05:41:37,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:37,146 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1965 transitions. [2021-11-03 05:41:37,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1965 transitions. [2021-11-03 05:41:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:37,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:37,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:37,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 05:41:37,151 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:37,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1265384283, now seen corresponding path program 1 times [2021-11-03 05:41:37,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:37,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301683890] [2021-11-03 05:41:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:37,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:37,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:37,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301683890] [2021-11-03 05:41:37,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301683890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:37,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:37,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:37,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351598997] [2021-11-03 05:41:37,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:37,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:37,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:37,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:37,291 INFO L87 Difference]: Start difference. First operand 1441 states and 1965 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:39,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:39,760 INFO L93 Difference]: Finished difference Result 2531 states and 3442 transitions. [2021-11-03 05:41:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:39,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:39,762 INFO L225 Difference]: With dead ends: 2531 [2021-11-03 05:41:39,762 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:39,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3909348441926346) internal successors, (1964), 1440 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1964 transitions. [2021-11-03 05:41:39,932 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1964 transitions. Word has length 109 [2021-11-03 05:41:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:39,932 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1964 transitions. [2021-11-03 05:41:39,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1964 transitions. [2021-11-03 05:41:39,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 05:41:39,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:39,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:39,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 05:41:39,934 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:39,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:39,935 INFO L85 PathProgramCache]: Analyzing trace with hash 506409967, now seen corresponding path program 1 times [2021-11-03 05:41:39,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:39,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393704837] [2021-11-03 05:41:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:39,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:40,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:40,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393704837] [2021-11-03 05:41:40,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393704837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:40,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:40,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:40,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579421872] [2021-11-03 05:41:40,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:40,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:40,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:40,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:40,046 INFO L87 Difference]: Start difference. First operand 1441 states and 1964 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:42,053 INFO L93 Difference]: Finished difference Result 2376 states and 3173 transitions. [2021-11-03 05:41:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:42,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 05:41:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:42,055 INFO L225 Difference]: With dead ends: 2376 [2021-11-03 05:41:42,056 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:41:42,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:42,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:41:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:41:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3902266288951841) internal successors, (1963), 1440 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1963 transitions. [2021-11-03 05:41:42,229 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1963 transitions. Word has length 109 [2021-11-03 05:41:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:42,229 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1963 transitions. [2021-11-03 05:41:42,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1963 transitions. [2021-11-03 05:41:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 05:41:42,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:42,231 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:42,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 05:41:42,231 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:42,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1991662946, now seen corresponding path program 1 times [2021-11-03 05:41:42,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:42,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129133927] [2021-11-03 05:41:42,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:42,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:42,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:42,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129133927] [2021-11-03 05:41:42,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129133927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:42,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:42,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:42,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129505918] [2021-11-03 05:41:42,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:42,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:42,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:42,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:42,367 INFO L87 Difference]: Start difference. First operand 1441 states and 1963 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:44,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:44,734 INFO L93 Difference]: Finished difference Result 2525 states and 3430 transitions. [2021-11-03 05:41:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:44,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-03 05:41:44,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:44,736 INFO L225 Difference]: With dead ends: 2525 [2021-11-03 05:41:44,737 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:44,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:44,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3895184135977336) internal successors, (1962), 1440 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1962 transitions. [2021-11-03 05:41:44,931 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1962 transitions. Word has length 110 [2021-11-03 05:41:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:44,931 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1962 transitions. [2021-11-03 05:41:44,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:44,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1962 transitions. [2021-11-03 05:41:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 05:41:44,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:44,933 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:44,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 05:41:44,934 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:44,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:44,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1218250696, now seen corresponding path program 1 times [2021-11-03 05:41:44,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:44,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866102144] [2021-11-03 05:41:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:44,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:45,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:45,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866102144] [2021-11-03 05:41:45,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866102144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:45,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:45,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:45,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34524235] [2021-11-03 05:41:45,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:45,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:45,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:45,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:45,059 INFO L87 Difference]: Start difference. First operand 1441 states and 1962 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:47,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:47,311 INFO L93 Difference]: Finished difference Result 2465 states and 3329 transitions. [2021-11-03 05:41:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:47,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-03 05:41:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:47,314 INFO L225 Difference]: With dead ends: 2465 [2021-11-03 05:41:47,315 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:41:47,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:41:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:41:47,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:41:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3888101983002832) internal successors, (1961), 1440 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1961 transitions. [2021-11-03 05:41:47,544 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1961 transitions. Word has length 110 [2021-11-03 05:41:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:47,544 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1961 transitions. [2021-11-03 05:41:47,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1961 transitions. [2021-11-03 05:41:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:41:47,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:47,547 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:47,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 05:41:47,547 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1818417713, now seen corresponding path program 1 times [2021-11-03 05:41:47,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:47,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140186300] [2021-11-03 05:41:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:47,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:47,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:47,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140186300] [2021-11-03 05:41:47,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140186300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:47,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:47,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:47,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353676178] [2021-11-03 05:41:47,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:47,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:47,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:47,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:47,669 INFO L87 Difference]: Start difference. First operand 1441 states and 1961 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:49,840 INFO L93 Difference]: Finished difference Result 2481 states and 3349 transitions. [2021-11-03 05:41:49,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:49,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:41:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:49,843 INFO L225 Difference]: With dead ends: 2481 [2021-11-03 05:41:49,843 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:41:49,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:41:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:41:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3873937677053825) internal successors, (1959), 1440 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1959 transitions. [2021-11-03 05:41:50,057 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1959 transitions. Word has length 111 [2021-11-03 05:41:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:50,058 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1959 transitions. [2021-11-03 05:41:50,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1959 transitions. [2021-11-03 05:41:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:41:50,060 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:50,060 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:50,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 05:41:50,061 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1348346125, now seen corresponding path program 1 times [2021-11-03 05:41:50,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:50,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129429607] [2021-11-03 05:41:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:50,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:50,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:50,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129429607] [2021-11-03 05:41:50,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129429607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:50,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:50,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:50,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081708038] [2021-11-03 05:41:50,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:50,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:50,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:50,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:50,178 INFO L87 Difference]: Start difference. First operand 1441 states and 1959 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:52,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:52,488 INFO L93 Difference]: Finished difference Result 2555 states and 3460 transitions. [2021-11-03 05:41:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:52,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:41:52,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:52,490 INFO L225 Difference]: With dead ends: 2555 [2021-11-03 05:41:52,490 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:52,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:52,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:52,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3859773371104815) internal successors, (1957), 1440 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1957 transitions. [2021-11-03 05:41:52,679 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1957 transitions. Word has length 111 [2021-11-03 05:41:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:52,679 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1957 transitions. [2021-11-03 05:41:52,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1957 transitions. [2021-11-03 05:41:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:41:52,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:52,681 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:52,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 05:41:52,681 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1529729732, now seen corresponding path program 1 times [2021-11-03 05:41:52,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:52,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418183167] [2021-11-03 05:41:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:52,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:52,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:52,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418183167] [2021-11-03 05:41:52,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418183167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:52,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:52,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:52,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959342094] [2021-11-03 05:41:52,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:52,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:52,800 INFO L87 Difference]: Start difference. First operand 1441 states and 1957 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:54,897 INFO L93 Difference]: Finished difference Result 2378 states and 3167 transitions. [2021-11-03 05:41:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:54,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:41:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:54,899 INFO L225 Difference]: With dead ends: 2378 [2021-11-03 05:41:54,899 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:41:54,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:54,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:41:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:41:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3845609065155808) internal successors, (1955), 1440 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1955 transitions. [2021-11-03 05:41:55,090 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1955 transitions. Word has length 111 [2021-11-03 05:41:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:55,090 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1955 transitions. [2021-11-03 05:41:55,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:55,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1955 transitions. [2021-11-03 05:41:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:41:55,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:55,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:55,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 05:41:55,092 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:55,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1904369066, now seen corresponding path program 1 times [2021-11-03 05:41:55,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:55,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524175027] [2021-11-03 05:41:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:55,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:55,216 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:55,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524175027] [2021-11-03 05:41:55,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524175027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:55,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:55,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:55,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920415134] [2021-11-03 05:41:55,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:55,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:55,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:55,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:55,218 INFO L87 Difference]: Start difference. First operand 1441 states and 1955 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:57,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:57,629 INFO L93 Difference]: Finished difference Result 2555 states and 3455 transitions. [2021-11-03 05:41:57,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:41:57,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:41:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:57,631 INFO L225 Difference]: With dead ends: 2555 [2021-11-03 05:41:57,631 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:41:57,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:41:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:41:57,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:41:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.38314447592068) internal successors, (1953), 1440 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1953 transitions. [2021-11-03 05:41:57,827 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1953 transitions. Word has length 111 [2021-11-03 05:41:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:57,827 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1953 transitions. [2021-11-03 05:41:57,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1953 transitions. [2021-11-03 05:41:57,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:41:57,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:57,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:57,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 05:41:57,828 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:41:57,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash 341530428, now seen corresponding path program 1 times [2021-11-03 05:41:57,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:41:57,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986342433] [2021-11-03 05:41:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:57,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:41:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:57,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:41:57,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986342433] [2021-11-03 05:41:57,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986342433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:57,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:57,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:41:57,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756760397] [2021-11-03 05:41:57,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:57,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:41:57,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:57,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:57,937 INFO L87 Difference]: Start difference. First operand 1441 states and 1953 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:59,982 INFO L93 Difference]: Finished difference Result 2378 states and 3163 transitions. [2021-11-03 05:41:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:41:59,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:41:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:59,984 INFO L225 Difference]: With dead ends: 2378 [2021-11-03 05:41:59,984 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:41:59,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:41:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:42:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:42:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.381728045325779) internal successors, (1951), 1440 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1951 transitions. [2021-11-03 05:42:00,181 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1951 transitions. Word has length 111 [2021-11-03 05:42:00,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:00,181 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1951 transitions. [2021-11-03 05:42:00,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1951 transitions. [2021-11-03 05:42:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:00,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:00,183 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:00,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 05:42:00,184 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:00,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash -207885694, now seen corresponding path program 1 times [2021-11-03 05:42:00,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:00,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525502831] [2021-11-03 05:42:00,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:00,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:00,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:00,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525502831] [2021-11-03 05:42:00,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525502831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:00,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:00,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:00,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066354619] [2021-11-03 05:42:00,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:00,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:00,297 INFO L87 Difference]: Start difference. First operand 1441 states and 1951 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:02,311 INFO L93 Difference]: Finished difference Result 2275 states and 3019 transitions. [2021-11-03 05:42:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:02,313 INFO L225 Difference]: With dead ends: 2275 [2021-11-03 05:42:02,313 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:42:02,314 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:42:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:42:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:42:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3803116147308783) internal successors, (1949), 1440 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1949 transitions. [2021-11-03 05:42:02,517 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1949 transitions. Word has length 111 [2021-11-03 05:42:02,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:02,518 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1949 transitions. [2021-11-03 05:42:02,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1949 transitions. [2021-11-03 05:42:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:02,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:02,519 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:02,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 05:42:02,519 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1636260107, now seen corresponding path program 1 times [2021-11-03 05:42:02,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:02,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602291169] [2021-11-03 05:42:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:02,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:02,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:02,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602291169] [2021-11-03 05:42:02,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602291169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:02,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:02,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:02,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169099420] [2021-11-03 05:42:02,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:02,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:02,631 INFO L87 Difference]: Start difference. First operand 1441 states and 1949 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:05,052 INFO L93 Difference]: Finished difference Result 2479 states and 3332 transitions. [2021-11-03 05:42:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:05,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:05,055 INFO L225 Difference]: With dead ends: 2479 [2021-11-03 05:42:05,055 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:05,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3788951841359773) internal successors, (1947), 1440 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1947 transitions. [2021-11-03 05:42:05,261 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1947 transitions. Word has length 111 [2021-11-03 05:42:05,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:05,261 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1947 transitions. [2021-11-03 05:42:05,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:05,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1947 transitions. [2021-11-03 05:42:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:05,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:05,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:05,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 05:42:05,263 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:05,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1550265518, now seen corresponding path program 1 times [2021-11-03 05:42:05,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:05,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957073624] [2021-11-03 05:42:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:05,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:05,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:05,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957073624] [2021-11-03 05:42:05,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957073624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:05,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:05,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:05,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860295965] [2021-11-03 05:42:05,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:05,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:05,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:05,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:05,377 INFO L87 Difference]: Start difference. First operand 1441 states and 1947 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:07,658 INFO L93 Difference]: Finished difference Result 2479 states and 3330 transitions. [2021-11-03 05:42:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:07,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:07,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:07,660 INFO L225 Difference]: With dead ends: 2479 [2021-11-03 05:42:07,660 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:07,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:07,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3774787535410764) internal successors, (1945), 1440 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1945 transitions. [2021-11-03 05:42:07,893 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1945 transitions. Word has length 111 [2021-11-03 05:42:07,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:07,894 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1945 transitions. [2021-11-03 05:42:07,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:07,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1945 transitions. [2021-11-03 05:42:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:07,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:07,895 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:07,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 05:42:07,895 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:07,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:07,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1110619485, now seen corresponding path program 1 times [2021-11-03 05:42:07,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:07,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127476411] [2021-11-03 05:42:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:07,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:08,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:08,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127476411] [2021-11-03 05:42:08,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127476411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:08,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:08,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:08,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046436526] [2021-11-03 05:42:08,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:08,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:08,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:08,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:08,007 INFO L87 Difference]: Start difference. First operand 1441 states and 1945 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:10,489 INFO L93 Difference]: Finished difference Result 2567 states and 3459 transitions. [2021-11-03 05:42:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:10,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:10,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:10,492 INFO L225 Difference]: With dead ends: 2567 [2021-11-03 05:42:10,492 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:42:10,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:10,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:42:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:42:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3760623229461757) internal successors, (1943), 1440 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1943 transitions. [2021-11-03 05:42:10,705 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1943 transitions. Word has length 111 [2021-11-03 05:42:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:10,705 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1943 transitions. [2021-11-03 05:42:10,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1943 transitions. [2021-11-03 05:42:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:10,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:10,706 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:10,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-03 05:42:10,706 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:10,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash 653409022, now seen corresponding path program 1 times [2021-11-03 05:42:10,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:10,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729469710] [2021-11-03 05:42:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:10,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:10,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:10,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729469710] [2021-11-03 05:42:10,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729469710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:10,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:10,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:10,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350966076] [2021-11-03 05:42:10,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:10,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:10,818 INFO L87 Difference]: Start difference. First operand 1441 states and 1943 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:13,265 INFO L93 Difference]: Finished difference Result 2485 states and 3331 transitions. [2021-11-03 05:42:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:13,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:13,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:13,267 INFO L225 Difference]: With dead ends: 2485 [2021-11-03 05:42:13,267 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:13,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:13,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3746458923512748) internal successors, (1941), 1440 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1941 transitions. [2021-11-03 05:42:13,484 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1941 transitions. Word has length 111 [2021-11-03 05:42:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:13,485 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1941 transitions. [2021-11-03 05:42:13,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1941 transitions. [2021-11-03 05:42:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:13,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:13,487 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:13,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-03 05:42:13,488 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1439144842, now seen corresponding path program 1 times [2021-11-03 05:42:13,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:13,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672616256] [2021-11-03 05:42:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:13,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:13,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:13,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672616256] [2021-11-03 05:42:13,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672616256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:13,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:13,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:13,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043718267] [2021-11-03 05:42:13,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:13,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:13,594 INFO L87 Difference]: Start difference. First operand 1441 states and 1941 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:15,671 INFO L93 Difference]: Finished difference Result 2382 states and 3152 transitions. [2021-11-03 05:42:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:15,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:15,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:15,674 INFO L225 Difference]: With dead ends: 2382 [2021-11-03 05:42:15,674 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:42:15,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:42:15,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:42:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:42:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3732294617563738) internal successors, (1939), 1440 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1939 transitions. [2021-11-03 05:42:15,893 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1939 transitions. Word has length 111 [2021-11-03 05:42:15,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:15,893 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1939 transitions. [2021-11-03 05:42:15,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1939 transitions. [2021-11-03 05:42:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:15,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:15,895 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:15,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-03 05:42:15,895 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:15,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:15,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1896220579, now seen corresponding path program 1 times [2021-11-03 05:42:15,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:15,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993565546] [2021-11-03 05:42:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:15,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:16,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:16,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993565546] [2021-11-03 05:42:16,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993565546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:16,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:16,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:16,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333959438] [2021-11-03 05:42:16,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:16,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:16,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:16,005 INFO L87 Difference]: Start difference. First operand 1441 states and 1939 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:18,401 INFO L93 Difference]: Finished difference Result 2567 states and 3449 transitions. [2021-11-03 05:42:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:18,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:18,404 INFO L225 Difference]: With dead ends: 2567 [2021-11-03 05:42:18,404 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:42:18,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:42:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:42:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:42:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3718130311614731) internal successors, (1937), 1440 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1937 transitions. [2021-11-03 05:42:18,625 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1937 transitions. Word has length 111 [2021-11-03 05:42:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:18,625 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1937 transitions. [2021-11-03 05:42:18,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:18,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1937 transitions. [2021-11-03 05:42:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:18,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:18,626 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:18,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-03 05:42:18,626 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1091793947, now seen corresponding path program 1 times [2021-11-03 05:42:18,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:18,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905609294] [2021-11-03 05:42:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:18,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:18,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:18,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905609294] [2021-11-03 05:42:18,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905609294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:18,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:18,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:18,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149347696] [2021-11-03 05:42:18,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:18,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:18,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:18,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:18,738 INFO L87 Difference]: Start difference. First operand 1441 states and 1937 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:21,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:21,079 INFO L93 Difference]: Finished difference Result 2485 states and 3323 transitions. [2021-11-03 05:42:21,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:21,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:21,081 INFO L225 Difference]: With dead ends: 2485 [2021-11-03 05:42:21,081 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:21,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:21,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:21,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3703966005665722) internal successors, (1935), 1440 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:21,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1935 transitions. [2021-11-03 05:42:21,306 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1935 transitions. Word has length 111 [2021-11-03 05:42:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:21,306 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1935 transitions. [2021-11-03 05:42:21,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1935 transitions. [2021-11-03 05:42:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:21,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:21,308 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:21,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-03 05:42:21,308 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:21,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:21,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1432277484, now seen corresponding path program 1 times [2021-11-03 05:42:21,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:21,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153635376] [2021-11-03 05:42:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:21,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:21,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:21,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153635376] [2021-11-03 05:42:21,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153635376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:21,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:21,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:21,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260342074] [2021-11-03 05:42:21,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:21,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:21,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:21,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:21,420 INFO L87 Difference]: Start difference. First operand 1441 states and 1935 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:23,745 INFO L93 Difference]: Finished difference Result 2485 states and 3321 transitions. [2021-11-03 05:42:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:23,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:23,748 INFO L225 Difference]: With dead ends: 2485 [2021-11-03 05:42:23,748 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:23,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:23,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:23,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3689801699716715) internal successors, (1933), 1440 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1933 transitions. [2021-11-03 05:42:23,976 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1933 transitions. Word has length 111 [2021-11-03 05:42:23,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:23,976 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1933 transitions. [2021-11-03 05:42:23,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:23,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1933 transitions. [2021-11-03 05:42:23,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:23,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:23,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:23,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-03 05:42:23,978 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:23,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1704635001, now seen corresponding path program 1 times [2021-11-03 05:42:23,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:23,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468490724] [2021-11-03 05:42:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:23,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:24,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:24,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468490724] [2021-11-03 05:42:24,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468490724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:24,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:24,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:24,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183568071] [2021-11-03 05:42:24,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:24,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:24,087 INFO L87 Difference]: Start difference. First operand 1441 states and 1933 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:26,480 INFO L93 Difference]: Finished difference Result 2479 states and 3310 transitions. [2021-11-03 05:42:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:26,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:26,482 INFO L225 Difference]: With dead ends: 2479 [2021-11-03 05:42:26,482 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:26,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3675637393767706) internal successors, (1931), 1440 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1931 transitions. [2021-11-03 05:42:26,712 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1931 transitions. Word has length 111 [2021-11-03 05:42:26,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:26,713 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1931 transitions. [2021-11-03 05:42:26,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:26,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1931 transitions. [2021-11-03 05:42:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:26,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:26,714 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:26,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-03 05:42:26,715 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:26,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:26,715 INFO L85 PathProgramCache]: Analyzing trace with hash -625494814, now seen corresponding path program 1 times [2021-11-03 05:42:26,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:26,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183467124] [2021-11-03 05:42:26,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:26,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:26,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:26,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183467124] [2021-11-03 05:42:26,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183467124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:26,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:26,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:26,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067422168] [2021-11-03 05:42:26,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:26,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:26,830 INFO L87 Difference]: Start difference. First operand 1441 states and 1931 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:29,281 INFO L93 Difference]: Finished difference Result 2545 states and 3406 transitions. [2021-11-03 05:42:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:29,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:29,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:29,284 INFO L225 Difference]: With dead ends: 2545 [2021-11-03 05:42:29,284 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:42:29,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:42:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:42:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:42:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.36685552407932) internal successors, (1930), 1440 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1930 transitions. [2021-11-03 05:42:29,543 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1930 transitions. Word has length 111 [2021-11-03 05:42:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:29,543 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1930 transitions. [2021-11-03 05:42:29,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1930 transitions. [2021-11-03 05:42:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:29,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:29,544 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:29,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-03 05:42:29,545 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1560842717, now seen corresponding path program 1 times [2021-11-03 05:42:29,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:29,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561114207] [2021-11-03 05:42:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:29,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:29,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:29,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561114207] [2021-11-03 05:42:29,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561114207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:29,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:29,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:29,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065476709] [2021-11-03 05:42:29,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:29,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:29,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:29,648 INFO L87 Difference]: Start difference. First operand 1441 states and 1930 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:31,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:31,876 INFO L93 Difference]: Finished difference Result 2475 states and 3300 transitions. [2021-11-03 05:42:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:31,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:31,879 INFO L225 Difference]: With dead ends: 2475 [2021-11-03 05:42:31,879 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:31,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3661473087818696) internal successors, (1929), 1440 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1929 transitions. [2021-11-03 05:42:32,114 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1929 transitions. Word has length 111 [2021-11-03 05:42:32,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:32,114 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1929 transitions. [2021-11-03 05:42:32,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1929 transitions. [2021-11-03 05:42:32,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:32,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:32,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:32,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-03 05:42:32,116 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:32,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash 507956714, now seen corresponding path program 1 times [2021-11-03 05:42:32,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:32,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246158683] [2021-11-03 05:42:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:32,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:32,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:32,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246158683] [2021-11-03 05:42:32,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246158683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:32,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:32,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:32,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202417059] [2021-11-03 05:42:32,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:32,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:32,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:32,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:32,238 INFO L87 Difference]: Start difference. First operand 1441 states and 1929 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:34,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:34,430 INFO L93 Difference]: Finished difference Result 2379 states and 3136 transitions. [2021-11-03 05:42:34,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:34,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:34,432 INFO L225 Difference]: With dead ends: 2379 [2021-11-03 05:42:34,432 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:42:34,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:42:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:42:34,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:42:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3654390934844192) internal successors, (1928), 1440 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1928 transitions. [2021-11-03 05:42:34,669 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1928 transitions. Word has length 111 [2021-11-03 05:42:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:34,669 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1928 transitions. [2021-11-03 05:42:34,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:34,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1928 transitions. [2021-11-03 05:42:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:34,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:34,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:34,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-03 05:42:34,671 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1102714936, now seen corresponding path program 1 times [2021-11-03 05:42:34,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:34,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349866437] [2021-11-03 05:42:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:34,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:34,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:34,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349866437] [2021-11-03 05:42:34,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349866437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:34,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:34,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:34,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949961540] [2021-11-03 05:42:34,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:34,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:34,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:34,777 INFO L87 Difference]: Start difference. First operand 1441 states and 1928 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:37,151 INFO L93 Difference]: Finished difference Result 2471 states and 3293 transitions. [2021-11-03 05:42:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:37,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:37,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:37,153 INFO L225 Difference]: With dead ends: 2471 [2021-11-03 05:42:37,153 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:37,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:37,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.364730878186969) internal successors, (1927), 1440 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1927 transitions. [2021-11-03 05:42:37,421 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1927 transitions. Word has length 111 [2021-11-03 05:42:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:37,421 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1927 transitions. [2021-11-03 05:42:37,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1927 transitions. [2021-11-03 05:42:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:37,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:37,423 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:37,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-03 05:42:37,423 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:37,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:37,423 INFO L85 PathProgramCache]: Analyzing trace with hash -554268063, now seen corresponding path program 1 times [2021-11-03 05:42:37,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:37,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986585895] [2021-11-03 05:42:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:37,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:37,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:37,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986585895] [2021-11-03 05:42:37,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986585895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:37,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:37,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:37,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593331546] [2021-11-03 05:42:37,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:37,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:37,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:37,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:37,536 INFO L87 Difference]: Start difference. First operand 1441 states and 1927 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:40,031 INFO L93 Difference]: Finished difference Result 2475 states and 3296 transitions. [2021-11-03 05:42:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:40,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:40,035 INFO L225 Difference]: With dead ends: 2475 [2021-11-03 05:42:40,035 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:40,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:40,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3640226628895185) internal successors, (1926), 1440 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1926 transitions. [2021-11-03 05:42:40,301 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1926 transitions. Word has length 111 [2021-11-03 05:42:40,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:40,301 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1926 transitions. [2021-11-03 05:42:40,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:40,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1926 transitions. [2021-11-03 05:42:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:40,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:40,304 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:40,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-03 05:42:40,304 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash 43161329, now seen corresponding path program 1 times [2021-11-03 05:42:40,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:40,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752597735] [2021-11-03 05:42:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:40,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:40,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:40,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752597735] [2021-11-03 05:42:40,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752597735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:40,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:40,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:40,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236474774] [2021-11-03 05:42:40,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:40,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:40,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:40,410 INFO L87 Difference]: Start difference. First operand 1441 states and 1926 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:42,800 INFO L93 Difference]: Finished difference Result 2471 states and 3290 transitions. [2021-11-03 05:42:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:42,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:42,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:42,803 INFO L225 Difference]: With dead ends: 2471 [2021-11-03 05:42:42,803 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:42,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.363314447592068) internal successors, (1925), 1440 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1925 transitions. [2021-11-03 05:42:43,049 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1925 transitions. Word has length 111 [2021-11-03 05:42:43,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:43,050 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1925 transitions. [2021-11-03 05:42:43,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1925 transitions. [2021-11-03 05:42:43,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:43,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:43,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:43,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-03 05:42:43,051 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash 554907178, now seen corresponding path program 1 times [2021-11-03 05:42:43,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:43,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778631944] [2021-11-03 05:42:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:43,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:43,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:43,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778631944] [2021-11-03 05:42:43,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778631944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:43,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:43,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:43,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606806901] [2021-11-03 05:42:43,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:43,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:43,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:43,158 INFO L87 Difference]: Start difference. First operand 1441 states and 1925 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:45,444 INFO L93 Difference]: Finished difference Result 2471 states and 3289 transitions. [2021-11-03 05:42:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:42:45,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:45,446 INFO L225 Difference]: With dead ends: 2471 [2021-11-03 05:42:45,446 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:45,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:42:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3626062322946175) internal successors, (1924), 1440 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1924 transitions. [2021-11-03 05:42:45,737 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1924 transitions. Word has length 111 [2021-11-03 05:42:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:45,738 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1924 transitions. [2021-11-03 05:42:45,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1924 transitions. [2021-11-03 05:42:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:45,739 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:45,739 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:45,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-03 05:42:45,739 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:45,739 INFO L85 PathProgramCache]: Analyzing trace with hash 195358297, now seen corresponding path program 1 times [2021-11-03 05:42:45,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:45,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230335295] [2021-11-03 05:42:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:45,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:45,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:45,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230335295] [2021-11-03 05:42:45,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230335295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:45,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:45,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:45,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449159298] [2021-11-03 05:42:45,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:45,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:45,854 INFO L87 Difference]: Start difference. First operand 1441 states and 1924 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:48,406 INFO L93 Difference]: Finished difference Result 2465 states and 3278 transitions. [2021-11-03 05:42:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:48,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:48,409 INFO L225 Difference]: With dead ends: 2465 [2021-11-03 05:42:48,409 INFO L226 Difference]: Without dead ends: 2359 [2021-11-03 05:42:48,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:42:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-03 05:42:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-03 05:42:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.361898016997167) internal successors, (1923), 1440 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1923 transitions. [2021-11-03 05:42:48,662 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1923 transitions. Word has length 111 [2021-11-03 05:42:48,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:48,662 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1923 transitions. [2021-11-03 05:42:48,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:48,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1923 transitions. [2021-11-03 05:42:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:48,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:48,663 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:48,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-03 05:42:48,663 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:48,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:48,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1325049922, now seen corresponding path program 1 times [2021-11-03 05:42:48,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:48,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089237622] [2021-11-03 05:42:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:48,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:48,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:48,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089237622] [2021-11-03 05:42:48,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089237622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:48,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:48,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:48,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332506128] [2021-11-03 05:42:48,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:48,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:48,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:48,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:48,773 INFO L87 Difference]: Start difference. First operand 1441 states and 1923 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:51,023 INFO L93 Difference]: Finished difference Result 2275 states and 2988 transitions. [2021-11-03 05:42:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:51,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:51,025 INFO L225 Difference]: With dead ends: 2275 [2021-11-03 05:42:51,025 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:42:51,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:42:51,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:42:51,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:42:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3611898016997168) internal successors, (1922), 1440 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:51,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1922 transitions. [2021-11-03 05:42:51,279 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1922 transitions. Word has length 111 [2021-11-03 05:42:51,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:51,279 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1922 transitions. [2021-11-03 05:42:51,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1922 transitions. [2021-11-03 05:42:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:51,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:51,281 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:51,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-03 05:42:51,281 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:51,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1640902503, now seen corresponding path program 1 times [2021-11-03 05:42:51,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:51,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939844398] [2021-11-03 05:42:51,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:51,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:51,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:51,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939844398] [2021-11-03 05:42:51,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939844398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:51,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:51,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:51,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494946225] [2021-11-03 05:42:51,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:51,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:51,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:51,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:51,383 INFO L87 Difference]: Start difference. First operand 1441 states and 1922 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:53,703 INFO L93 Difference]: Finished difference Result 2376 states and 3124 transitions. [2021-11-03 05:42:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:53,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:53,705 INFO L225 Difference]: With dead ends: 2376 [2021-11-03 05:42:53,705 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:42:53,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:42:53,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:42:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:42:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3604815864022664) internal successors, (1921), 1440 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1921 transitions. [2021-11-03 05:42:53,962 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1921 transitions. Word has length 111 [2021-11-03 05:42:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:53,962 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1921 transitions. [2021-11-03 05:42:53,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1921 transitions. [2021-11-03 05:42:53,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:53,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:53,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:53,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-03 05:42:53,964 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:53,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash 870796832, now seen corresponding path program 1 times [2021-11-03 05:42:53,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:53,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414368881] [2021-11-03 05:42:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:53,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:54,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:54,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414368881] [2021-11-03 05:42:54,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414368881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:54,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:54,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:54,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227848731] [2021-11-03 05:42:54,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:54,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:54,077 INFO L87 Difference]: Start difference. First operand 1441 states and 1921 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:56,308 INFO L93 Difference]: Finished difference Result 2376 states and 3122 transitions. [2021-11-03 05:42:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:56,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:56,311 INFO L225 Difference]: With dead ends: 2376 [2021-11-03 05:42:56,311 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 05:42:56,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:42:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 05:42:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1441. [2021-11-03 05:42:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3597733711048159) internal successors, (1920), 1440 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1920 transitions. [2021-11-03 05:42:56,579 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1920 transitions. Word has length 111 [2021-11-03 05:42:56,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:56,580 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1920 transitions. [2021-11-03 05:42:56,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:56,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1920 transitions. [2021-11-03 05:42:56,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:42:56,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:56,581 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:56,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-03 05:42:56,581 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash -627341068, now seen corresponding path program 1 times [2021-11-03 05:42:56,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:56,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785608695] [2021-11-03 05:42:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:56,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:56,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:56,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785608695] [2021-11-03 05:42:56,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785608695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:56,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:56,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:42:56,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704308033] [2021-11-03 05:42:56,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:56,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:56,693 INFO L87 Difference]: Start difference. First operand 1441 states and 1920 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:59,199 INFO L93 Difference]: Finished difference Result 2531 states and 3375 transitions. [2021-11-03 05:42:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:42:59,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-03 05:42:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:59,202 INFO L225 Difference]: With dead ends: 2531 [2021-11-03 05:42:59,202 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 05:42:59,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:42:59,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 05:42:59,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-03 05:42:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3590651558073654) internal successors, (1919), 1440 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1919 transitions. [2021-11-03 05:42:59,473 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1919 transitions. Word has length 111 [2021-11-03 05:42:59,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:59,474 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1919 transitions. [2021-11-03 05:42:59,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:59,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1919 transitions. [2021-11-03 05:42:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 05:42:59,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:59,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:59,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-03 05:42:59,475 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:42:59,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:59,476 INFO L85 PathProgramCache]: Analyzing trace with hash 457791208, now seen corresponding path program 1 times [2021-11-03 05:42:59,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:42:59,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731773463] [2021-11-03 05:42:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:59,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:42:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:59,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:42:59,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731773463] [2021-11-03 05:42:59,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731773463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:59,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:59,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:42:59,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012096838] [2021-11-03 05:42:59,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:42:59,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:42:59,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:42:59,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:42:59,830 INFO L87 Difference]: Start difference. First operand 1441 states and 1919 transitions. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:01,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:01,194 INFO L93 Difference]: Finished difference Result 2233 states and 2981 transitions. [2021-11-03 05:43:01,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:43:01,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-03 05:43:01,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:01,196 INFO L225 Difference]: With dead ends: 2233 [2021-11-03 05:43:01,196 INFO L226 Difference]: Without dead ends: 1737 [2021-11-03 05:43:01,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:43:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2021-11-03 05:43:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1049. [2021-11-03 05:43:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1026 states have (on average 1.3469785575048734) internal successors, (1382), 1048 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1382 transitions. [2021-11-03 05:43:01,420 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1382 transitions. Word has length 112 [2021-11-03 05:43:01,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:01,420 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1382 transitions. [2021-11-03 05:43:01,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1382 transitions. [2021-11-03 05:43:01,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 05:43:01,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:01,421 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:01,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-03 05:43:01,422 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash -767074129, now seen corresponding path program 1 times [2021-11-03 05:43:01,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:01,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296032295] [2021-11-03 05:43:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:01,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:01,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:01,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296032295] [2021-11-03 05:43:01,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296032295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:01,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:01,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:43:01,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672193088] [2021-11-03 05:43:01,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:43:01,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:43:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:43:01,733 INFO L87 Difference]: Start difference. First operand 1049 states and 1382 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:02,996 INFO L93 Difference]: Finished difference Result 1595 states and 2013 transitions. [2021-11-03 05:43:02,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:02,996 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-03 05:43:02,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:02,998 INFO L225 Difference]: With dead ends: 1595 [2021-11-03 05:43:02,998 INFO L226 Difference]: Without dead ends: 1119 [2021-11-03 05:43:02,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:43:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-03 05:43:03,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 677. [2021-11-03 05:43:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3298033282904689) internal successors, (879), 676 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 879 transitions. [2021-11-03 05:43:03,172 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 879 transitions. Word has length 112 [2021-11-03 05:43:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:03,172 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 879 transitions. [2021-11-03 05:43:03,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 879 transitions. [2021-11-03 05:43:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:03,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:03,173 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:03,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-03 05:43:03,173 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1321600354, now seen corresponding path program 1 times [2021-11-03 05:43:03,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:03,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191129737] [2021-11-03 05:43:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:03,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:03,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:03,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191129737] [2021-11-03 05:43:03,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191129737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:03,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:03,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:03,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733525119] [2021-11-03 05:43:03,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:03,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:03,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:03,287 INFO L87 Difference]: Start difference. First operand 677 states and 879 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:04,687 INFO L93 Difference]: Finished difference Result 1309 states and 1706 transitions. [2021-11-03 05:43:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:04,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:04,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:04,689 INFO L225 Difference]: With dead ends: 1309 [2021-11-03 05:43:04,689 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:04,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:43:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:04,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-03 05:43:04,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3267776096822996) internal successors, (877), 676 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 877 transitions. [2021-11-03 05:43:04,866 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 877 transitions. Word has length 113 [2021-11-03 05:43:04,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:04,866 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 877 transitions. [2021-11-03 05:43:04,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:04,866 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 877 transitions. [2021-11-03 05:43:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:04,867 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:04,867 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:04,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-03 05:43:04,867 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash -864524617, now seen corresponding path program 1 times [2021-11-03 05:43:04,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:04,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875121509] [2021-11-03 05:43:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:04,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:04,965 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:04,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875121509] [2021-11-03 05:43:04,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875121509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:04,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:04,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:04,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21998998] [2021-11-03 05:43:04,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:04,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:04,967 INFO L87 Difference]: Start difference. First operand 677 states and 877 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:06,180 INFO L93 Difference]: Finished difference Result 1357 states and 1777 transitions. [2021-11-03 05:43:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:43:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:06,182 INFO L225 Difference]: With dead ends: 1357 [2021-11-03 05:43:06,182 INFO L226 Difference]: Without dead ends: 1229 [2021-11-03 05:43:06,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:43:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-11-03 05:43:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 677. [2021-11-03 05:43:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3237518910741302) internal successors, (875), 676 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 875 transitions. [2021-11-03 05:43:06,362 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 875 transitions. Word has length 113 [2021-11-03 05:43:06,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:06,362 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 875 transitions. [2021-11-03 05:43:06,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 875 transitions. [2021-11-03 05:43:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:06,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:06,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:06,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-03 05:43:06,363 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1464445520, now seen corresponding path program 1 times [2021-11-03 05:43:06,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:06,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915173542] [2021-11-03 05:43:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:06,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:06,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:06,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915173542] [2021-11-03 05:43:06,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915173542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:06,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:06,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:06,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504815430] [2021-11-03 05:43:06,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:06,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:06,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:06,456 INFO L87 Difference]: Start difference. First operand 677 states and 875 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:07,793 INFO L93 Difference]: Finished difference Result 1413 states and 1848 transitions. [2021-11-03 05:43:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:07,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:07,794 INFO L225 Difference]: With dead ends: 1413 [2021-11-03 05:43:07,795 INFO L226 Difference]: Without dead ends: 1245 [2021-11-03 05:43:07,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:43:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-11-03 05:43:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 677. [2021-11-03 05:43:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3207261724659607) internal successors, (873), 676 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 873 transitions. [2021-11-03 05:43:07,976 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 873 transitions. Word has length 113 [2021-11-03 05:43:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:07,976 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 873 transitions. [2021-11-03 05:43:07,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 873 transitions. [2021-11-03 05:43:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:07,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:07,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:07,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-03 05:43:07,977 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:07,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1600076547, now seen corresponding path program 1 times [2021-11-03 05:43:07,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:07,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253532879] [2021-11-03 05:43:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:07,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:08,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:08,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253532879] [2021-11-03 05:43:08,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253532879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:08,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:08,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:08,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537980386] [2021-11-03 05:43:08,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:08,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:08,091 INFO L87 Difference]: Start difference. First operand 677 states and 873 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:09,538 INFO L93 Difference]: Finished difference Result 1309 states and 1700 transitions. [2021-11-03 05:43:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:09,539 INFO L225 Difference]: With dead ends: 1309 [2021-11-03 05:43:09,539 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:09,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:43:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-03 05:43:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3177004538577912) internal successors, (871), 676 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 871 transitions. [2021-11-03 05:43:09,723 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 871 transitions. Word has length 113 [2021-11-03 05:43:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:09,723 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 871 transitions. [2021-11-03 05:43:09,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 871 transitions. [2021-11-03 05:43:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:09,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:09,724 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:09,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-03 05:43:09,724 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:09,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2025168367, now seen corresponding path program 1 times [2021-11-03 05:43:09,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:09,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308016852] [2021-11-03 05:43:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:09,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:09,837 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:09,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308016852] [2021-11-03 05:43:09,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308016852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:09,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:09,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:09,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026511093] [2021-11-03 05:43:09,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:09,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:09,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:09,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:09,839 INFO L87 Difference]: Start difference. First operand 677 states and 871 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:11,195 INFO L93 Difference]: Finished difference Result 1305 states and 1691 transitions. [2021-11-03 05:43:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:11,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:11,196 INFO L225 Difference]: With dead ends: 1305 [2021-11-03 05:43:11,197 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:11,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:43:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-03 05:43:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3146747352496218) internal successors, (869), 676 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 869 transitions. [2021-11-03 05:43:11,383 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 869 transitions. Word has length 113 [2021-11-03 05:43:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:11,383 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 869 transitions. [2021-11-03 05:43:11,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 869 transitions. [2021-11-03 05:43:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:11,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:11,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:11,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-03 05:43:11,384 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:11,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash -346640280, now seen corresponding path program 1 times [2021-11-03 05:43:11,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:11,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131143063] [2021-11-03 05:43:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:11,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:11,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:11,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131143063] [2021-11-03 05:43:11,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131143063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:11,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:11,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:11,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48026723] [2021-11-03 05:43:11,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:11,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:11,496 INFO L87 Difference]: Start difference. First operand 677 states and 869 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:12,792 INFO L93 Difference]: Finished difference Result 1309 states and 1694 transitions. [2021-11-03 05:43:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:12,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:12,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:12,793 INFO L225 Difference]: With dead ends: 1309 [2021-11-03 05:43:12,793 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:12,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:43:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:12,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-03 05:43:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3116490166414523) internal successors, (867), 676 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 867 transitions. [2021-11-03 05:43:12,981 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 867 transitions. Word has length 113 [2021-11-03 05:43:12,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:12,981 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 867 transitions. [2021-11-03 05:43:12,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 867 transitions. [2021-11-03 05:43:12,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:12,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:12,982 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:12,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-03 05:43:12,983 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash 110435457, now seen corresponding path program 1 times [2021-11-03 05:43:12,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:12,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956205852] [2021-11-03 05:43:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:12,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:13,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:13,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956205852] [2021-11-03 05:43:13,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956205852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:13,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:13,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:13,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296821843] [2021-11-03 05:43:13,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:13,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:13,088 INFO L87 Difference]: Start difference. First operand 677 states and 867 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:14,540 INFO L93 Difference]: Finished difference Result 1357 states and 1765 transitions. [2021-11-03 05:43:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:43:14,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:14,542 INFO L225 Difference]: With dead ends: 1357 [2021-11-03 05:43:14,542 INFO L226 Difference]: Without dead ends: 1229 [2021-11-03 05:43:14,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:43:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-11-03 05:43:14,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 677. [2021-11-03 05:43:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3086232980332828) internal successors, (865), 676 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 865 transitions. [2021-11-03 05:43:14,731 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 865 transitions. Word has length 113 [2021-11-03 05:43:14,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:14,732 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 865 transitions. [2021-11-03 05:43:14,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 865 transitions. [2021-11-03 05:43:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:14,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:14,733 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:14,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-03 05:43:14,733 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:14,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1992458392, now seen corresponding path program 1 times [2021-11-03 05:43:14,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:14,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505068542] [2021-11-03 05:43:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:14,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:14,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:14,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505068542] [2021-11-03 05:43:14,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505068542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:14,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:14,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:14,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130468993] [2021-11-03 05:43:14,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:14,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:14,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:14,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:14,849 INFO L87 Difference]: Start difference. First operand 677 states and 865 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:16,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:16,159 INFO L93 Difference]: Finished difference Result 1357 states and 1761 transitions. [2021-11-03 05:43:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:43:16,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:16,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:16,161 INFO L225 Difference]: With dead ends: 1357 [2021-11-03 05:43:16,161 INFO L226 Difference]: Without dead ends: 1229 [2021-11-03 05:43:16,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:43:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-11-03 05:43:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 677. [2021-11-03 05:43:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3055975794251136) internal successors, (863), 676 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 863 transitions. [2021-11-03 05:43:16,379 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 863 transitions. Word has length 113 [2021-11-03 05:43:16,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:16,379 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 863 transitions. [2021-11-03 05:43:16,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 863 transitions. [2021-11-03 05:43:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:16,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:16,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:16,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-03 05:43:16,380 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash -502817302, now seen corresponding path program 1 times [2021-11-03 05:43:16,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:16,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382434307] [2021-11-03 05:43:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:16,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:16,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:16,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382434307] [2021-11-03 05:43:16,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382434307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:16,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:16,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:16,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097699143] [2021-11-03 05:43:16,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:16,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:16,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:16,472 INFO L87 Difference]: Start difference. First operand 677 states and 863 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:17,779 INFO L93 Difference]: Finished difference Result 1309 states and 1688 transitions. [2021-11-03 05:43:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:17,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:17,781 INFO L225 Difference]: With dead ends: 1309 [2021-11-03 05:43:17,781 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:17,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:43:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-03 05:43:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.302571860816944) internal successors, (861), 676 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 861 transitions. [2021-11-03 05:43:17,978 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 861 transitions. Word has length 113 [2021-11-03 05:43:17,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:17,978 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 861 transitions. [2021-11-03 05:43:17,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 861 transitions. [2021-11-03 05:43:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:17,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:17,979 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:17,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-03 05:43:17,979 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:17,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:17,979 INFO L85 PathProgramCache]: Analyzing trace with hash 169576250, now seen corresponding path program 1 times [2021-11-03 05:43:17,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:17,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968914220] [2021-11-03 05:43:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:17,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:18,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:18,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968914220] [2021-11-03 05:43:18,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968914220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:18,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:18,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:18,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740263428] [2021-11-03 05:43:18,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:18,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:18,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:18,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:18,078 INFO L87 Difference]: Start difference. First operand 677 states and 861 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:19,448 INFO L93 Difference]: Finished difference Result 1305 states and 1679 transitions. [2021-11-03 05:43:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:19,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:19,450 INFO L225 Difference]: With dead ends: 1305 [2021-11-03 05:43:19,450 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:19,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:43:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-03 05:43:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.2995461422087746) internal successors, (859), 676 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 859 transitions. [2021-11-03 05:43:19,644 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 859 transitions. Word has length 113 [2021-11-03 05:43:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:19,644 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 859 transitions. [2021-11-03 05:43:19,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 859 transitions. [2021-11-03 05:43:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:19,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:19,645 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:19,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-03 05:43:19,645 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:19,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:19,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1526738031, now seen corresponding path program 1 times [2021-11-03 05:43:19,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:19,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452876894] [2021-11-03 05:43:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:19,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:19,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:19,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452876894] [2021-11-03 05:43:19,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452876894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:19,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:19,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:19,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729738734] [2021-11-03 05:43:19,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:19,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:19,752 INFO L87 Difference]: Start difference. First operand 677 states and 859 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:21,081 INFO L93 Difference]: Finished difference Result 1309 states and 1682 transitions. [2021-11-03 05:43:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:21,082 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:21,083 INFO L225 Difference]: With dead ends: 1309 [2021-11-03 05:43:21,083 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:21,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:43:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-03 05:43:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.2965204236006052) internal successors, (857), 676 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 857 transitions. [2021-11-03 05:43:21,279 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 857 transitions. Word has length 113 [2021-11-03 05:43:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:21,279 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 857 transitions. [2021-11-03 05:43:21,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 857 transitions. [2021-11-03 05:43:21,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:21,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:21,280 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:21,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-03 05:43:21,280 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash -852989034, now seen corresponding path program 1 times [2021-11-03 05:43:21,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:21,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301647644] [2021-11-03 05:43:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:21,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:21,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:21,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301647644] [2021-11-03 05:43:21,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301647644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:21,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:21,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:21,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760934770] [2021-11-03 05:43:21,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:21,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:21,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:21,365 INFO L87 Difference]: Start difference. First operand 677 states and 857 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:22,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:22,746 INFO L93 Difference]: Finished difference Result 1305 states and 1673 transitions. [2021-11-03 05:43:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:22,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:22,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:22,748 INFO L225 Difference]: With dead ends: 1305 [2021-11-03 05:43:22,748 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:22,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:43:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-03 05:43:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.2934947049924357) internal successors, (855), 676 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 855 transitions. [2021-11-03 05:43:22,946 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 855 transitions. Word has length 113 [2021-11-03 05:43:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:22,946 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 855 transitions. [2021-11-03 05:43:22,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 855 transitions. [2021-11-03 05:43:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:22,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:22,947 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:22,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-03 05:43:22,947 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:22,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1573578092, now seen corresponding path program 1 times [2021-11-03 05:43:22,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:22,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189953796] [2021-11-03 05:43:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:22,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:23,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:23,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189953796] [2021-11-03 05:43:23,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189953796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:23,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:23,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:23,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901322818] [2021-11-03 05:43:23,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:23,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:23,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:23,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:23,043 INFO L87 Difference]: Start difference. First operand 677 states and 855 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:24,599 INFO L93 Difference]: Finished difference Result 1305 states and 1671 transitions. [2021-11-03 05:43:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:24,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:24,600 INFO L225 Difference]: With dead ends: 1305 [2021-11-03 05:43:24,601 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:24,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:43:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-03 05:43:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.2904689863842662) internal successors, (853), 676 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 853 transitions. [2021-11-03 05:43:24,800 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 853 transitions. Word has length 113 [2021-11-03 05:43:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:24,800 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 853 transitions. [2021-11-03 05:43:24,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 853 transitions. [2021-11-03 05:43:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 05:43:24,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:24,801 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:24,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-03 05:43:24,801 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:24,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:24,802 INFO L85 PathProgramCache]: Analyzing trace with hash 292912905, now seen corresponding path program 1 times [2021-11-03 05:43:24,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:24,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893107854] [2021-11-03 05:43:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:24,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:25,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:25,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893107854] [2021-11-03 05:43:25,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893107854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:25,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:25,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 05:43:25,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115876788] [2021-11-03 05:43:25,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 05:43:25,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 05:43:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:43:25,731 INFO L87 Difference]: Start difference. First operand 677 states and 853 transitions. Second operand has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:27,487 INFO L93 Difference]: Finished difference Result 1257 states and 1602 transitions. [2021-11-03 05:43:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 05:43:27,487 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 05:43:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:27,488 INFO L225 Difference]: With dead ends: 1257 [2021-11-03 05:43:27,488 INFO L226 Difference]: Without dead ends: 1040 [2021-11-03 05:43:27,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2021-11-03 05:43:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-11-03 05:43:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 683. [2021-11-03 05:43:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 667 states have (on average 1.2893553223388305) internal successors, (860), 682 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 860 transitions. [2021-11-03 05:43:27,690 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 860 transitions. Word has length 113 [2021-11-03 05:43:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:27,690 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 860 transitions. [2021-11-03 05:43:27,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 860 transitions. [2021-11-03 05:43:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 05:43:27,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:27,692 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:27,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-03 05:43:27,692 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1159855513, now seen corresponding path program 1 times [2021-11-03 05:43:27,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:27,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700772755] [2021-11-03 05:43:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:27,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:28,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:28,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700772755] [2021-11-03 05:43:28,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700772755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:28,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:28,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 05:43:28,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156974349] [2021-11-03 05:43:28,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 05:43:28,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:28,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 05:43:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:43:28,378 INFO L87 Difference]: Start difference. First operand 683 states and 860 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:30,316 INFO L93 Difference]: Finished difference Result 1626 states and 2081 transitions. [2021-11-03 05:43:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 05:43:30,317 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-03 05:43:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:30,318 INFO L225 Difference]: With dead ends: 1626 [2021-11-03 05:43:30,318 INFO L226 Difference]: Without dead ends: 1409 [2021-11-03 05:43:30,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:43:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-11-03 05:43:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 580. [2021-11-03 05:43:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 564 states have (on average 1.2801418439716312) internal successors, (722), 579 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 722 transitions. [2021-11-03 05:43:30,504 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 722 transitions. Word has length 114 [2021-11-03 05:43:30,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:30,504 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 722 transitions. [2021-11-03 05:43:30,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:30,504 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 722 transitions. [2021-11-03 05:43:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 05:43:30,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:30,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:30,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-03 05:43:30,505 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash -427368200, now seen corresponding path program 1 times [2021-11-03 05:43:30,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:30,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375061599] [2021-11-03 05:43:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:30,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:30,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:30,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375061599] [2021-11-03 05:43:30,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375061599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:30,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:30,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:43:30,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874369804] [2021-11-03 05:43:30,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:43:30,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:43:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:43:30,817 INFO L87 Difference]: Start difference. First operand 580 states and 722 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:32,111 INFO L93 Difference]: Finished difference Result 1172 states and 1496 transitions. [2021-11-03 05:43:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:43:32,111 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-03 05:43:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:32,112 INFO L225 Difference]: With dead ends: 1172 [2021-11-03 05:43:32,112 INFO L226 Difference]: Without dead ends: 1105 [2021-11-03 05:43:32,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:43:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2021-11-03 05:43:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 566. [2021-11-03 05:43:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 550 states have (on average 1.278181818181818) internal successors, (703), 565 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 703 transitions. [2021-11-03 05:43:32,323 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 703 transitions. Word has length 114 [2021-11-03 05:43:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:32,323 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 703 transitions. [2021-11-03 05:43:32,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 703 transitions. [2021-11-03 05:43:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 05:43:32,324 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:32,324 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:32,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-03 05:43:32,324 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash 231732395, now seen corresponding path program 1 times [2021-11-03 05:43:32,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:32,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551637731] [2021-11-03 05:43:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:32,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:32,650 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:32,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551637731] [2021-11-03 05:43:32,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551637731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:32,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:32,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:43:32,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362030685] [2021-11-03 05:43:32,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:43:32,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:32,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:43:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:43:32,652 INFO L87 Difference]: Start difference. First operand 566 states and 703 transitions. Second operand has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:34,354 INFO L93 Difference]: Finished difference Result 1307 states and 1612 transitions. [2021-11-03 05:43:34,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:43:34,355 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-03 05:43:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:34,356 INFO L225 Difference]: With dead ends: 1307 [2021-11-03 05:43:34,356 INFO L226 Difference]: Without dead ends: 1197 [2021-11-03 05:43:34,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-03 05:43:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-03 05:43:34,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 556. [2021-11-03 05:43:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 541 states have (on average 1.2717190388170057) internal successors, (688), 555 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 688 transitions. [2021-11-03 05:43:34,560 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 688 transitions. Word has length 115 [2021-11-03 05:43:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:34,560 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 688 transitions. [2021-11-03 05:43:34,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 688 transitions. [2021-11-03 05:43:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 05:43:34,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:34,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:34,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-03 05:43:34,561 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:34,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash -728867118, now seen corresponding path program 1 times [2021-11-03 05:43:34,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:34,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203757664] [2021-11-03 05:43:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:34,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:34,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:34,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203757664] [2021-11-03 05:43:34,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203757664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:34,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:34,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:43:34,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456186313] [2021-11-03 05:43:34,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:43:34,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:34,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:43:34,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:43:34,849 INFO L87 Difference]: Start difference. First operand 556 states and 688 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:36,478 INFO L93 Difference]: Finished difference Result 1425 states and 1827 transitions. [2021-11-03 05:43:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:43:36,478 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-03 05:43:36,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:36,480 INFO L225 Difference]: With dead ends: 1425 [2021-11-03 05:43:36,480 INFO L226 Difference]: Without dead ends: 1267 [2021-11-03 05:43:36,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:43:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2021-11-03 05:43:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 502. [2021-11-03 05:43:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 490 states have (on average 1.2591836734693878) internal successors, (617), 501 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 617 transitions. [2021-11-03 05:43:36,679 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 617 transitions. Word has length 115 [2021-11-03 05:43:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:36,679 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 617 transitions. [2021-11-03 05:43:36,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 617 transitions. [2021-11-03 05:43:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 05:43:36,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:36,680 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:36,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-03 05:43:36,680 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:36,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:36,681 INFO L85 PathProgramCache]: Analyzing trace with hash -583909890, now seen corresponding path program 1 times [2021-11-03 05:43:36,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:36,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81967981] [2021-11-03 05:43:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:36,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:37,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:37,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81967981] [2021-11-03 05:43:37,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81967981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:37,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:37,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:43:37,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182630811] [2021-11-03 05:43:37,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:43:37,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:37,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:43:37,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:43:37,029 INFO L87 Difference]: Start difference. First operand 502 states and 617 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:38,689 INFO L93 Difference]: Finished difference Result 1317 states and 1691 transitions. [2021-11-03 05:43:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:43:38,690 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-03 05:43:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:38,691 INFO L225 Difference]: With dead ends: 1317 [2021-11-03 05:43:38,691 INFO L226 Difference]: Without dead ends: 1167 [2021-11-03 05:43:38,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:43:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-11-03 05:43:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 456. [2021-11-03 05:43:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 445 states have (on average 1.249438202247191) internal successors, (556), 455 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 556 transitions. [2021-11-03 05:43:38,883 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 556 transitions. Word has length 115 [2021-11-03 05:43:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:38,884 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 556 transitions. [2021-11-03 05:43:38,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 556 transitions. [2021-11-03 05:43:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 05:43:38,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:38,885 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:38,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-03 05:43:38,885 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash -95150020, now seen corresponding path program 1 times [2021-11-03 05:43:38,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:38,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015921372] [2021-11-03 05:43:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:38,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:39,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:39,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015921372] [2021-11-03 05:43:39,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015921372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:39,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:39,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 05:43:39,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079599902] [2021-11-03 05:43:39,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 05:43:39,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 05:43:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:43:39,415 INFO L87 Difference]: Start difference. First operand 456 states and 556 transitions. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:41,745 INFO L93 Difference]: Finished difference Result 1417 states and 1811 transitions. [2021-11-03 05:43:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 05:43:41,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-03 05:43:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:41,747 INFO L225 Difference]: With dead ends: 1417 [2021-11-03 05:43:41,747 INFO L226 Difference]: Without dead ends: 1255 [2021-11-03 05:43:41,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 05:43:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-11-03 05:43:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 456. [2021-11-03 05:43:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 445 states have (on average 1.2449438202247192) internal successors, (554), 455 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 554 transitions. [2021-11-03 05:43:41,949 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 554 transitions. Word has length 115 [2021-11-03 05:43:41,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:41,949 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 554 transitions. [2021-11-03 05:43:41,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 554 transitions. [2021-11-03 05:43:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 05:43:41,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:41,950 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:41,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-03 05:43:41,950 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 893322758, now seen corresponding path program 1 times [2021-11-03 05:43:41,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:41,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248214232] [2021-11-03 05:43:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:41,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:42,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:42,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248214232] [2021-11-03 05:43:42,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248214232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:42,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:42,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:42,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599582116] [2021-11-03 05:43:42,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:42,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:42,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:42,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:42,048 INFO L87 Difference]: Start difference. First operand 456 states and 554 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:42,900 INFO L93 Difference]: Finished difference Result 673 states and 823 transitions. [2021-11-03 05:43:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:43:42,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-03 05:43:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:42,901 INFO L225 Difference]: With dead ends: 673 [2021-11-03 05:43:42,901 INFO L226 Difference]: Without dead ends: 666 [2021-11-03 05:43:42,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:43:42,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-03 05:43:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 456. [2021-11-03 05:43:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 445 states have (on average 1.2426966292134831) internal successors, (553), 455 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 553 transitions. [2021-11-03 05:43:43,102 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 553 transitions. Word has length 116 [2021-11-03 05:43:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:43,102 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 553 transitions. [2021-11-03 05:43:43,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:43,102 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 553 transitions. [2021-11-03 05:43:43,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 05:43:43,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:43,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:43,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-03 05:43:43,103 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:43,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1400584479, now seen corresponding path program 1 times [2021-11-03 05:43:43,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:43,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47347028] [2021-11-03 05:43:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:43,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:43,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:43,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47347028] [2021-11-03 05:43:43,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47347028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:43,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:43,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:43:43,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980802729] [2021-11-03 05:43:43,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:43,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:43,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:43,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:43:43,212 INFO L87 Difference]: Start difference. First operand 456 states and 553 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:44,797 INFO L93 Difference]: Finished difference Result 1027 states and 1296 transitions. [2021-11-03 05:43:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:43:44,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-03 05:43:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:44,798 INFO L225 Difference]: With dead ends: 1027 [2021-11-03 05:43:44,798 INFO L226 Difference]: Without dead ends: 893 [2021-11-03 05:43:44,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:43:44,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-11-03 05:43:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 456. [2021-11-03 05:43:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 445 states have (on average 1.2382022471910112) internal successors, (551), 455 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 551 transitions. [2021-11-03 05:43:45,001 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 551 transitions. Word has length 116 [2021-11-03 05:43:45,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:45,001 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 551 transitions. [2021-11-03 05:43:45,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 551 transitions. [2021-11-03 05:43:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 05:43:45,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:45,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:45,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-03 05:43:45,002 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:45,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash -235086348, now seen corresponding path program 1 times [2021-11-03 05:43:45,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:45,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375906562] [2021-11-03 05:43:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:45,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:45,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:45,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375906562] [2021-11-03 05:43:45,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375906562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:45,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:45,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:43:45,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862449109] [2021-11-03 05:43:45,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:43:45,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:43:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:43:45,390 INFO L87 Difference]: Start difference. First operand 456 states and 551 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:47,352 INFO L93 Difference]: Finished difference Result 1096 states and 1345 transitions. [2021-11-03 05:43:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:43:47,353 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-03 05:43:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:47,354 INFO L225 Difference]: With dead ends: 1096 [2021-11-03 05:43:47,354 INFO L226 Difference]: Without dead ends: 986 [2021-11-03 05:43:47,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:43:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-03 05:43:47,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 444. [2021-11-03 05:43:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 434 states have (on average 1.2304147465437787) internal successors, (534), 443 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 534 transitions. [2021-11-03 05:43:47,583 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 534 transitions. Word has length 116 [2021-11-03 05:43:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:47,583 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 534 transitions. [2021-11-03 05:43:47,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 534 transitions. [2021-11-03 05:43:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 05:43:47,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:47,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:47,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-03 05:43:47,584 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:47,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:47,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1087045531, now seen corresponding path program 1 times [2021-11-03 05:43:47,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:47,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967265951] [2021-11-03 05:43:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:47,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:47,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:47,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967265951] [2021-11-03 05:43:47,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967265951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:47,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:47,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:43:47,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037090798] [2021-11-03 05:43:47,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:43:47,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:47,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:43:47,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:43:47,886 INFO L87 Difference]: Start difference. First operand 444 states and 534 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:49,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:49,371 INFO L93 Difference]: Finished difference Result 1182 states and 1489 transitions. [2021-11-03 05:43:49,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:43:49,371 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-03 05:43:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:49,372 INFO L225 Difference]: With dead ends: 1182 [2021-11-03 05:43:49,372 INFO L226 Difference]: Without dead ends: 1024 [2021-11-03 05:43:49,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:43:49,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-11-03 05:43:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 390. [2021-11-03 05:43:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 382 states have (on average 1.225130890052356) internal successors, (468), 389 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 468 transitions. [2021-11-03 05:43:49,572 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 468 transitions. Word has length 116 [2021-11-03 05:43:49,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:49,573 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 468 transitions. [2021-11-03 05:43:49,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:49,573 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 468 transitions. [2021-11-03 05:43:49,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 05:43:49,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:49,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:49,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-03 05:43:49,573 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:49,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1252964178, now seen corresponding path program 1 times [2021-11-03 05:43:49,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:49,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996865680] [2021-11-03 05:43:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:49,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:49,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:49,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996865680] [2021-11-03 05:43:49,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996865680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:49,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:49,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:43:49,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399147060] [2021-11-03 05:43:49,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:43:49,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:49,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:43:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:43:49,887 INFO L87 Difference]: Start difference. First operand 390 states and 468 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:51,659 INFO L93 Difference]: Finished difference Result 1215 states and 1533 transitions. [2021-11-03 05:43:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 05:43:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-03 05:43:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:51,661 INFO L225 Difference]: With dead ends: 1215 [2021-11-03 05:43:51,661 INFO L226 Difference]: Without dead ends: 1063 [2021-11-03 05:43:51,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-03 05:43:51,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-11-03 05:43:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 291. [2021-11-03 05:43:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 288 states have (on average 1.1979166666666667) internal successors, (345), 290 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 345 transitions. [2021-11-03 05:43:51,846 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 345 transitions. Word has length 116 [2021-11-03 05:43:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:51,846 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 345 transitions. [2021-11-03 05:43:51,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 345 transitions. [2021-11-03 05:43:51,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 05:43:51,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:51,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:51,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-03 05:43:51,847 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:43:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -73583846, now seen corresponding path program 1 times [2021-11-03 05:43:51,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:51,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059412921] [2021-11-03 05:43:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:51,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:53,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:53,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059412921] [2021-11-03 05:43:53,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059412921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:53,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:53,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-03 05:43:53,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630860695] [2021-11-03 05:43:53,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-03 05:43:53,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-03 05:43:53,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1307, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 05:43:53,818 INFO L87 Difference]: Start difference. First operand 291 states and 345 transitions. Second operand has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 37 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:00,326 INFO L93 Difference]: Finished difference Result 902 states and 1142 transitions. [2021-11-03 05:44:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-03 05:44:00,327 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 37 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-03 05:44:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:00,328 INFO L225 Difference]: With dead ends: 902 [2021-11-03 05:44:00,328 INFO L226 Difference]: Without dead ends: 896 [2021-11-03 05:44:00,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=634, Invalid=4336, Unknown=0, NotChecked=0, Total=4970 [2021-11-03 05:44:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-11-03 05:44:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 317. [2021-11-03 05:44:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 314 states have (on average 1.2006369426751593) internal successors, (377), 316 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 377 transitions. [2021-11-03 05:44:00,546 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 377 transitions. Word has length 118 [2021-11-03 05:44:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:00,546 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 377 transitions. [2021-11-03 05:44:00,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 37 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 377 transitions. [2021-11-03 05:44:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 05:44:00,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:00,547 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:00,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-03 05:44:00,547 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:00,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:00,547 INFO L85 PathProgramCache]: Analyzing trace with hash -159310399, now seen corresponding path program 1 times [2021-11-03 05:44:00,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:00,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345459817] [2021-11-03 05:44:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:00,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:02,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:02,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345459817] [2021-11-03 05:44:02,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345459817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:02,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:02,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-03 05:44:02,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279112340] [2021-11-03 05:44:02,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-03 05:44:02,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-03 05:44:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1160, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 05:44:02,155 INFO L87 Difference]: Start difference. First operand 317 states and 377 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:07,065 INFO L93 Difference]: Finished difference Result 353 states and 413 transitions. [2021-11-03 05:44:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 05:44:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-03 05:44:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:07,066 INFO L225 Difference]: With dead ends: 353 [2021-11-03 05:44:07,066 INFO L226 Difference]: Without dead ends: 345 [2021-11-03 05:44:07,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=616, Invalid=3940, Unknown=0, NotChecked=0, Total=4556 [2021-11-03 05:44:07,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-03 05:44:07,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 321. [2021-11-03 05:44:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 318 states have (on average 1.20125786163522) internal successors, (382), 320 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 382 transitions. [2021-11-03 05:44:07,263 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 382 transitions. Word has length 118 [2021-11-03 05:44:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:07,263 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 382 transitions. [2021-11-03 05:44:07,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:07,264 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 382 transitions. [2021-11-03 05:44:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-03 05:44:07,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:07,265 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:07,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-03 05:44:07,265 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:07,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:07,265 INFO L85 PathProgramCache]: Analyzing trace with hash 734613130, now seen corresponding path program 1 times [2021-11-03 05:44:07,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:07,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718660625] [2021-11-03 05:44:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:07,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:07,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:07,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718660625] [2021-11-03 05:44:07,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718660625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:07,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:07,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:44:07,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531976522] [2021-11-03 05:44:07,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:44:07,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:44:07,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:44:07,673 INFO L87 Difference]: Start difference. First operand 321 states and 382 transitions. Second operand has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:10,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:10,078 INFO L93 Difference]: Finished difference Result 1135 states and 1453 transitions. [2021-11-03 05:44:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 05:44:10,078 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-03 05:44:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:10,079 INFO L225 Difference]: With dead ends: 1135 [2021-11-03 05:44:10,079 INFO L226 Difference]: Without dead ends: 1129 [2021-11-03 05:44:10,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-03 05:44:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-11-03 05:44:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 309. [2021-11-03 05:44:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.1954397394136809) internal successors, (367), 308 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 367 transitions. [2021-11-03 05:44:10,281 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 367 transitions. Word has length 119 [2021-11-03 05:44:10,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:10,281 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 367 transitions. [2021-11-03 05:44:10,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 367 transitions. [2021-11-03 05:44:10,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-03 05:44:10,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:10,282 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:10,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-03 05:44:10,282 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:10,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:10,282 INFO L85 PathProgramCache]: Analyzing trace with hash 648886577, now seen corresponding path program 1 times [2021-11-03 05:44:10,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:10,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372271430] [2021-11-03 05:44:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:10,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:10,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:10,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372271430] [2021-11-03 05:44:10,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372271430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:10,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:10,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:44:10,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630852017] [2021-11-03 05:44:10,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:44:10,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:10,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:44:10,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:44:10,550 INFO L87 Difference]: Start difference. First operand 309 states and 367 transitions. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:11,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:11,763 INFO L93 Difference]: Finished difference Result 711 states and 893 transitions. [2021-11-03 05:44:11,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:44:11,764 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-03 05:44:11,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:11,765 INFO L225 Difference]: With dead ends: 711 [2021-11-03 05:44:11,765 INFO L226 Difference]: Without dead ends: 696 [2021-11-03 05:44:11,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:44:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-03 05:44:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 273. [2021-11-03 05:44:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.1911764705882353) internal successors, (324), 272 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 324 transitions. [2021-11-03 05:44:11,959 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 324 transitions. Word has length 119 [2021-11-03 05:44:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:11,959 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 324 transitions. [2021-11-03 05:44:11,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 324 transitions. [2021-11-03 05:44:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:44:11,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:11,960 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:11,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-03 05:44:11,960 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:11,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:11,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1175678301, now seen corresponding path program 1 times [2021-11-03 05:44:11,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:11,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437247972] [2021-11-03 05:44:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:11,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:12,008 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:12,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437247972] [2021-11-03 05:44:12,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437247972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:12,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:12,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:44:12,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087686096] [2021-11-03 05:44:12,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:12,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:12,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:12,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:12,009 INFO L87 Difference]: Start difference. First operand 273 states and 324 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:12,302 INFO L93 Difference]: Finished difference Result 385 states and 474 transitions. [2021-11-03 05:44:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-11-03 05:44:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:12,303 INFO L225 Difference]: With dead ends: 385 [2021-11-03 05:44:12,303 INFO L226 Difference]: Without dead ends: 332 [2021-11-03 05:44:12,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-03 05:44:12,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 322. [2021-11-03 05:44:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.2118380062305296) internal successors, (389), 321 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 389 transitions. [2021-11-03 05:44:12,574 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 389 transitions. Word has length 138 [2021-11-03 05:44:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:12,574 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 389 transitions. [2021-11-03 05:44:12,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 389 transitions. [2021-11-03 05:44:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-03 05:44:12,575 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:12,575 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:12,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-03 05:44:12,575 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:12,576 INFO L85 PathProgramCache]: Analyzing trace with hash -440603623, now seen corresponding path program 1 times [2021-11-03 05:44:12,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:12,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004412881] [2021-11-03 05:44:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:12,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:12,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:12,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004412881] [2021-11-03 05:44:12,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004412881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:12,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:12,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:44:12,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073135241] [2021-11-03 05:44:12,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:12,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:12,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:12,661 INFO L87 Difference]: Start difference. First operand 322 states and 389 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:13,214 INFO L93 Difference]: Finished difference Result 624 states and 795 transitions. [2021-11-03 05:44:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:13,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-03 05:44:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:13,215 INFO L225 Difference]: With dead ends: 624 [2021-11-03 05:44:13,215 INFO L226 Difference]: Without dead ends: 473 [2021-11-03 05:44:13,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-03 05:44:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 459. [2021-11-03 05:44:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.2510917030567685) internal successors, (573), 458 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2021-11-03 05:44:13,706 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 141 [2021-11-03 05:44:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:13,706 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2021-11-03 05:44:13,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2021-11-03 05:44:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-03 05:44:13,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:13,707 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:13,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-03 05:44:13,707 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:13,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1381161520, now seen corresponding path program 1 times [2021-11-03 05:44:13,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:13,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98884568] [2021-11-03 05:44:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:13,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:13,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:13,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98884568] [2021-11-03 05:44:13,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98884568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:13,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:13,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:44:13,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214407858] [2021-11-03 05:44:13,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:13,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:13,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:13,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:13,760 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:14,752 INFO L93 Difference]: Finished difference Result 1035 states and 1347 transitions. [2021-11-03 05:44:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:14,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-03 05:44:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:14,753 INFO L225 Difference]: With dead ends: 1035 [2021-11-03 05:44:14,753 INFO L226 Difference]: Without dead ends: 747 [2021-11-03 05:44:14,753 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-03 05:44:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 721. [2021-11-03 05:44:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.2819444444444446) internal successors, (923), 720 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 923 transitions. [2021-11-03 05:44:15,661 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 923 transitions. Word has length 144 [2021-11-03 05:44:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:15,661 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 923 transitions. [2021-11-03 05:44:15,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 923 transitions. [2021-11-03 05:44:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-03 05:44:15,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:15,662 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:15,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-03 05:44:15,662 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:15,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1506626462, now seen corresponding path program 1 times [2021-11-03 05:44:15,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:15,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921380883] [2021-11-03 05:44:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:15,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:15,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:15,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921380883] [2021-11-03 05:44:15,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921380883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:15,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:15,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:44:15,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086499933] [2021-11-03 05:44:15,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:15,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:15,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:15,719 INFO L87 Difference]: Start difference. First operand 721 states and 923 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) [2021-11-03 05:44:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:17,530 INFO L93 Difference]: Finished difference Result 1821 states and 2397 transitions. [2021-11-03 05:44:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:17,531 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 [2021-11-03 05:44:17,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:17,532 INFO L225 Difference]: With dead ends: 1821 [2021-11-03 05:44:17,532 INFO L226 Difference]: Without dead ends: 1271 [2021-11-03 05:44:17,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2021-11-03 05:44:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1221. [2021-11-03 05:44:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.3008196721311476) internal successors, (1587), 1220 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1587 transitions. [2021-11-03 05:44:19,264 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1587 transitions. Word has length 147 [2021-11-03 05:44:19,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:19,265 INFO L470 AbstractCegarLoop]: Abstraction has 1221 states and 1587 transitions. [2021-11-03 05:44:19,265 INFO L471 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) [2021-11-03 05:44:19,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1587 transitions. [2021-11-03 05:44:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-03 05:44:19,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:19,266 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:19,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-03 05:44:19,266 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:19,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2060054265, now seen corresponding path program 1 times [2021-11-03 05:44:19,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:19,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043217459] [2021-11-03 05:44:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:19,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:19,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:19,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043217459] [2021-11-03 05:44:19,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043217459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:19,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:19,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:44:19,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733001345] [2021-11-03 05:44:19,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:19,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:19,336 INFO L87 Difference]: Start difference. First operand 1221 states and 1587 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:22,787 INFO L93 Difference]: Finished difference Result 3321 states and 4389 transitions. [2021-11-03 05:44:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:22,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-11-03 05:44:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:22,790 INFO L225 Difference]: With dead ends: 3321 [2021-11-03 05:44:22,790 INFO L226 Difference]: Without dead ends: 2271 [2021-11-03 05:44:22,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2021-11-03 05:44:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2173. [2021-11-03 05:44:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.3089318600368325) internal successors, (2843), 2172 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2843 transitions. [2021-11-03 05:44:26,117 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2843 transitions. Word has length 150 [2021-11-03 05:44:26,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:26,118 INFO L470 AbstractCegarLoop]: Abstraction has 2173 states and 2843 transitions. [2021-11-03 05:44:26,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2843 transitions. [2021-11-03 05:44:26,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-03 05:44:26,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:26,118 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:26,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-03 05:44:26,119 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:26,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:26,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1475492617, now seen corresponding path program 1 times [2021-11-03 05:44:26,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:26,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799608849] [2021-11-03 05:44:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:26,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:26,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:26,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799608849] [2021-11-03 05:44:26,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799608849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:26,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:26,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:44:26,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777341021] [2021-11-03 05:44:26,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:26,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:26,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:26,202 INFO L87 Difference]: Start difference. First operand 2173 states and 2843 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:32,799 INFO L93 Difference]: Finished difference Result 6177 states and 8157 transitions. [2021-11-03 05:44:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:32,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-03 05:44:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:32,803 INFO L225 Difference]: With dead ends: 6177 [2021-11-03 05:44:32,803 INFO L226 Difference]: Without dead ends: 4175 [2021-11-03 05:44:32,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:32,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2021-11-03 05:44:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 3981. [2021-11-03 05:44:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3980 states have (on average 1.3092964824120603) internal successors, (5211), 3980 states have internal predecessors, (5211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 5211 transitions. [2021-11-03 05:44:39,378 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 5211 transitions. Word has length 153 [2021-11-03 05:44:39,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:39,378 INFO L470 AbstractCegarLoop]: Abstraction has 3981 states and 5211 transitions. [2021-11-03 05:44:39,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 5211 transitions. [2021-11-03 05:44:39,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-03 05:44:39,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:39,379 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:44:39,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-03 05:44:39,379 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:44:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1576468746, now seen corresponding path program 1 times [2021-11-03 05:44:39,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:44:39,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444063973] [2021-11-03 05:44:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:39,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:44:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:44:39,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:44:39,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444063973] [2021-11-03 05:44:39,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444063973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:39,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:39,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:44:39,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877581893] [2021-11-03 05:44:39,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:39,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:44:39,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:39,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:39,442 INFO L87 Difference]: Start difference. First operand 3981 states and 5211 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:52,358 INFO L93 Difference]: Finished difference Result 11601 states and 15261 transitions. [2021-11-03 05:44:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:52,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2021-11-03 05:44:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:52,365 INFO L225 Difference]: With dead ends: 11601 [2021-11-03 05:44:52,365 INFO L226 Difference]: Without dead ends: 7791 [2021-11-03 05:44:52,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:44:52,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7791 states. [2021-11-03 05:45:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 7405. [2021-11-03 05:45:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7405 states, 7404 states have (on average 1.3045650999459752) internal successors, (9659), 7404 states have internal predecessors, (9659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 9659 transitions. [2021-11-03 05:45:04,943 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 9659 transitions. Word has length 156 [2021-11-03 05:45:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:04,943 INFO L470 AbstractCegarLoop]: Abstraction has 7405 states and 9659 transitions. [2021-11-03 05:45:04,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 9659 transitions. [2021-11-03 05:45:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-03 05:45:04,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:04,944 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:45:04,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-03 05:45:04,944 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:45:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:04,945 INFO L85 PathProgramCache]: Analyzing trace with hash -409619861, now seen corresponding path program 1 times [2021-11-03 05:45:04,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:04,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708675504] [2021-11-03 05:45:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:04,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:05,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:05,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708675504] [2021-11-03 05:45:05,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708675504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:05,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:05,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 05:45:05,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873547260] [2021-11-03 05:45:05,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:45:05,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:05,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:45:05,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:45:05,031 INFO L87 Difference]: Start difference. First operand 7405 states and 9659 transitions. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:43,922 INFO L93 Difference]: Finished difference Result 29916 states and 39320 transitions. [2021-11-03 05:45:43,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:45:43,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-03 05:45:43,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:43,947 INFO L225 Difference]: With dead ends: 29916 [2021-11-03 05:45:43,947 INFO L226 Difference]: Without dead ends: 22682 [2021-11-03 05:45:43,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:45:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22682 states. [2021-11-03 05:46:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22682 to 10087. [2021-11-03 05:46:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10087 states, 10086 states have (on average 1.299722387467777) internal successors, (13109), 10086 states have internal predecessors, (13109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10087 states to 10087 states and 13109 transitions. [2021-11-03 05:46:01,882 INFO L78 Accepts]: Start accepts. Automaton has 10087 states and 13109 transitions. Word has length 159 [2021-11-03 05:46:01,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:01,882 INFO L470 AbstractCegarLoop]: Abstraction has 10087 states and 13109 transitions. [2021-11-03 05:46:01,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 10087 states and 13109 transitions. [2021-11-03 05:46:01,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-03 05:46:01,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:01,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:46:01,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-03 05:46:01,883 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:46:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:01,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1479712535, now seen corresponding path program 1 times [2021-11-03 05:46:01,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:01,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827972593] [2021-11-03 05:46:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:01,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:46:01,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:01,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827972593] [2021-11-03 05:46:01,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827972593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:01,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:01,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:46:01,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730483290] [2021-11-03 05:46:01,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:46:01,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:01,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:46:01,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:46:01,938 INFO L87 Difference]: Start difference. First operand 10087 states and 13109 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:24,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:24,420 INFO L93 Difference]: Finished difference Result 22629 states and 29489 transitions. [2021-11-03 05:46:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:46:24,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-11-03 05:46:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:24,433 INFO L225 Difference]: With dead ends: 22629 [2021-11-03 05:46:24,433 INFO L226 Difference]: Without dead ends: 12713 [2021-11-03 05:46:24,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:46:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-03 05:46:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12711. [2021-11-03 05:46:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12710 states have (on average 1.2930763178599527) internal successors, (16435), 12710 states have internal predecessors, (16435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 16435 transitions. [2021-11-03 05:46:46,828 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 16435 transitions. Word has length 161 [2021-11-03 05:46:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:46,828 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 16435 transitions. [2021-11-03 05:46:46,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 16435 transitions. [2021-11-03 05:46:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-03 05:46:46,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:46,829 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:46:46,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-03 05:46:46,829 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:46:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1109840349, now seen corresponding path program 1 times [2021-11-03 05:46:46,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:46,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773621112] [2021-11-03 05:46:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:46,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:46:47,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:47,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773621112] [2021-11-03 05:46:47,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773621112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:47,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:47,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 05:46:47,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871339728] [2021-11-03 05:46:47,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:46:47,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:46:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:47,014 INFO L87 Difference]: Start difference. First operand 12711 states and 16435 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:09,220 INFO L93 Difference]: Finished difference Result 25253 states and 32685 transitions. [2021-11-03 05:47:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:47:09,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-11-03 05:47:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:09,234 INFO L225 Difference]: With dead ends: 25253 [2021-11-03 05:47:09,234 INFO L226 Difference]: Without dead ends: 12713 [2021-11-03 05:47:09,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:47:09,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-03 05:47:31,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12711. [2021-11-03 05:47:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12710 states have (on average 1.292918961447679) internal successors, (16433), 12710 states have internal predecessors, (16433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 16433 transitions. [2021-11-03 05:47:31,608 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 16433 transitions. Word has length 161 [2021-11-03 05:47:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:31,609 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 16433 transitions. [2021-11-03 05:47:31,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 16433 transitions. [2021-11-03 05:47:31,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-03 05:47:31,609 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:31,609 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:31,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-03 05:47:31,610 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:47:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2138110864, now seen corresponding path program 1 times [2021-11-03 05:47:31,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:31,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670624573] [2021-11-03 05:47:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:31,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:31,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:31,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670624573] [2021-11-03 05:47:31,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670624573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:31,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:31,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:47:31,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420767772] [2021-11-03 05:47:31,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:47:31,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:31,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:47:31,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:47:31,706 INFO L87 Difference]: Start difference. First operand 12711 states and 16433 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:04,631 INFO L93 Difference]: Finished difference Result 18509 states and 23588 transitions. [2021-11-03 05:48:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:48:04,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2021-11-03 05:48:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:04,650 INFO L225 Difference]: With dead ends: 18509 [2021-11-03 05:48:04,650 INFO L226 Difference]: Without dead ends: 18507 [2021-11-03 05:48:04,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:48:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18507 states. [2021-11-03 05:48:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18507 to 12711. [2021-11-03 05:48:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12710 states have (on average 1.2778127458693942) internal successors, (16241), 12710 states have internal predecessors, (16241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 16241 transitions. [2021-11-03 05:48:27,328 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 16241 transitions. Word has length 162 [2021-11-03 05:48:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:27,328 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 16241 transitions. [2021-11-03 05:48:27,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 16241 transitions. [2021-11-03 05:48:27,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-03 05:48:27,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:27,330 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:27,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-03 05:48:27,330 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:48:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash 426374333, now seen corresponding path program 1 times [2021-11-03 05:48:27,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:48:27,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464605076] [2021-11-03 05:48:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:27,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:48:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-03 05:48:27,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:48:27,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464605076] [2021-11-03 05:48:27,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464605076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:27,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:48:27,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:48:27,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018320304] [2021-11-03 05:48:27,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:48:27,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:48:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:48:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:48:27,472 INFO L87 Difference]: Start difference. First operand 12711 states and 16241 transitions. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:02,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:02,300 INFO L93 Difference]: Finished difference Result 32167 states and 41118 transitions. [2021-11-03 05:49:02,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:49:02,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 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 182 [2021-11-03 05:49:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:02,321 INFO L225 Difference]: With dead ends: 32167 [2021-11-03 05:49:02,321 INFO L226 Difference]: Without dead ends: 19613 [2021-11-03 05:49:02,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:49:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19613 states. [2021-11-03 05:49:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19613 to 12711. [2021-11-03 05:49:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12710 states have (on average 1.2776553894571203) internal successors, (16239), 12710 states have internal predecessors, (16239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 16239 transitions. [2021-11-03 05:49:25,078 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 16239 transitions. Word has length 182 [2021-11-03 05:49:25,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:25,078 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 16239 transitions. [2021-11-03 05:49:25,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:25,078 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 16239 transitions. [2021-11-03 05:49:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-03 05:49:25,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:25,079 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:25,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-03 05:49:25,080 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 05:49:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash -616679166, now seen corresponding path program 1 times [2021-11-03 05:49:25,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:49:25,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957086209] [2021-11-03 05:49:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:25,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:49:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:34,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:49:34,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957086209] [2021-11-03 05:49:34,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957086209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:49:34,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295651267] [2021-11-03 05:49:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:34,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:49:34,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:49:34,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:49:34,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867fdaeb-195a-4d2b-9044-e606fdcb4e57/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 05:49:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:35,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-03 05:49:35,255 INFO L286 TraceCheckSpWp]: Computing forward predicates...