./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-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_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/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_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/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_9eae7845-3ec3-4f25-b096-b797e02be6cd/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 9fc434c98d81d50ebbaaf1f0c0ad7b0d03fbdae2db606436a34b66c07c286ced --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:21:44,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:21:44,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:21:44,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:21:44,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:21:44,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:21:44,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:21:44,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:21:44,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:21:44,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:21:44,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:21:44,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:21:44,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:21:44,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:21:44,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:21:44,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:21:44,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:21:44,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:21:44,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:21:44,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:21:44,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:21:44,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:21:44,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:21:44,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:21:44,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:21:44,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:21:44,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:21:44,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:21:44,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:21:44,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:21:44,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:21:44,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:21:44,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:21:44,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:21:44,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:21:44,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:21:44,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:21:44,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:21:44,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:21:44,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:21:44,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:21:44,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:21:44,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:21:44,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:21:44,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:21:44,323 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:21:44,323 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:21:44,323 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:21:44,324 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:21:44,324 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:21:44,324 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:21:44,324 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:21:44,331 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:21:44,331 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:21:44,332 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:21:44,332 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:21:44,332 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:21:44,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:21:44,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:21:44,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:21:44,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:21:44,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:21:44,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:21:44,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:21:44,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:21:44,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:21:44,335 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:21:44,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:21:44,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:21:44,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:21:44,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:21:44,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:21:44,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:21:44,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:21:44,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:21:44,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:21:44,338 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:21:44,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:21:44,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:21:44,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:21:44,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:21:44,339 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fc434c98d81d50ebbaaf1f0c0ad7b0d03fbdae2db606436a34b66c07c286ced [2021-11-03 05:21:44,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:21:44,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:21:44,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:21:44,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:21:44,605 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:21:44,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2021-11-03 05:21:44,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/data/54dc9def7/566bf0c47c81446e9e34515cf82baf4a/FLAG0a26a494c [2021-11-03 05:21:45,673 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:21:45,674 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2021-11-03 05:21:45,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/data/54dc9def7/566bf0c47c81446e9e34515cf82baf4a/FLAG0a26a494c [2021-11-03 05:21:46,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/data/54dc9def7/566bf0c47c81446e9e34515cf82baf4a [2021-11-03 05:21:46,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:21:46,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:21:46,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:21:46,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:21:46,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:21:46,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:21:46" (1/1) ... [2021-11-03 05:21:46,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55384b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:46, skipping insertion in model container [2021-11-03 05:21:46,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:21:46" (1/1) ... [2021-11-03 05:21:46,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:21:46,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:21:47,256 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[22358,22371] [2021-11-03 05:21:47,295 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[28268,28281] [2021-11-03 05:21:47,307 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[29690,29703] [2021-11-03 05:21:47,316 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[30548,30561] [2021-11-03 05:21:47,330 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[32341,32354] [2021-11-03 05:21:47,349 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[33199,33212] [2021-11-03 05:21:47,363 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[34428,34441] [2021-11-03 05:21:47,395 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[37283,37296] [2021-11-03 05:21:47,404 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[38144,38157] [2021-11-03 05:21:47,415 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[39376,39389] [2021-11-03 05:21:47,433 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[41667,41680] [2021-11-03 05:21:47,463 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[46092,46105] [2021-11-03 05:21:47,472 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[46953,46966] [2021-11-03 05:21:47,482 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[48185,48198] [2021-11-03 05:21:47,499 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[50476,50489] [2021-11-03 05:21:47,524 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[54337,54350] [2021-11-03 05:21:47,567 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[61299,61312] [2021-11-03 05:21:47,574 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[62160,62173] [2021-11-03 05:21:47,583 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[63392,63405] [2021-11-03 05:21:47,600 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[65683,65696] [2021-11-03 05:21:47,625 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[69544,69557] [2021-11-03 05:21:47,663 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[75942,75955] [2021-11-03 05:21:47,725 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[87347,87360] [2021-11-03 05:21:47,732 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[88208,88221] [2021-11-03 05:21:47,742 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[89401,89414] [2021-11-03 05:21:47,758 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[91653,91666] [2021-11-03 05:21:47,786 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[95755,95768] [2021-11-03 05:21:47,843 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[103009,103022] [2021-11-03 05:21:47,917 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[115656,115669] [2021-11-03 05:21:48,033 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[137951,137964] [2021-11-03 05:21:48,040 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[138812,138825] [2021-11-03 05:21:48,049 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[140044,140057] [2021-11-03 05:21:48,065 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[142335,142348] [2021-11-03 05:21:48,088 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[146196,146209] [2021-11-03 05:21:48,123 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[152594,152607] [2021-11-03 05:21:48,179 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[163435,163448] [2021-11-03 05:21:48,267 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[182075,182088] [2021-11-03 05:21:50,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:21:50,158 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:21:50,358 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[22358,22371] [2021-11-03 05:21:50,380 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[28268,28281] [2021-11-03 05:21:50,390 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[29690,29703] [2021-11-03 05:21:50,396 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[30548,30561] [2021-11-03 05:21:50,406 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[32341,32354] [2021-11-03 05:21:50,413 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[33199,33212] [2021-11-03 05:21:50,421 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[34428,34441] [2021-11-03 05:21:50,437 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[37283,37296] [2021-11-03 05:21:50,443 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[38144,38157] [2021-11-03 05:21:50,451 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[39376,39389] [2021-11-03 05:21:50,465 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[41667,41680] [2021-11-03 05:21:50,488 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[46092,46105] [2021-11-03 05:21:50,519 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[46953,46966] [2021-11-03 05:21:50,527 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[48185,48198] [2021-11-03 05:21:50,541 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[50476,50489] [2021-11-03 05:21:50,562 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[54337,54350] [2021-11-03 05:21:50,595 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[61299,61312] [2021-11-03 05:21:50,602 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[62160,62173] [2021-11-03 05:21:50,609 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[63392,63405] [2021-11-03 05:21:50,622 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[65683,65696] [2021-11-03 05:21:50,643 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[69544,69557] [2021-11-03 05:21:50,674 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[75942,75955] [2021-11-03 05:21:50,724 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[87347,87360] [2021-11-03 05:21:50,731 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[88208,88221] [2021-11-03 05:21:50,740 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[89401,89414] [2021-11-03 05:21:50,753 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[91653,91666] [2021-11-03 05:21:50,777 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[95755,95768] [2021-11-03 05:21:50,815 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[103009,103022] [2021-11-03 05:21:50,877 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[115656,115669] [2021-11-03 05:21:50,983 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[137951,137964] [2021-11-03 05:21:50,990 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[138812,138825] [2021-11-03 05:21:50,998 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[140044,140057] [2021-11-03 05:21:51,011 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[142335,142348] [2021-11-03 05:21:51,031 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[146196,146209] [2021-11-03 05:21:51,062 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[152594,152607] [2021-11-03 05:21:51,110 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[163435,163448] [2021-11-03 05:21:51,185 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_9eae7845-3ec3-4f25-b096-b797e02be6cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c[182075,182088] [2021-11-03 05:21:52,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:21:52,805 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:21:52,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52 WrapperNode [2021-11-03 05:21:52,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:21:52,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:21:52,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:21:52,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:21:52,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:52,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:53,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:21:53,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:21:53,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:21:53,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:21:53,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:53,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:53,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:53,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:53,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:53,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:53,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:54,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:21:54,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:21:54,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:21:54,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:21:54,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (1/1) ... [2021-11-03 05:21:54,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:21:54,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:21:54,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:21:54,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eae7845-3ec3-4f25-b096-b797e02be6cd/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:21:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:21:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:21:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:21:54,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:22:06,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:22:06,296 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:22:06,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:06 BoogieIcfgContainer [2021-11-03 05:22:06,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:22:06,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:22:06,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:22:06,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:22:06,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:21:46" (1/3) ... [2021-11-03 05:22:06,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b85578f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:22:06, skipping insertion in model container [2021-11-03 05:22:06,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:52" (2/3) ... [2021-11-03 05:22:06,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b85578f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:22:06, skipping insertion in model container [2021-11-03 05:22:06,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:06" (3/3) ... [2021-11-03 05:22:06,313 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2021-11-03 05:22:06,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:22:06,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-11-03 05:22:06,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:22:06,395 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 05:22:06,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-11-03 05:22:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 3694 states, 3656 states have (on average 1.87554704595186) internal successors, (6857), 3693 states have internal predecessors, (6857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 05:22:06,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:06,504 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 05:22:06,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:06,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:06,510 INFO L85 PathProgramCache]: Analyzing trace with hash 970242633, now seen corresponding path program 1 times [2021-11-03 05:22:06,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:06,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196597405] [2021-11-03 05:22:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:06,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:07,185 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 05:22:07,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:07,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196597405] [2021-11-03 05:22:07,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196597405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:07,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:07,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:22:07,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551312503] [2021-11-03 05:22:07,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:22:07,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:07,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:22:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:22:07,218 INFO L87 Difference]: Start difference. First operand has 3694 states, 3656 states have (on average 1.87554704595186) internal successors, (6857), 3693 states have internal predecessors, (6857), 0 states have call successors, (0), 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 23.2) internal successors, (116), 4 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 05:22:10,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:10,020 INFO L93 Difference]: Finished difference Result 5283 states and 9499 transitions. [2021-11-03 05:22:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:22:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 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 05:22:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:10,068 INFO L225 Difference]: With dead ends: 5283 [2021-11-03 05:22:10,068 INFO L226 Difference]: Without dead ends: 2860 [2021-11-03 05:22:10,080 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 05:22:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-11-03 05:22:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2860. [2021-11-03 05:22:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2823 states have (on average 1.2851576337229897) internal successors, (3628), 2859 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 3628 transitions. [2021-11-03 05:22:10,283 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 3628 transitions. Word has length 116 [2021-11-03 05:22:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:10,285 INFO L470 AbstractCegarLoop]: Abstraction has 2860 states and 3628 transitions. [2021-11-03 05:22:10,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 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 05:22:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 3628 transitions. [2021-11-03 05:22:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-03 05:22:10,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:10,294 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] [2021-11-03 05:22:10,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:22:10,296 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:10,301 INFO L85 PathProgramCache]: Analyzing trace with hash 716802334, now seen corresponding path program 1 times [2021-11-03 05:22:10,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:10,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536529287] [2021-11-03 05:22:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:10,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:10,508 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 05:22:10,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:10,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536529287] [2021-11-03 05:22:10,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536529287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:10,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:10,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:22:10,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147271878] [2021-11-03 05:22:10,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:22:10,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:10,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:22:10,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:22:10,512 INFO L87 Difference]: Start difference. First operand 2860 states and 3628 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:12,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:12,284 INFO L93 Difference]: Finished difference Result 4443 states and 5852 transitions. [2021-11-03 05:22:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:22:12,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-03 05:22:12,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:12,301 INFO L225 Difference]: With dead ends: 4443 [2021-11-03 05:22:12,301 INFO L226 Difference]: Without dead ends: 2264 [2021-11-03 05:22:12,305 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 05:22:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-11-03 05:22:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2264. [2021-11-03 05:22:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 2227 states have (on average 1.3322855859901213) internal successors, (2967), 2263 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 2967 transitions. [2021-11-03 05:22:12,401 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 2967 transitions. Word has length 117 [2021-11-03 05:22:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:12,402 INFO L470 AbstractCegarLoop]: Abstraction has 2264 states and 2967 transitions. [2021-11-03 05:22:12,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 2967 transitions. [2021-11-03 05:22:12,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 05:22:12,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:12,415 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 05:22:12,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:22:12,415 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:12,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1403949894, now seen corresponding path program 1 times [2021-11-03 05:22:12,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:12,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813838315] [2021-11-03 05:22:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:12,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:12,628 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 05:22:12,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:12,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813838315] [2021-11-03 05:22:12,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813838315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:12,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:12,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:22:12,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528138097] [2021-11-03 05:22:12,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:22:12,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:12,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:22:12,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:22:12,632 INFO L87 Difference]: Start difference. First operand 2264 states and 2967 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 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 05:22:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:14,798 INFO L93 Difference]: Finished difference Result 3847 states and 5190 transitions. [2021-11-03 05:22:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:22:14,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 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 05:22:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:14,813 INFO L225 Difference]: With dead ends: 3847 [2021-11-03 05:22:14,814 INFO L226 Difference]: Without dead ends: 2104 [2021-11-03 05:22:14,817 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 05:22:14,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2021-11-03 05:22:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2104. [2021-11-03 05:22:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2067 states have (on average 1.3420416061925495) internal successors, (2774), 2103 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 2774 transitions. [2021-11-03 05:22:14,925 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 2774 transitions. Word has length 118 [2021-11-03 05:22:14,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:14,926 INFO L470 AbstractCegarLoop]: Abstraction has 2104 states and 2774 transitions. [2021-11-03 05:22:14,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 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 05:22:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 2774 transitions. [2021-11-03 05:22:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-03 05:22:14,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:14,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:14,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 05:22:14,933 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:14,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1175064949, now seen corresponding path program 1 times [2021-11-03 05:22:14,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:14,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059689594] [2021-11-03 05:22:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:14,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:15,147 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 05:22:15,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:15,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059689594] [2021-11-03 05:22:15,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059689594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:15,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:15,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:22:15,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901195672] [2021-11-03 05:22:15,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:22:15,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:15,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:22:15,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:22:15,155 INFO L87 Difference]: Start difference. First operand 2104 states and 2774 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 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 05:22:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:16,660 INFO L93 Difference]: Finished difference Result 3687 states and 4996 transitions. [2021-11-03 05:22:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:22:16,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 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 05:22:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:16,670 INFO L225 Difference]: With dead ends: 3687 [2021-11-03 05:22:16,671 INFO L226 Difference]: Without dead ends: 1928 [2021-11-03 05:22:16,674 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 05:22:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-11-03 05:22:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1928. [2021-11-03 05:22:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1891 states have (on average 1.364886303543099) internal successors, (2581), 1927 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 2581 transitions. [2021-11-03 05:22:16,777 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 2581 transitions. Word has length 119 [2021-11-03 05:22:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:16,778 INFO L470 AbstractCegarLoop]: Abstraction has 1928 states and 2581 transitions. [2021-11-03 05:22:16,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 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 05:22:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 2581 transitions. [2021-11-03 05:22:16,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-03 05:22:16,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:16,784 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] [2021-11-03 05:22:16,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 05:22:16,785 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:16,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash -454932709, now seen corresponding path program 1 times [2021-11-03 05:22:16,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:16,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114536979] [2021-11-03 05:22:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:16,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:16,917 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 05:22:16,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:16,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114536979] [2021-11-03 05:22:16,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114536979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:16,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:16,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:22:16,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745983864] [2021-11-03 05:22:16,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:22:16,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:16,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:22:16,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:22:16,920 INFO L87 Difference]: Start difference. First operand 1928 states and 2581 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:18,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:18,325 INFO L93 Difference]: Finished difference Result 3511 states and 4802 transitions. [2021-11-03 05:22:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:22:18,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-03 05:22:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:18,336 INFO L225 Difference]: With dead ends: 3511 [2021-11-03 05:22:18,336 INFO L226 Difference]: Without dead ends: 1804 [2021-11-03 05:22:18,339 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 05:22:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-11-03 05:22:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1804. [2021-11-03 05:22:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1767 states have (on average 1.3853989813242784) internal successors, (2448), 1803 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2448 transitions. [2021-11-03 05:22:18,444 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2448 transitions. Word has length 120 [2021-11-03 05:22:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:18,444 INFO L470 AbstractCegarLoop]: Abstraction has 1804 states and 2448 transitions. [2021-11-03 05:22:18,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2448 transitions. [2021-11-03 05:22:18,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-03 05:22:18,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:18,452 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] [2021-11-03 05:22:18,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 05:22:18,452 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:18,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2030592158, now seen corresponding path program 1 times [2021-11-03 05:22:18,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:18,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817283753] [2021-11-03 05:22:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:18,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:18,615 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 05:22:18,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:18,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817283753] [2021-11-03 05:22:18,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817283753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:18,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:18,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:22:18,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445021005] [2021-11-03 05:22:18,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:22:18,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:22:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:22:18,623 INFO L87 Difference]: Start difference. First operand 1804 states and 2448 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:19,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:19,792 INFO L93 Difference]: Finished difference Result 3387 states and 4668 transitions. [2021-11-03 05:22:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:22:19,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-03 05:22:19,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:19,802 INFO L225 Difference]: With dead ends: 3387 [2021-11-03 05:22:19,802 INFO L226 Difference]: Without dead ends: 1730 [2021-11-03 05:22:19,804 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 05:22:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2021-11-03 05:22:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1730. [2021-11-03 05:22:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1693 states have (on average 1.3992911990549322) internal successors, (2369), 1729 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2369 transitions. [2021-11-03 05:22:19,897 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2369 transitions. Word has length 121 [2021-11-03 05:22:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:19,898 INFO L470 AbstractCegarLoop]: Abstraction has 1730 states and 2369 transitions. [2021-11-03 05:22:19,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2369 transitions. [2021-11-03 05:22:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 05:22:19,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:19,903 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] [2021-11-03 05:22:19,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 05:22:19,903 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash 541891792, now seen corresponding path program 1 times [2021-11-03 05:22:19,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:19,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190777931] [2021-11-03 05:22:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:19,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:20,054 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 05:22:20,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:20,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190777931] [2021-11-03 05:22:20,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190777931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:20,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:20,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:22:20,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459649419] [2021-11-03 05:22:20,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:22:20,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:20,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:22:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:22:20,057 INFO L87 Difference]: Start difference. First operand 1730 states and 2369 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:21,843 INFO L93 Difference]: Finished difference Result 4245 states and 5873 transitions. [2021-11-03 05:22:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:22:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 05:22:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:21,859 INFO L225 Difference]: With dead ends: 4245 [2021-11-03 05:22:21,860 INFO L226 Difference]: Without dead ends: 2622 [2021-11-03 05:22:21,863 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 05:22:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2021-11-03 05:22:22,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2496. [2021-11-03 05:22:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2459 states have (on average 1.4278161854412363) internal successors, (3511), 2495 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3511 transitions. [2021-11-03 05:22:22,025 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3511 transitions. Word has length 122 [2021-11-03 05:22:22,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:22,027 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3511 transitions. [2021-11-03 05:22:22,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:22,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3511 transitions. [2021-11-03 05:22:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-03 05:22:22,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:22,033 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] [2021-11-03 05:22:22,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 05:22:22,034 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:22,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:22,034 INFO L85 PathProgramCache]: Analyzing trace with hash -965925399, now seen corresponding path program 1 times [2021-11-03 05:22:22,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:22,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184389356] [2021-11-03 05:22:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:22,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:22,161 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 05:22:22,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:22,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184389356] [2021-11-03 05:22:22,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184389356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:22,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:22,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:22:22,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853768941] [2021-11-03 05:22:22,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:22:22,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:22:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:22:22,164 INFO L87 Difference]: Start difference. First operand 2496 states and 3511 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:23,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:23,499 INFO L93 Difference]: Finished difference Result 4885 states and 6914 transitions. [2021-11-03 05:22:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:22:23,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-03 05:22:23,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:23,510 INFO L225 Difference]: With dead ends: 4885 [2021-11-03 05:22:23,511 INFO L226 Difference]: Without dead ends: 2482 [2021-11-03 05:22:23,514 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 05:22:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-11-03 05:22:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2482. [2021-11-03 05:22:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.429038854805726) internal successors, (3494), 2481 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3494 transitions. [2021-11-03 05:22:23,678 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3494 transitions. Word has length 123 [2021-11-03 05:22:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:23,679 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3494 transitions. [2021-11-03 05:22:23,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3494 transitions. [2021-11-03 05:22:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 05:22:23,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:23,685 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] [2021-11-03 05:22:23,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 05:22:23,686 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash 724063685, now seen corresponding path program 1 times [2021-11-03 05:22:23,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:23,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177329737] [2021-11-03 05:22:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:23,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:23,926 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 05:22:23,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:23,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177329737] [2021-11-03 05:22:23,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177329737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:23,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:23,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 05:22:23,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071996190] [2021-11-03 05:22:23,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:22:23,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:22:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:22:23,928 INFO L87 Difference]: Start difference. First operand 2482 states and 3494 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:27,949 INFO L93 Difference]: Finished difference Result 4206 states and 5853 transitions. [2021-11-03 05:22:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:22:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 05:22:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:27,972 INFO L225 Difference]: With dead ends: 4206 [2021-11-03 05:22:27,972 INFO L226 Difference]: Without dead ends: 4026 [2021-11-03 05:22:27,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:22:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-11-03 05:22:28,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 2482. [2021-11-03 05:22:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4282208588957055) internal successors, (3492), 2481 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3492 transitions. [2021-11-03 05:22:28,314 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3492 transitions. Word has length 124 [2021-11-03 05:22:28,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:28,314 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3492 transitions. [2021-11-03 05:22:28,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3492 transitions. [2021-11-03 05:22:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 05:22:28,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:28,321 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] [2021-11-03 05:22:28,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 05:22:28,322 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:28,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 315218457, now seen corresponding path program 1 times [2021-11-03 05:22:28,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:28,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731283523] [2021-11-03 05:22:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:28,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:28,550 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 05:22:28,550 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:28,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731283523] [2021-11-03 05:22:28,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731283523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:28,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:28,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 05:22:28,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788950383] [2021-11-03 05:22:28,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:22:28,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:22:28,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:22:28,553 INFO L87 Difference]: Start difference. First operand 2482 states and 3492 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:31,391 INFO L93 Difference]: Finished difference Result 4059 states and 5477 transitions. [2021-11-03 05:22:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:22:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 05:22:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:31,406 INFO L225 Difference]: With dead ends: 4059 [2021-11-03 05:22:31,406 INFO L226 Difference]: Without dead ends: 3067 [2021-11-03 05:22:31,409 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 05:22:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2021-11-03 05:22:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 2482. [2021-11-03 05:22:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4278118609406953) internal successors, (3491), 2481 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3491 transitions. [2021-11-03 05:22:31,641 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3491 transitions. Word has length 124 [2021-11-03 05:22:31,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:31,642 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3491 transitions. [2021-11-03 05:22:31,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3491 transitions. [2021-11-03 05:22:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 05:22:31,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:31,648 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] [2021-11-03 05:22:31,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 05:22:31,648 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:31,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2082888358, now seen corresponding path program 1 times [2021-11-03 05:22:31,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:31,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796896478] [2021-11-03 05:22:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:31,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:31,839 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 05:22:31,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:31,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796896478] [2021-11-03 05:22:31,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796896478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:31,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:31,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:22:31,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200662587] [2021-11-03 05:22:31,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:22:31,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:31,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:22:31,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:22:31,844 INFO L87 Difference]: Start difference. First operand 2482 states and 3491 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:34,516 INFO L93 Difference]: Finished difference Result 3081 states and 4309 transitions. [2021-11-03 05:22:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:22:34,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 05:22:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:34,535 INFO L225 Difference]: With dead ends: 3081 [2021-11-03 05:22:34,535 INFO L226 Difference]: Without dead ends: 2614 [2021-11-03 05:22:34,537 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 05:22:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2021-11-03 05:22:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2482. [2021-11-03 05:22:34,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.427402862985685) internal successors, (3490), 2481 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3490 transitions. [2021-11-03 05:22:34,812 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3490 transitions. Word has length 124 [2021-11-03 05:22:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:34,813 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3490 transitions. [2021-11-03 05:22:34,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:34,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3490 transitions. [2021-11-03 05:22:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 05:22:34,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:34,818 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] [2021-11-03 05:22:34,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 05:22:34,819 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash 722590670, now seen corresponding path program 1 times [2021-11-03 05:22:34,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:34,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703494340] [2021-11-03 05:22:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:34,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:35,014 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 05:22:35,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:35,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703494340] [2021-11-03 05:22:35,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703494340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:35,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:35,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:22:35,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891761982] [2021-11-03 05:22:35,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:22:35,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:22:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:22:35,017 INFO L87 Difference]: Start difference. First operand 2482 states and 3490 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:38,103 INFO L93 Difference]: Finished difference Result 4074 states and 5628 transitions. [2021-11-03 05:22:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:22:38,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 05:22:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:38,112 INFO L225 Difference]: With dead ends: 4074 [2021-11-03 05:22:38,112 INFO L226 Difference]: Without dead ends: 3938 [2021-11-03 05:22:38,114 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 05:22:38,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2021-11-03 05:22:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 2482. [2021-11-03 05:22:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4269938650306748) internal successors, (3489), 2481 states have internal predecessors, (3489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3489 transitions. [2021-11-03 05:22:38,339 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3489 transitions. Word has length 124 [2021-11-03 05:22:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:38,340 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3489 transitions. [2021-11-03 05:22:38,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3489 transitions. [2021-11-03 05:22:38,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:22:38,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:38,343 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] [2021-11-03 05:22:38,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 05:22:38,344 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash 46269361, now seen corresponding path program 1 times [2021-11-03 05:22:38,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:38,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299820651] [2021-11-03 05:22:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:38,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:38,520 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 05:22:38,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:38,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299820651] [2021-11-03 05:22:38,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299820651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:38,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:38,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:22:38,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945737656] [2021-11-03 05:22:38,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:22:38,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:22:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:22:38,523 INFO L87 Difference]: Start difference. First operand 2482 states and 3489 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:41,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:41,692 INFO L93 Difference]: Finished difference Result 4394 states and 6127 transitions. [2021-11-03 05:22:41,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:22:41,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-03 05:22:41,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:41,702 INFO L225 Difference]: With dead ends: 4394 [2021-11-03 05:22:41,702 INFO L226 Difference]: Without dead ends: 4072 [2021-11-03 05:22:41,704 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 05:22:41,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2021-11-03 05:22:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 2482. [2021-11-03 05:22:41,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4265848670756647) internal successors, (3488), 2481 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3488 transitions. [2021-11-03 05:22:41,908 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3488 transitions. Word has length 126 [2021-11-03 05:22:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:41,909 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3488 transitions. [2021-11-03 05:22:41,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3488 transitions. [2021-11-03 05:22:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:22:41,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:41,914 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] [2021-11-03 05:22:41,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 05:22:41,915 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1752134947, now seen corresponding path program 1 times [2021-11-03 05:22:41,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:41,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092769568] [2021-11-03 05:22:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:41,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:42,110 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 05:22:42,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:42,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092769568] [2021-11-03 05:22:42,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092769568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:42,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:42,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:22:42,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491235287] [2021-11-03 05:22:42,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:22:42,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:42,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:22:42,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:22:42,112 INFO L87 Difference]: Start difference. First operand 2482 states and 3488 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:45,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:45,727 INFO L93 Difference]: Finished difference Result 4309 states and 6015 transitions. [2021-11-03 05:22:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:22:45,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-03 05:22:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:45,735 INFO L225 Difference]: With dead ends: 4309 [2021-11-03 05:22:45,735 INFO L226 Difference]: Without dead ends: 4106 [2021-11-03 05:22:45,737 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 05:22:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2021-11-03 05:22:46,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 2482. [2021-11-03 05:22:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4261758691206543) internal successors, (3487), 2481 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3487 transitions. [2021-11-03 05:22:46,024 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3487 transitions. Word has length 126 [2021-11-03 05:22:46,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:46,024 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3487 transitions. [2021-11-03 05:22:46,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3487 transitions. [2021-11-03 05:22:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:22:46,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:46,030 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] [2021-11-03 05:22:46,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 05:22:46,030 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1897230653, now seen corresponding path program 1 times [2021-11-03 05:22:46,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:46,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663809969] [2021-11-03 05:22:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:46,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:46,201 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 05:22:46,201 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:46,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663809969] [2021-11-03 05:22:46,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663809969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:46,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:46,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:22:46,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21915106] [2021-11-03 05:22:46,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:22:46,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:22:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:22:46,203 INFO L87 Difference]: Start difference. First operand 2482 states and 3487 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:49,565 INFO L93 Difference]: Finished difference Result 4366 states and 6094 transitions. [2021-11-03 05:22:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:22:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-03 05:22:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:49,573 INFO L225 Difference]: With dead ends: 4366 [2021-11-03 05:22:49,574 INFO L226 Difference]: Without dead ends: 4072 [2021-11-03 05:22:49,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:22:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2021-11-03 05:22:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 2482. [2021-11-03 05:22:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4257668711656442) internal successors, (3486), 2481 states have internal predecessors, (3486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3486 transitions. [2021-11-03 05:22:49,872 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3486 transitions. Word has length 126 [2021-11-03 05:22:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:49,873 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3486 transitions. [2021-11-03 05:22:49,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3486 transitions. [2021-11-03 05:22:49,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:22:49,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:49,878 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] [2021-11-03 05:22:49,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 05:22:49,879 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:49,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1245745143, now seen corresponding path program 1 times [2021-11-03 05:22:49,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:49,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565602451] [2021-11-03 05:22:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:49,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:50,071 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 05:22:50,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:50,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565602451] [2021-11-03 05:22:50,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565602451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:50,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:50,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:22:50,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160936260] [2021-11-03 05:22:50,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:22:50,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:50,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:22:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:22:50,076 INFO L87 Difference]: Start difference. First operand 2482 states and 3486 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:53,278 INFO L93 Difference]: Finished difference Result 4178 states and 5806 transitions. [2021-11-03 05:22:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:22:53,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-03 05:22:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:53,287 INFO L225 Difference]: With dead ends: 4178 [2021-11-03 05:22:53,287 INFO L226 Difference]: Without dead ends: 4034 [2021-11-03 05:22:53,289 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 05:22:53,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2021-11-03 05:22:53,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 2482. [2021-11-03 05:22:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.425357873210634) internal successors, (3485), 2481 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3485 transitions. [2021-11-03 05:22:53,585 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3485 transitions. Word has length 126 [2021-11-03 05:22:53,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:53,586 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3485 transitions. [2021-11-03 05:22:53,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:53,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3485 transitions. [2021-11-03 05:22:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:22:53,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:53,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:53,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 05:22:53,592 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:53,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1712832126, now seen corresponding path program 1 times [2021-11-03 05:22:53,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:53,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923247127] [2021-11-03 05:22:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:53,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:53,860 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 05:22:53,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:53,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923247127] [2021-11-03 05:22:53,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923247127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:53,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:53,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 05:22:53,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624259835] [2021-11-03 05:22:53,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:22:53,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:22:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:22:53,863 INFO L87 Difference]: Start difference. First operand 2482 states and 3485 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:57,659 INFO L93 Difference]: Finished difference Result 3692 states and 5151 transitions. [2021-11-03 05:22:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 05:22:57,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-03 05:22:57,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:57,666 INFO L225 Difference]: With dead ends: 3692 [2021-11-03 05:22:57,666 INFO L226 Difference]: Without dead ends: 2704 [2021-11-03 05:22:57,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-03 05:22:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2021-11-03 05:22:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2482. [2021-11-03 05:22:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4245398773006135) internal successors, (3483), 2481 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3483 transitions. [2021-11-03 05:22:57,912 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3483 transitions. Word has length 126 [2021-11-03 05:22:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:57,913 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3483 transitions. [2021-11-03 05:22:57,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3483 transitions. [2021-11-03 05:22:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:22:57,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:57,918 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] [2021-11-03 05:22:57,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 05:22:57,919 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:22:57,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash 566046673, now seen corresponding path program 1 times [2021-11-03 05:22:57,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:57,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132434546] [2021-11-03 05:22:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:57,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:58,095 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 05:22:58,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:58,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132434546] [2021-11-03 05:22:58,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132434546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:58,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:58,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:22:58,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569263237] [2021-11-03 05:22:58,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:22:58,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:58,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:22:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:22:58,099 INFO L87 Difference]: Start difference. First operand 2482 states and 3483 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:01,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:01,926 INFO L93 Difference]: Finished difference Result 4412 states and 6163 transitions. [2021-11-03 05:23:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:23:01,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-03 05:23:01,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:01,933 INFO L225 Difference]: With dead ends: 4412 [2021-11-03 05:23:01,933 INFO L226 Difference]: Without dead ends: 4106 [2021-11-03 05:23:01,936 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 05:23:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2021-11-03 05:23:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 2482. [2021-11-03 05:23:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.423721881390593) internal successors, (3481), 2481 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3481 transitions. [2021-11-03 05:23:02,224 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3481 transitions. Word has length 126 [2021-11-03 05:23:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:02,225 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3481 transitions. [2021-11-03 05:23:02,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:02,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3481 transitions. [2021-11-03 05:23:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:23:02,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:02,230 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] [2021-11-03 05:23:02,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 05:23:02,230 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1930516315, now seen corresponding path program 1 times [2021-11-03 05:23:02,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:02,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255495866] [2021-11-03 05:23:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:02,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:02,402 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 05:23:02,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:02,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255495866] [2021-11-03 05:23:02,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255495866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:02,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:02,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:02,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422470391] [2021-11-03 05:23:02,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:02,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:02,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:02,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:02,405 INFO L87 Difference]: Start difference. First operand 2482 states and 3481 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:06,343 INFO L93 Difference]: Finished difference Result 4590 states and 6407 transitions. [2021-11-03 05:23:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:23:06,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-03 05:23:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:06,347 INFO L225 Difference]: With dead ends: 4590 [2021-11-03 05:23:06,347 INFO L226 Difference]: Without dead ends: 4072 [2021-11-03 05:23:06,348 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 05:23:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2021-11-03 05:23:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 2482. [2021-11-03 05:23:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4229038854805727) internal successors, (3479), 2481 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3479 transitions. [2021-11-03 05:23:06,633 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3479 transitions. Word has length 126 [2021-11-03 05:23:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:06,634 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3479 transitions. [2021-11-03 05:23:06,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3479 transitions. [2021-11-03 05:23:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:06,638 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:06,638 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] [2021-11-03 05:23:06,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 05:23:06,639 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash -694037780, now seen corresponding path program 1 times [2021-11-03 05:23:06,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:06,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29046668] [2021-11-03 05:23:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:06,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:06,793 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 05:23:06,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:06,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29046668] [2021-11-03 05:23:06,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29046668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:06,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:06,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:06,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100802560] [2021-11-03 05:23:06,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:06,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:06,796 INFO L87 Difference]: Start difference. First operand 2482 states and 3479 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:09,924 INFO L93 Difference]: Finished difference Result 4074 states and 5617 transitions. [2021-11-03 05:23:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:23:09,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:09,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:09,928 INFO L225 Difference]: With dead ends: 4074 [2021-11-03 05:23:09,928 INFO L226 Difference]: Without dead ends: 3938 [2021-11-03 05:23:09,930 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 05:23:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2021-11-03 05:23:10,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 2482. [2021-11-03 05:23:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4224948875255623) internal successors, (3478), 2481 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3478 transitions. [2021-11-03 05:23:10,275 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3478 transitions. Word has length 128 [2021-11-03 05:23:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:10,275 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3478 transitions. [2021-11-03 05:23:10,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3478 transitions. [2021-11-03 05:23:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:10,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:10,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:10,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 05:23:10,281 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:10,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:10,281 INFO L85 PathProgramCache]: Analyzing trace with hash -816860202, now seen corresponding path program 1 times [2021-11-03 05:23:10,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:10,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581668186] [2021-11-03 05:23:10,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:10,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:10,440 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 05:23:10,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:10,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581668186] [2021-11-03 05:23:10,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581668186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:10,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:10,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:10,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8340299] [2021-11-03 05:23:10,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:10,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:10,443 INFO L87 Difference]: Start difference. First operand 2482 states and 3478 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:14,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:14,380 INFO L93 Difference]: Finished difference Result 4344 states and 6047 transitions. [2021-11-03 05:23:14,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:23:14,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:14,385 INFO L225 Difference]: With dead ends: 4344 [2021-11-03 05:23:14,385 INFO L226 Difference]: Without dead ends: 4106 [2021-11-03 05:23:14,387 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 05:23:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2021-11-03 05:23:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 2482. [2021-11-03 05:23:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4220858895705522) internal successors, (3477), 2481 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3477 transitions. [2021-11-03 05:23:14,645 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3477 transitions. Word has length 128 [2021-11-03 05:23:14,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:14,645 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3477 transitions. [2021-11-03 05:23:14,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:14,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3477 transitions. [2021-11-03 05:23:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:14,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:14,648 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] [2021-11-03 05:23:14,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 05:23:14,648 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:14,649 INFO L85 PathProgramCache]: Analyzing trace with hash 401924492, now seen corresponding path program 1 times [2021-11-03 05:23:14,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:14,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185602547] [2021-11-03 05:23:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:14,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:14,820 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 05:23:14,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:14,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185602547] [2021-11-03 05:23:14,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185602547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:14,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:14,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:14,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839586287] [2021-11-03 05:23:14,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:14,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:14,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:14,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:14,823 INFO L87 Difference]: Start difference. First operand 2482 states and 3477 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:18,922 INFO L93 Difference]: Finished difference Result 4235 states and 5890 transitions. [2021-11-03 05:23:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:23:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:18,927 INFO L225 Difference]: With dead ends: 4235 [2021-11-03 05:23:18,927 INFO L226 Difference]: Without dead ends: 4082 [2021-11-03 05:23:18,929 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 05:23:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-11-03 05:23:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2482. [2021-11-03 05:23:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.421676891615542) internal successors, (3476), 2481 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3476 transitions. [2021-11-03 05:23:19,224 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3476 transitions. Word has length 128 [2021-11-03 05:23:19,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:19,224 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3476 transitions. [2021-11-03 05:23:19,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3476 transitions. [2021-11-03 05:23:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:19,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:19,228 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] [2021-11-03 05:23:19,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 05:23:19,228 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash -878123750, now seen corresponding path program 1 times [2021-11-03 05:23:19,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:19,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597504514] [2021-11-03 05:23:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:19,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:19,385 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 05:23:19,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:19,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597504514] [2021-11-03 05:23:19,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597504514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:19,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:19,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:19,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297391351] [2021-11-03 05:23:19,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:19,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:19,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:19,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:19,388 INFO L87 Difference]: Start difference. First operand 2482 states and 3476 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:22,718 INFO L93 Difference]: Finished difference Result 4074 states and 5613 transitions. [2021-11-03 05:23:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:23:22,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:22,726 INFO L225 Difference]: With dead ends: 4074 [2021-11-03 05:23:22,727 INFO L226 Difference]: Without dead ends: 3938 [2021-11-03 05:23:22,727 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 05:23:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2021-11-03 05:23:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 2482. [2021-11-03 05:23:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4212678936605316) internal successors, (3475), 2481 states have internal predecessors, (3475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3475 transitions. [2021-11-03 05:23:22,974 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3475 transitions. Word has length 128 [2021-11-03 05:23:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:22,975 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3475 transitions. [2021-11-03 05:23:22,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3475 transitions. [2021-11-03 05:23:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:22,978 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:22,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:22,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 05:23:22,979 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash -3968447, now seen corresponding path program 1 times [2021-11-03 05:23:22,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:22,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211520552] [2021-11-03 05:23:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:22,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:23,132 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 05:23:23,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:23,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211520552] [2021-11-03 05:23:23,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211520552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:23,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:23,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:23,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368836497] [2021-11-03 05:23:23,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:23,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:23,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:23,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:23,135 INFO L87 Difference]: Start difference. First operand 2482 states and 3475 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:26,699 INFO L93 Difference]: Finished difference Result 4324 states and 6022 transitions. [2021-11-03 05:23:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:23:26,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:26,703 INFO L225 Difference]: With dead ends: 4324 [2021-11-03 05:23:26,703 INFO L226 Difference]: Without dead ends: 4106 [2021-11-03 05:23:26,704 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 05:23:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2021-11-03 05:23:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 2482. [2021-11-03 05:23:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4208588957055215) internal successors, (3474), 2481 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3474 transitions. [2021-11-03 05:23:26,999 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3474 transitions. Word has length 128 [2021-11-03 05:23:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:26,999 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3474 transitions. [2021-11-03 05:23:26,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3474 transitions. [2021-11-03 05:23:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:27,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:27,004 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] [2021-11-03 05:23:27,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 05:23:27,005 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:27,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1594385788, now seen corresponding path program 1 times [2021-11-03 05:23:27,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:27,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119950428] [2021-11-03 05:23:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:27,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:27,161 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 05:23:27,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:27,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119950428] [2021-11-03 05:23:27,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119950428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:27,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:27,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:27,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009589643] [2021-11-03 05:23:27,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:27,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:27,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:27,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:27,164 INFO L87 Difference]: Start difference. First operand 2482 states and 3474 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:31,101 INFO L93 Difference]: Finished difference Result 4245 states and 5902 transitions. [2021-11-03 05:23:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:23:31,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:31,106 INFO L225 Difference]: With dead ends: 4245 [2021-11-03 05:23:31,106 INFO L226 Difference]: Without dead ends: 4082 [2021-11-03 05:23:31,107 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 05:23:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-11-03 05:23:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2482. [2021-11-03 05:23:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4204498977505113) internal successors, (3473), 2481 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3473 transitions. [2021-11-03 05:23:31,420 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3473 transitions. Word has length 128 [2021-11-03 05:23:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:31,421 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3473 transitions. [2021-11-03 05:23:31,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3473 transitions. [2021-11-03 05:23:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:31,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:31,426 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] [2021-11-03 05:23:31,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 05:23:31,426 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1657919886, now seen corresponding path program 1 times [2021-11-03 05:23:31,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:31,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220948297] [2021-11-03 05:23:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:31,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:31,572 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 05:23:31,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:31,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220948297] [2021-11-03 05:23:31,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220948297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:31,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:31,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:31,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720065135] [2021-11-03 05:23:31,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:31,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:31,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:31,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:31,575 INFO L87 Difference]: Start difference. First operand 2482 states and 3473 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:34,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:34,840 INFO L93 Difference]: Finished difference Result 4172 states and 5781 transitions. [2021-11-03 05:23:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:23:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:34,845 INFO L225 Difference]: With dead ends: 4172 [2021-11-03 05:23:34,845 INFO L226 Difference]: Without dead ends: 4034 [2021-11-03 05:23:34,847 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 05:23:34,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2021-11-03 05:23:35,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 2482. [2021-11-03 05:23:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.420040899795501) internal successors, (3472), 2481 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3472 transitions. [2021-11-03 05:23:35,114 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3472 transitions. Word has length 128 [2021-11-03 05:23:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:35,114 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3472 transitions. [2021-11-03 05:23:35,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3472 transitions. [2021-11-03 05:23:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:35,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:35,118 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] [2021-11-03 05:23:35,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 05:23:35,118 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:35,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:35,118 INFO L85 PathProgramCache]: Analyzing trace with hash 13838730, now seen corresponding path program 1 times [2021-11-03 05:23:35,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:35,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108687115] [2021-11-03 05:23:35,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:35,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:35,273 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 05:23:35,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:35,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108687115] [2021-11-03 05:23:35,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108687115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:35,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:35,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:35,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415867083] [2021-11-03 05:23:35,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:35,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:35,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:35,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:35,275 INFO L87 Difference]: Start difference. First operand 2482 states and 3472 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:39,521 INFO L93 Difference]: Finished difference Result 4301 states and 5986 transitions. [2021-11-03 05:23:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:23:39,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:39,526 INFO L225 Difference]: With dead ends: 4301 [2021-11-03 05:23:39,526 INFO L226 Difference]: Without dead ends: 4106 [2021-11-03 05:23:39,528 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 05:23:39,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2021-11-03 05:23:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 2482. [2021-11-03 05:23:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4196319018404908) internal successors, (3471), 2481 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3471 transitions. [2021-11-03 05:23:39,801 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3471 transitions. Word has length 128 [2021-11-03 05:23:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:39,801 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3471 transitions. [2021-11-03 05:23:39,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3471 transitions. [2021-11-03 05:23:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:39,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:39,807 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] [2021-11-03 05:23:39,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 05:23:39,807 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:39,808 INFO L85 PathProgramCache]: Analyzing trace with hash -740228954, now seen corresponding path program 1 times [2021-11-03 05:23:39,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:39,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728470712] [2021-11-03 05:23:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:39,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:40,047 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 05:23:40,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:40,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728470712] [2021-11-03 05:23:40,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728470712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:40,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:40,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:23:40,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038880016] [2021-11-03 05:23:40,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:23:40,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:40,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:23:40,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:23:40,049 INFO L87 Difference]: Start difference. First operand 2482 states and 3471 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:46,249 INFO L93 Difference]: Finished difference Result 5855 states and 8079 transitions. [2021-11-03 05:23:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:23:46,250 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:46,257 INFO L225 Difference]: With dead ends: 5855 [2021-11-03 05:23:46,257 INFO L226 Difference]: Without dead ends: 5255 [2021-11-03 05:23:46,260 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:23:46,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2021-11-03 05:23:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 2490. [2021-11-03 05:23:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.418263350998777) internal successors, (3479), 2489 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3479 transitions. [2021-11-03 05:23:46,575 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3479 transitions. Word has length 128 [2021-11-03 05:23:46,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:46,576 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3479 transitions. [2021-11-03 05:23:46,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3479 transitions. [2021-11-03 05:23:46,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:46,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:46,580 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] [2021-11-03 05:23:46,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 05:23:46,581 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:46,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:46,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1809116301, now seen corresponding path program 1 times [2021-11-03 05:23:46,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:46,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293525006] [2021-11-03 05:23:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:46,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:46,741 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 05:23:46,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:46,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293525006] [2021-11-03 05:23:46,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293525006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:46,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:46,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:46,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509179562] [2021-11-03 05:23:46,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:46,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:46,744 INFO L87 Difference]: Start difference. First operand 2490 states and 3479 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:50,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:50,915 INFO L93 Difference]: Finished difference Result 4450 states and 6189 transitions. [2021-11-03 05:23:50,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:23:50,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:50,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:50,919 INFO L225 Difference]: With dead ends: 4450 [2021-11-03 05:23:50,920 INFO L226 Difference]: Without dead ends: 4114 [2021-11-03 05:23:50,921 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 05:23:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2021-11-03 05:23:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 2490. [2021-11-03 05:23:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4174480228291888) internal successors, (3477), 2489 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3477 transitions. [2021-11-03 05:23:51,233 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3477 transitions. Word has length 128 [2021-11-03 05:23:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:51,233 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3477 transitions. [2021-11-03 05:23:51,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3477 transitions. [2021-11-03 05:23:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:51,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:51,236 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] [2021-11-03 05:23:51,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 05:23:51,236 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:51,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1931938723, now seen corresponding path program 1 times [2021-11-03 05:23:51,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:51,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562168568] [2021-11-03 05:23:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:51,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:51,381 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 05:23:51,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:51,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562168568] [2021-11-03 05:23:51,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562168568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:51,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:51,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:51,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396690052] [2021-11-03 05:23:51,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:51,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:51,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:51,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:51,384 INFO L87 Difference]: Start difference. First operand 2490 states and 3477 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:55,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:55,679 INFO L93 Difference]: Finished difference Result 4302 states and 5973 transitions. [2021-11-03 05:23:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:23:55,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:23:55,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:55,684 INFO L225 Difference]: With dead ends: 4302 [2021-11-03 05:23:55,684 INFO L226 Difference]: Without dead ends: 4090 [2021-11-03 05:23:55,685 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 05:23:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2021-11-03 05:23:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 2490. [2021-11-03 05:23:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4166326946596004) internal successors, (3475), 2489 states have internal predecessors, (3475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3475 transitions. [2021-11-03 05:23:56,009 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3475 transitions. Word has length 128 [2021-11-03 05:23:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:56,010 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3475 transitions. [2021-11-03 05:23:56,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3475 transitions. [2021-11-03 05:23:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:23:56,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:56,012 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] [2021-11-03 05:23:56,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 05:23:56,013 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:23:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2009581056, now seen corresponding path program 1 times [2021-11-03 05:23:56,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:56,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061050688] [2021-11-03 05:23:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:56,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:56,166 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 05:23:56,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:56,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061050688] [2021-11-03 05:23:56,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061050688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:56,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:56,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:23:56,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467878701] [2021-11-03 05:23:56,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:56,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:56,169 INFO L87 Difference]: Start difference. First operand 2490 states and 3475 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:00,351 INFO L93 Difference]: Finished difference Result 4308 states and 5981 transitions. [2021-11-03 05:24:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:24:00,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:24:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:00,356 INFO L225 Difference]: With dead ends: 4308 [2021-11-03 05:24:00,356 INFO L226 Difference]: Without dead ends: 4090 [2021-11-03 05:24:00,358 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 05:24:00,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2021-11-03 05:24:00,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 2490. [2021-11-03 05:24:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4158173664900122) internal successors, (3473), 2489 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3473 transitions. [2021-11-03 05:24:00,679 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3473 transitions. Word has length 128 [2021-11-03 05:24:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:00,680 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3473 transitions. [2021-11-03 05:24:00,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3473 transitions. [2021-11-03 05:24:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:24:00,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:00,682 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] [2021-11-03 05:24:00,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 05:24:00,682 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:00,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:00,683 INFO L85 PathProgramCache]: Analyzing trace with hash 283054880, now seen corresponding path program 1 times [2021-11-03 05:24:00,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:00,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831405975] [2021-11-03 05:24:00,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:00,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:24:00,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:00,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831405975] [2021-11-03 05:24:00,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831405975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:00,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:00,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:00,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60166700] [2021-11-03 05:24:00,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:00,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:00,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:00,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:00,824 INFO L87 Difference]: Start difference. First operand 2490 states and 3473 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:04,697 INFO L93 Difference]: Finished difference Result 4440 states and 6166 transitions. [2021-11-03 05:24:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:04,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:24:04,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:04,702 INFO L225 Difference]: With dead ends: 4440 [2021-11-03 05:24:04,702 INFO L226 Difference]: Without dead ends: 4114 [2021-11-03 05:24:04,703 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 05:24:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2021-11-03 05:24:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 2490. [2021-11-03 05:24:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.415002038320424) internal successors, (3471), 2489 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3471 transitions. [2021-11-03 05:24:05,035 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3471 transitions. Word has length 128 [2021-11-03 05:24:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:05,036 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3471 transitions. [2021-11-03 05:24:05,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3471 transitions. [2021-11-03 05:24:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:24:05,040 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:05,040 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] [2021-11-03 05:24:05,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 05:24:05,040 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:05,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2101300270, now seen corresponding path program 1 times [2021-11-03 05:24:05,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:05,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821825545] [2021-11-03 05:24:05,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:05,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:05,187 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 05:24:05,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:05,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821825545] [2021-11-03 05:24:05,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821825545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:05,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:05,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:05,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486416404] [2021-11-03 05:24:05,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:05,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:05,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:05,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:05,189 INFO L87 Difference]: Start difference. First operand 2490 states and 3471 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:09,286 INFO L93 Difference]: Finished difference Result 4308 states and 5977 transitions. [2021-11-03 05:24:09,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:09,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:24:09,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:09,290 INFO L225 Difference]: With dead ends: 4308 [2021-11-03 05:24:09,290 INFO L226 Difference]: Without dead ends: 4090 [2021-11-03 05:24:09,292 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 05:24:09,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2021-11-03 05:24:09,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 2490. [2021-11-03 05:24:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4141867101508356) internal successors, (3469), 2489 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3469 transitions. [2021-11-03 05:24:09,633 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3469 transitions. Word has length 128 [2021-11-03 05:24:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:09,634 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3469 transitions. [2021-11-03 05:24:09,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:09,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3469 transitions. [2021-11-03 05:24:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:24:09,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:09,636 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] [2021-11-03 05:24:09,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 05:24:09,637 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:09,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:09,637 INFO L85 PathProgramCache]: Analyzing trace with hash -911959481, now seen corresponding path program 1 times [2021-11-03 05:24:09,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:09,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76663069] [2021-11-03 05:24:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:09,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:09,775 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 05:24:09,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:09,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76663069] [2021-11-03 05:24:09,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76663069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:09,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:09,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:09,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36304057] [2021-11-03 05:24:09,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:09,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:09,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:09,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:09,778 INFO L87 Difference]: Start difference. First operand 2490 states and 3469 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:13,246 INFO L93 Difference]: Finished difference Result 4086 states and 5612 transitions. [2021-11-03 05:24:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:13,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:24:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:13,250 INFO L225 Difference]: With dead ends: 4086 [2021-11-03 05:24:13,250 INFO L226 Difference]: Without dead ends: 3946 [2021-11-03 05:24:13,252 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 05:24:13,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-11-03 05:24:13,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 2490. [2021-11-03 05:24:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4133713819812475) internal successors, (3467), 2489 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3467 transitions. [2021-11-03 05:24:13,600 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3467 transitions. Word has length 128 [2021-11-03 05:24:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:13,601 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3467 transitions. [2021-11-03 05:24:13,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3467 transitions. [2021-11-03 05:24:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-03 05:24:13,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:13,605 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] [2021-11-03 05:24:13,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 05:24:13,605 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:13,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1564116255, now seen corresponding path program 1 times [2021-11-03 05:24:13,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:13,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798724903] [2021-11-03 05:24:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:13,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:13,750 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 05:24:13,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:13,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798724903] [2021-11-03 05:24:13,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798724903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:13,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:13,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:13,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968657578] [2021-11-03 05:24:13,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:13,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:13,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:13,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:13,754 INFO L87 Difference]: Start difference. First operand 2490 states and 3467 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:17,254 INFO L93 Difference]: Finished difference Result 4072 states and 5588 transitions. [2021-11-03 05:24:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:17,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-03 05:24:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:17,258 INFO L225 Difference]: With dead ends: 4072 [2021-11-03 05:24:17,258 INFO L226 Difference]: Without dead ends: 3946 [2021-11-03 05:24:17,259 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 05:24:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-11-03 05:24:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 2490. [2021-11-03 05:24:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4129637178964534) internal successors, (3466), 2489 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3466 transitions. [2021-11-03 05:24:17,615 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3466 transitions. Word has length 129 [2021-11-03 05:24:17,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:17,616 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3466 transitions. [2021-11-03 05:24:17,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3466 transitions. [2021-11-03 05:24:17,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-03 05:24:17,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:17,618 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] [2021-11-03 05:24:17,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 05:24:17,618 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1319219739, now seen corresponding path program 1 times [2021-11-03 05:24:17,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:17,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50766153] [2021-11-03 05:24:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:17,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:24:17,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:17,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50766153] [2021-11-03 05:24:17,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50766153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:17,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:17,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:17,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193544869] [2021-11-03 05:24:17,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:17,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:17,764 INFO L87 Difference]: Start difference. First operand 2490 states and 3466 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:21,328 INFO L93 Difference]: Finished difference Result 4072 states and 5587 transitions. [2021-11-03 05:24:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:21,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-03 05:24:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:21,332 INFO L225 Difference]: With dead ends: 4072 [2021-11-03 05:24:21,332 INFO L226 Difference]: Without dead ends: 3946 [2021-11-03 05:24:21,333 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 05:24:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-11-03 05:24:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 2490. [2021-11-03 05:24:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4125560538116593) internal successors, (3465), 2489 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3465 transitions. [2021-11-03 05:24:21,691 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3465 transitions. Word has length 129 [2021-11-03 05:24:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:21,692 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3465 transitions. [2021-11-03 05:24:21,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3465 transitions. [2021-11-03 05:24:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-03 05:24:21,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:21,694 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] [2021-11-03 05:24:21,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 05:24:21,694 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:21,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1196138585, now seen corresponding path program 1 times [2021-11-03 05:24:21,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:21,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905183748] [2021-11-03 05:24:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:21,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:21,833 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 05:24:21,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:21,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905183748] [2021-11-03 05:24:21,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905183748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:21,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:21,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:21,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667524879] [2021-11-03 05:24:21,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:21,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:21,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:21,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:21,835 INFO L87 Difference]: Start difference. First operand 2490 states and 3465 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:25,890 INFO L93 Difference]: Finished difference Result 4672 states and 6467 transitions. [2021-11-03 05:24:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:25,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-03 05:24:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:25,894 INFO L225 Difference]: With dead ends: 4672 [2021-11-03 05:24:25,894 INFO L226 Difference]: Without dead ends: 4072 [2021-11-03 05:24:25,896 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 05:24:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2021-11-03 05:24:26,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 2482. [2021-11-03 05:24:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.413087934560327) internal successors, (3455), 2481 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3455 transitions. [2021-11-03 05:24:26,256 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3455 transitions. Word has length 129 [2021-11-03 05:24:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:26,256 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3455 transitions. [2021-11-03 05:24:26,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3455 transitions. [2021-11-03 05:24:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:24:26,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:26,259 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] [2021-11-03 05:24:26,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 05:24:26,259 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:26,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1472441354, now seen corresponding path program 1 times [2021-11-03 05:24:26,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:26,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625490525] [2021-11-03 05:24:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:26,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:26,400 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 05:24:26,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:26,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625490525] [2021-11-03 05:24:26,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625490525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:26,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:26,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:26,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595068754] [2021-11-03 05:24:26,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:26,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:26,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:26,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:26,402 INFO L87 Difference]: Start difference. First operand 2482 states and 3455 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:30,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:30,160 INFO L93 Difference]: Finished difference Result 4183 states and 5773 transitions. [2021-11-03 05:24:30,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:30,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:24:30,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:30,164 INFO L225 Difference]: With dead ends: 4183 [2021-11-03 05:24:30,164 INFO L226 Difference]: Without dead ends: 4034 [2021-11-03 05:24:30,165 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 05:24:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2021-11-03 05:24:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 2482. [2021-11-03 05:24:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.412678936605317) internal successors, (3454), 2481 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:30,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3454 transitions. [2021-11-03 05:24:30,543 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3454 transitions. Word has length 130 [2021-11-03 05:24:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:30,543 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3454 transitions. [2021-11-03 05:24:30,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3454 transitions. [2021-11-03 05:24:30,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:24:30,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:30,545 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] [2021-11-03 05:24:30,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 05:24:30,546 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash 534171776, now seen corresponding path program 1 times [2021-11-03 05:24:30,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:30,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175839552] [2021-11-03 05:24:30,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:30,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:30,679 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 05:24:30,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:30,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175839552] [2021-11-03 05:24:30,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175839552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:30,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:30,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:30,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622209199] [2021-11-03 05:24:30,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:30,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:30,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:30,681 INFO L87 Difference]: Start difference. First operand 2482 states and 3454 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:34,419 INFO L93 Difference]: Finished difference Result 4074 states and 5587 transitions. [2021-11-03 05:24:34,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:24:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:34,424 INFO L225 Difference]: With dead ends: 4074 [2021-11-03 05:24:34,425 INFO L226 Difference]: Without dead ends: 3938 [2021-11-03 05:24:34,426 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 05:24:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2021-11-03 05:24:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 2482. [2021-11-03 05:24:34,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4122699386503068) internal successors, (3453), 2481 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3453 transitions. [2021-11-03 05:24:34,808 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3453 transitions. Word has length 130 [2021-11-03 05:24:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:34,808 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3453 transitions. [2021-11-03 05:24:34,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3453 transitions. [2021-11-03 05:24:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:24:34,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:34,810 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] [2021-11-03 05:24:34,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 05:24:34,810 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:34,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1439753190, now seen corresponding path program 1 times [2021-11-03 05:24:34,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:34,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672677454] [2021-11-03 05:24:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:34,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:34,970 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 05:24:34,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:34,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672677454] [2021-11-03 05:24:34,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672677454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:34,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:34,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:34,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804892870] [2021-11-03 05:24:34,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:34,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:34,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:34,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:34,972 INFO L87 Difference]: Start difference. First operand 2482 states and 3453 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:38,455 INFO L93 Difference]: Finished difference Result 4079 states and 5590 transitions. [2021-11-03 05:24:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:38,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:24:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:38,459 INFO L225 Difference]: With dead ends: 4079 [2021-11-03 05:24:38,459 INFO L226 Difference]: Without dead ends: 3938 [2021-11-03 05:24:38,460 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 05:24:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2021-11-03 05:24:38,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 2482. [2021-11-03 05:24:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2445 states have (on average 1.4118609406952964) internal successors, (3452), 2481 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3452 transitions. [2021-11-03 05:24:38,847 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3452 transitions. Word has length 130 [2021-11-03 05:24:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:38,847 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 3452 transitions. [2021-11-03 05:24:38,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3452 transitions. [2021-11-03 05:24:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:24:38,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:38,850 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] [2021-11-03 05:24:38,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 05:24:38,850 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:38,850 INFO L85 PathProgramCache]: Analyzing trace with hash 943017004, now seen corresponding path program 1 times [2021-11-03 05:24:38,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:38,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785042603] [2021-11-03 05:24:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:38,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:39,069 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 05:24:39,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:39,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785042603] [2021-11-03 05:24:39,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785042603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:39,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:39,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:24:39,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523961531] [2021-11-03 05:24:39,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:24:39,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:24:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:24:39,071 INFO L87 Difference]: Start difference. First operand 2482 states and 3452 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:45,413 INFO L93 Difference]: Finished difference Result 5095 states and 6988 transitions. [2021-11-03 05:24:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:24:45,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:24:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:45,420 INFO L225 Difference]: With dead ends: 5095 [2021-11-03 05:24:45,420 INFO L226 Difference]: Without dead ends: 4907 [2021-11-03 05:24:45,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:24:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2021-11-03 05:24:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 2486. [2021-11-03 05:24:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2449 states have (on average 1.4111882400979991) internal successors, (3456), 2485 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3456 transitions. [2021-11-03 05:24:45,876 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3456 transitions. Word has length 130 [2021-11-03 05:24:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:45,876 INFO L470 AbstractCegarLoop]: Abstraction has 2486 states and 3456 transitions. [2021-11-03 05:24:45,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3456 transitions. [2021-11-03 05:24:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:24:45,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:45,878 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] [2021-11-03 05:24:45,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 05:24:45,879 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:45,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:45,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1122844796, now seen corresponding path program 1 times [2021-11-03 05:24:45,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:45,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004596846] [2021-11-03 05:24:45,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:45,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:46,021 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 05:24:46,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:46,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004596846] [2021-11-03 05:24:46,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004596846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:46,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:46,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:46,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328697222] [2021-11-03 05:24:46,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:46,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:46,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:46,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:46,024 INFO L87 Difference]: Start difference. First operand 2486 states and 3456 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:49,753 INFO L93 Difference]: Finished difference Result 4074 states and 5584 transitions. [2021-11-03 05:24:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:24:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:49,756 INFO L225 Difference]: With dead ends: 4074 [2021-11-03 05:24:49,756 INFO L226 Difference]: Without dead ends: 3942 [2021-11-03 05:24:49,757 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 05:24:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2021-11-03 05:24:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 2486. [2021-11-03 05:24:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2449 states have (on average 1.4107799101674152) internal successors, (3455), 2485 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3455 transitions. [2021-11-03 05:24:50,185 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3455 transitions. Word has length 130 [2021-11-03 05:24:50,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:50,185 INFO L470 AbstractCegarLoop]: Abstraction has 2486 states and 3455 transitions. [2021-11-03 05:24:50,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:50,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3455 transitions. [2021-11-03 05:24:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:24:50,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:50,188 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] [2021-11-03 05:24:50,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 05:24:50,188 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:50,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2023063742, now seen corresponding path program 1 times [2021-11-03 05:24:50,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:50,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250430515] [2021-11-03 05:24:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:50,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:50,320 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 05:24:50,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:50,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250430515] [2021-11-03 05:24:50,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250430515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:50,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:50,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:50,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638408629] [2021-11-03 05:24:50,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:50,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:50,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:50,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:50,322 INFO L87 Difference]: Start difference. First operand 2486 states and 3455 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:54,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:54,619 INFO L93 Difference]: Finished difference Result 4251 states and 5877 transitions. [2021-11-03 05:24:54,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:24:54,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:24:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:54,622 INFO L225 Difference]: With dead ends: 4251 [2021-11-03 05:24:54,623 INFO L226 Difference]: Without dead ends: 4082 [2021-11-03 05:24:54,623 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 05:24:54,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-11-03 05:24:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2486. [2021-11-03 05:24:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2449 states have (on average 1.4103715802368313) internal successors, (3454), 2485 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3454 transitions. [2021-11-03 05:24:55,049 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3454 transitions. Word has length 130 [2021-11-03 05:24:55,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:55,050 INFO L470 AbstractCegarLoop]: Abstraction has 2486 states and 3454 transitions. [2021-11-03 05:24:55,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3454 transitions. [2021-11-03 05:24:55,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:24:55,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:55,053 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] [2021-11-03 05:24:55,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 05:24:55,053 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:55,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1591395485, now seen corresponding path program 1 times [2021-11-03 05:24:55,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:55,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94926530] [2021-11-03 05:24:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:55,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:55,189 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 05:24:55,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:55,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94926530] [2021-11-03 05:24:55,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94926530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:55,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:55,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:55,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137055242] [2021-11-03 05:24:55,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:55,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:55,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:55,192 INFO L87 Difference]: Start difference. First operand 2486 states and 3454 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:59,189 INFO L93 Difference]: Finished difference Result 4177 states and 5756 transitions. [2021-11-03 05:24:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:24:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:24:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:59,193 INFO L225 Difference]: With dead ends: 4177 [2021-11-03 05:24:59,193 INFO L226 Difference]: Without dead ends: 4038 [2021-11-03 05:24:59,195 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 05:24:59,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-11-03 05:24:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 2486. [2021-11-03 05:24:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2449 states have (on average 1.4099632503062474) internal successors, (3453), 2485 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3453 transitions. [2021-11-03 05:24:59,636 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3453 transitions. Word has length 130 [2021-11-03 05:24:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:59,637 INFO L470 AbstractCegarLoop]: Abstraction has 2486 states and 3453 transitions. [2021-11-03 05:24:59,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3453 transitions. [2021-11-03 05:24:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:24:59,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:59,639 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] [2021-11-03 05:24:59,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 05:24:59,639 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:24:59,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:59,640 INFO L85 PathProgramCache]: Analyzing trace with hash -135015001, now seen corresponding path program 1 times [2021-11-03 05:24:59,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:59,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050796146] [2021-11-03 05:24:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:59,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:59,768 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 05:24:59,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:59,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050796146] [2021-11-03 05:24:59,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050796146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:59,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:59,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:24:59,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638341079] [2021-11-03 05:24:59,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:24:59,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:24:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:24:59,771 INFO L87 Difference]: Start difference. First operand 2486 states and 3453 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:03,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:03,374 INFO L93 Difference]: Finished difference Result 4074 states and 5581 transitions. [2021-11-03 05:25:03,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:25:03,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:03,378 INFO L225 Difference]: With dead ends: 4074 [2021-11-03 05:25:03,378 INFO L226 Difference]: Without dead ends: 3942 [2021-11-03 05:25:03,379 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 05:25:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2021-11-03 05:25:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 2486. [2021-11-03 05:25:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2449 states have (on average 1.4095549203756634) internal successors, (3452), 2485 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3452 transitions. [2021-11-03 05:25:03,826 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3452 transitions. Word has length 130 [2021-11-03 05:25:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:03,826 INFO L470 AbstractCegarLoop]: Abstraction has 2486 states and 3452 transitions. [2021-11-03 05:25:03,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3452 transitions. [2021-11-03 05:25:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:03,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:03,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:25:03,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 05:25:03,829 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:03,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1627434501, now seen corresponding path program 1 times [2021-11-03 05:25:03,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:03,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522886183] [2021-11-03 05:25:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:03,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:03,964 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 05:25:03,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:03,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522886183] [2021-11-03 05:25:03,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522886183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:03,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:03,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:25:03,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443973960] [2021-11-03 05:25:03,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:25:03,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:25:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:25:03,966 INFO L87 Difference]: Start difference. First operand 2486 states and 3452 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:07,766 INFO L93 Difference]: Finished difference Result 4171 states and 5744 transitions. [2021-11-03 05:25:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:25:07,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:07,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:07,770 INFO L225 Difference]: With dead ends: 4171 [2021-11-03 05:25:07,770 INFO L226 Difference]: Without dead ends: 4038 [2021-11-03 05:25:07,771 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 05:25:07,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-11-03 05:25:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 2486. [2021-11-03 05:25:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2449 states have (on average 1.4091465904450797) internal successors, (3451), 2485 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3451 transitions. [2021-11-03 05:25:08,254 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3451 transitions. Word has length 130 [2021-11-03 05:25:08,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:08,255 INFO L470 AbstractCegarLoop]: Abstraction has 2486 states and 3451 transitions. [2021-11-03 05:25:08,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3451 transitions. [2021-11-03 05:25:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:08,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:08,257 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] [2021-11-03 05:25:08,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 05:25:08,257 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:08,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:08,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1936200684, now seen corresponding path program 1 times [2021-11-03 05:25:08,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:08,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114338308] [2021-11-03 05:25:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:08,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:08,403 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 05:25:08,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:08,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114338308] [2021-11-03 05:25:08,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114338308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:08,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:08,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:25:08,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823879822] [2021-11-03 05:25:08,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:25:08,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:25:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:25:08,407 INFO L87 Difference]: Start difference. First operand 2486 states and 3451 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:12,007 INFO L93 Difference]: Finished difference Result 4074 states and 5578 transitions. [2021-11-03 05:25:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:25:12,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:12,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:12,012 INFO L225 Difference]: With dead ends: 4074 [2021-11-03 05:25:12,012 INFO L226 Difference]: Without dead ends: 3942 [2021-11-03 05:25:12,013 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 05:25:12,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2021-11-03 05:25:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 2486. [2021-11-03 05:25:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2449 states have (on average 1.4087382605144958) internal successors, (3450), 2485 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3450 transitions. [2021-11-03 05:25:12,496 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3450 transitions. Word has length 130 [2021-11-03 05:25:12,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:12,497 INFO L470 AbstractCegarLoop]: Abstraction has 2486 states and 3450 transitions. [2021-11-03 05:25:12,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3450 transitions. [2021-11-03 05:25:12,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:12,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:12,499 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] [2021-11-03 05:25:12,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-03 05:25:12,499 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:12,500 INFO L85 PathProgramCache]: Analyzing trace with hash -52184210, now seen corresponding path program 1 times [2021-11-03 05:25:12,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:12,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511338520] [2021-11-03 05:25:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:12,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:12,717 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 05:25:12,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:12,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511338520] [2021-11-03 05:25:12,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511338520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:12,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:12,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:25:12,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684458084] [2021-11-03 05:25:12,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:25:12,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:25:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:25:12,719 INFO L87 Difference]: Start difference. First operand 2486 states and 3450 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:19,090 INFO L93 Difference]: Finished difference Result 5057 states and 6938 transitions. [2021-11-03 05:25:19,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:25:19,091 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:19,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:19,094 INFO L225 Difference]: With dead ends: 5057 [2021-11-03 05:25:19,094 INFO L226 Difference]: Without dead ends: 4888 [2021-11-03 05:25:19,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:25:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2021-11-03 05:25:19,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 2490. [2021-11-03 05:25:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4080717488789238) internal successors, (3454), 2489 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3454 transitions. [2021-11-03 05:25:19,594 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3454 transitions. Word has length 130 [2021-11-03 05:25:19,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:19,594 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3454 transitions. [2021-11-03 05:25:19,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3454 transitions. [2021-11-03 05:25:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:19,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:19,596 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] [2021-11-03 05:25:19,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-03 05:25:19,596 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:19,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:19,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1890215923, now seen corresponding path program 1 times [2021-11-03 05:25:19,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:19,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955446027] [2021-11-03 05:25:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:19,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:19,720 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 05:25:19,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:19,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955446027] [2021-11-03 05:25:19,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955446027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:19,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:19,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:25:19,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912790747] [2021-11-03 05:25:19,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:25:19,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:19,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:25:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:25:19,722 INFO L87 Difference]: Start difference. First operand 2490 states and 3454 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:23,683 INFO L93 Difference]: Finished difference Result 4181 states and 5754 transitions. [2021-11-03 05:25:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:25:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:23,688 INFO L225 Difference]: With dead ends: 4181 [2021-11-03 05:25:23,688 INFO L226 Difference]: Without dead ends: 4042 [2021-11-03 05:25:23,689 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 05:25:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4042 states. [2021-11-03 05:25:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4042 to 2490. [2021-11-03 05:25:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4076640847941297) internal successors, (3453), 2489 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3453 transitions. [2021-11-03 05:25:24,188 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3453 transitions. Word has length 130 [2021-11-03 05:25:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:24,188 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3453 transitions. [2021-11-03 05:25:24,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:24,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3453 transitions. [2021-11-03 05:25:24,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:24,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:24,192 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] [2021-11-03 05:25:24,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-03 05:25:24,193 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:24,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash -199067401, now seen corresponding path program 1 times [2021-11-03 05:25:24,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:24,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75218073] [2021-11-03 05:25:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:24,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:24,337 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 05:25:24,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:24,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75218073] [2021-11-03 05:25:24,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75218073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:24,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:24,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:25:24,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407540745] [2021-11-03 05:25:24,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:25:24,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:24,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:25:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:25:24,340 INFO L87 Difference]: Start difference. First operand 2490 states and 3453 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:28,084 INFO L93 Difference]: Finished difference Result 4078 states and 5580 transitions. [2021-11-03 05:25:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:25:28,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:28,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:28,088 INFO L225 Difference]: With dead ends: 4078 [2021-11-03 05:25:28,089 INFO L226 Difference]: Without dead ends: 3946 [2021-11-03 05:25:28,090 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 05:25:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-11-03 05:25:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 2490. [2021-11-03 05:25:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4072564207093354) internal successors, (3452), 2489 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3452 transitions. [2021-11-03 05:25:28,567 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3452 transitions. Word has length 130 [2021-11-03 05:25:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:28,568 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3452 transitions. [2021-11-03 05:25:28,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:28,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3452 transitions. [2021-11-03 05:25:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:28,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:28,570 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] [2021-11-03 05:25:28,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-03 05:25:28,570 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:28,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:28,570 INFO L85 PathProgramCache]: Analyzing trace with hash 204859710, now seen corresponding path program 1 times [2021-11-03 05:25:28,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:28,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882467383] [2021-11-03 05:25:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:28,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:28,689 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 05:25:28,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:28,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882467383] [2021-11-03 05:25:28,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882467383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:28,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:28,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:25:28,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777643421] [2021-11-03 05:25:28,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:25:28,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:25:28,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:25:28,692 INFO L87 Difference]: Start difference. First operand 2490 states and 3452 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:32,667 INFO L93 Difference]: Finished difference Result 4180 states and 5750 transitions. [2021-11-03 05:25:32,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:25:32,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:32,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:32,672 INFO L225 Difference]: With dead ends: 4180 [2021-11-03 05:25:32,672 INFO L226 Difference]: Without dead ends: 4042 [2021-11-03 05:25:32,673 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 05:25:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4042 states. [2021-11-03 05:25:33,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4042 to 2490. [2021-11-03 05:25:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2453 states have (on average 1.4068487566245413) internal successors, (3451), 2489 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3451 transitions. [2021-11-03 05:25:33,150 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3451 transitions. Word has length 130 [2021-11-03 05:25:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:33,150 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3451 transitions. [2021-11-03 05:25:33,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3451 transitions. [2021-11-03 05:25:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:33,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:33,153 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] [2021-11-03 05:25:33,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-03 05:25:33,153 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1145655454, now seen corresponding path program 1 times [2021-11-03 05:25:33,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:33,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680065666] [2021-11-03 05:25:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:33,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:33,359 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 05:25:33,359 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:33,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680065666] [2021-11-03 05:25:33,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680065666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:33,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:33,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:25:33,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328419912] [2021-11-03 05:25:33,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:25:33,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:33,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:25:33,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:25:33,361 INFO L87 Difference]: Start difference. First operand 2490 states and 3451 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:39,887 INFO L93 Difference]: Finished difference Result 5067 states and 6949 transitions. [2021-11-03 05:25:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:25:39,887 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:39,892 INFO L225 Difference]: With dead ends: 5067 [2021-11-03 05:25:39,892 INFO L226 Difference]: Without dead ends: 4893 [2021-11-03 05:25:39,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:25:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2021-11-03 05:25:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 2494. [2021-11-03 05:25:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2457 states have (on average 1.4061864061864062) internal successors, (3455), 2493 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3455 transitions. [2021-11-03 05:25:40,384 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3455 transitions. Word has length 130 [2021-11-03 05:25:40,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:40,385 INFO L470 AbstractCegarLoop]: Abstraction has 2494 states and 3455 transitions. [2021-11-03 05:25:40,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3455 transitions. [2021-11-03 05:25:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:40,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:40,387 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] [2021-11-03 05:25:40,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-03 05:25:40,387 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1826163523, now seen corresponding path program 1 times [2021-11-03 05:25:40,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:40,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469828419] [2021-11-03 05:25:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:40,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:40,522 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 05:25:40,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:40,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469828419] [2021-11-03 05:25:40,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469828419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:40,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:40,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:25:40,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830145886] [2021-11-03 05:25:40,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:25:40,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:25:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:25:40,524 INFO L87 Difference]: Start difference. First operand 2494 states and 3455 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:44,528 INFO L93 Difference]: Finished difference Result 4190 states and 5762 transitions. [2021-11-03 05:25:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:25:44,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:44,533 INFO L225 Difference]: With dead ends: 4190 [2021-11-03 05:25:44,533 INFO L226 Difference]: Without dead ends: 4046 [2021-11-03 05:25:44,534 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 05:25:44,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2021-11-03 05:25:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 2494. [2021-11-03 05:25:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2457 states have (on average 1.4057794057794057) internal successors, (3454), 2493 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3454 transitions. [2021-11-03 05:25:45,027 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3454 transitions. Word has length 130 [2021-11-03 05:25:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:45,028 INFO L470 AbstractCegarLoop]: Abstraction has 2494 states and 3454 transitions. [2021-11-03 05:25:45,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3454 transitions. [2021-11-03 05:25:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:45,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:45,030 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] [2021-11-03 05:25:45,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-03 05:25:45,030 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash -913885687, now seen corresponding path program 1 times [2021-11-03 05:25:45,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:45,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769766384] [2021-11-03 05:25:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:45,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:45,231 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 05:25:45,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:45,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769766384] [2021-11-03 05:25:45,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769766384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:45,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:45,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:25:45,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356324205] [2021-11-03 05:25:45,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:25:45,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:25:45,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:25:45,233 INFO L87 Difference]: Start difference. First operand 2494 states and 3454 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:51,718 INFO L93 Difference]: Finished difference Result 5052 states and 6929 transitions. [2021-11-03 05:25:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:25:51,719 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:51,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:51,723 INFO L225 Difference]: With dead ends: 5052 [2021-11-03 05:25:51,723 INFO L226 Difference]: Without dead ends: 4889 [2021-11-03 05:25:51,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:25:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2021-11-03 05:25:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 2498. [2021-11-03 05:25:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2461 states have (on average 1.4051198699715564) internal successors, (3458), 2497 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3458 transitions. [2021-11-03 05:25:52,242 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3458 transitions. Word has length 130 [2021-11-03 05:25:52,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:52,242 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 3458 transitions. [2021-11-03 05:25:52,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3458 transitions. [2021-11-03 05:25:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:52,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:52,244 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] [2021-11-03 05:25:52,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-03 05:25:52,245 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:52,245 INFO L85 PathProgramCache]: Analyzing trace with hash -177419759, now seen corresponding path program 1 times [2021-11-03 05:25:52,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:52,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120451310] [2021-11-03 05:25:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:52,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:52,366 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 05:25:52,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:52,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120451310] [2021-11-03 05:25:52,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120451310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:52,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:52,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:25:52,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678627784] [2021-11-03 05:25:52,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:25:52,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:25:52,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:25:52,367 INFO L87 Difference]: Start difference. First operand 2498 states and 3458 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:56,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:56,242 INFO L93 Difference]: Finished difference Result 4188 states and 5756 transitions. [2021-11-03 05:25:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:25:56,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:25:56,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:56,246 INFO L225 Difference]: With dead ends: 4188 [2021-11-03 05:25:56,246 INFO L226 Difference]: Without dead ends: 4050 [2021-11-03 05:25:56,247 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 05:25:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2021-11-03 05:25:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 2498. [2021-11-03 05:25:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2461 states have (on average 1.4047135310849248) internal successors, (3457), 2497 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3457 transitions. [2021-11-03 05:25:56,803 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3457 transitions. Word has length 130 [2021-11-03 05:25:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:56,804 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 3457 transitions. [2021-11-03 05:25:56,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3457 transitions. [2021-11-03 05:25:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:25:56,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:56,806 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] [2021-11-03 05:25:56,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-03 05:25:56,806 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:25:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1835903092, now seen corresponding path program 1 times [2021-11-03 05:25:56,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:56,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360824045] [2021-11-03 05:25:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:56,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:56,937 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 05:25:56,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:56,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360824045] [2021-11-03 05:25:56,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360824045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:56,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:56,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:25:56,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288065837] [2021-11-03 05:25:56,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:25:56,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:56,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:25:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:25:56,939 INFO L87 Difference]: Start difference. First operand 2498 states and 3457 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:01,435 INFO L93 Difference]: Finished difference Result 4233 states and 5836 transitions. [2021-11-03 05:26:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:26:01,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:01,438 INFO L225 Difference]: With dead ends: 4233 [2021-11-03 05:26:01,438 INFO L226 Difference]: Without dead ends: 4082 [2021-11-03 05:26:01,439 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 05:26:01,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-11-03 05:26:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2498. [2021-11-03 05:26:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2461 states have (on average 1.4043071921982935) internal successors, (3456), 2497 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3456 transitions. [2021-11-03 05:26:01,955 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3456 transitions. Word has length 130 [2021-11-03 05:26:01,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:01,955 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 3456 transitions. [2021-11-03 05:26:01,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:01,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3456 transitions. [2021-11-03 05:26:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:01,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:01,957 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] [2021-11-03 05:26:01,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-03 05:26:01,958 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:01,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:01,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1449338629, now seen corresponding path program 1 times [2021-11-03 05:26:01,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:01,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457002443] [2021-11-03 05:26:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:01,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:02,343 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 05:26:02,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:02,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457002443] [2021-11-03 05:26:02,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457002443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:02,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:02,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:26:02,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782353654] [2021-11-03 05:26:02,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:26:02,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:02,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:26:02,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:26:02,346 INFO L87 Difference]: Start difference. First operand 2498 states and 3456 transitions. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 11 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:05,586 INFO L93 Difference]: Finished difference Result 4474 states and 6156 transitions. [2021-11-03 05:26:05,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:26:05,587 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 11 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:05,591 INFO L225 Difference]: With dead ends: 4474 [2021-11-03 05:26:05,591 INFO L226 Difference]: Without dead ends: 4336 [2021-11-03 05:26:05,592 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 05:26:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-11-03 05:26:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 2484. [2021-11-03 05:26:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.4041683694319576) internal successors, (3436), 2483 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:06,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3436 transitions. [2021-11-03 05:26:06,142 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3436 transitions. Word has length 130 [2021-11-03 05:26:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:06,143 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3436 transitions. [2021-11-03 05:26:06,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 11 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3436 transitions. [2021-11-03 05:26:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:06,145 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:06,145 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] [2021-11-03 05:26:06,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-03 05:26:06,145 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:06,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1372745915, now seen corresponding path program 1 times [2021-11-03 05:26:06,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:06,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780248368] [2021-11-03 05:26:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:06,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:06,319 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 05:26:06,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:06,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780248368] [2021-11-03 05:26:06,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780248368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:06,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:06,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:06,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204262872] [2021-11-03 05:26:06,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:06,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:06,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:06,321 INFO L87 Difference]: Start difference. First operand 2484 states and 3436 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:11,084 INFO L93 Difference]: Finished difference Result 4494 states and 6186 transitions. [2021-11-03 05:26:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:26:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:11,088 INFO L225 Difference]: With dead ends: 4494 [2021-11-03 05:26:11,088 INFO L226 Difference]: Without dead ends: 4116 [2021-11-03 05:26:11,089 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 05:26:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-11-03 05:26:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 2484. [2021-11-03 05:26:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.403351042092358) internal successors, (3434), 2483 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3434 transitions. [2021-11-03 05:26:11,646 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3434 transitions. Word has length 130 [2021-11-03 05:26:11,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:11,646 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3434 transitions. [2021-11-03 05:26:11,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3434 transitions. [2021-11-03 05:26:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:11,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:11,648 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] [2021-11-03 05:26:11,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-03 05:26:11,648 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:11,649 INFO L85 PathProgramCache]: Analyzing trace with hash -414476470, now seen corresponding path program 1 times [2021-11-03 05:26:11,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:11,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146592523] [2021-11-03 05:26:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:11,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:11,779 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 05:26:11,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:11,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146592523] [2021-11-03 05:26:11,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146592523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:11,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:11,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:11,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941888307] [2021-11-03 05:26:11,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:11,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:11,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:11,782 INFO L87 Difference]: Start difference. First operand 2484 states and 3434 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:15,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:15,844 INFO L93 Difference]: Finished difference Result 4077 states and 5567 transitions. [2021-11-03 05:26:15,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:26:15,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:15,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:15,849 INFO L225 Difference]: With dead ends: 4077 [2021-11-03 05:26:15,849 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:26:15,850 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 05:26:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:26:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2484. [2021-11-03 05:26:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.4025337147527586) internal successors, (3432), 2483 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3432 transitions. [2021-11-03 05:26:16,434 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3432 transitions. Word has length 130 [2021-11-03 05:26:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:16,434 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3432 transitions. [2021-11-03 05:26:16,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3432 transitions. [2021-11-03 05:26:16,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:16,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:16,436 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] [2021-11-03 05:26:16,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-03 05:26:16,437 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:16,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1592136660, now seen corresponding path program 1 times [2021-11-03 05:26:16,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:16,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761742497] [2021-11-03 05:26:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:16,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:16,566 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 05:26:16,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:16,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761742497] [2021-11-03 05:26:16,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761742497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:16,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:16,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:16,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113400489] [2021-11-03 05:26:16,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:16,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:16,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:16,569 INFO L87 Difference]: Start difference. First operand 2484 states and 3432 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:20,627 INFO L93 Difference]: Finished difference Result 4077 states and 5563 transitions. [2021-11-03 05:26:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:26:20,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:20,636 INFO L225 Difference]: With dead ends: 4077 [2021-11-03 05:26:20,636 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:26:20,637 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 05:26:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:26:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2484. [2021-11-03 05:26:21,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.401716387413159) internal successors, (3430), 2483 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3430 transitions. [2021-11-03 05:26:21,235 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3430 transitions. Word has length 130 [2021-11-03 05:26:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:21,235 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3430 transitions. [2021-11-03 05:26:21,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3430 transitions. [2021-11-03 05:26:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:21,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:21,239 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] [2021-11-03 05:26:21,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-03 05:26:21,239 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2000981888, now seen corresponding path program 1 times [2021-11-03 05:26:21,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:21,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325735481] [2021-11-03 05:26:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:21,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:21,371 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 05:26:21,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:21,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325735481] [2021-11-03 05:26:21,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325735481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:21,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:21,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:21,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010496991] [2021-11-03 05:26:21,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:21,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:21,373 INFO L87 Difference]: Start difference. First operand 2484 states and 3430 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:26,083 INFO L93 Difference]: Finished difference Result 4306 states and 5928 transitions. [2021-11-03 05:26:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:26:26,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:26,086 INFO L225 Difference]: With dead ends: 4306 [2021-11-03 05:26:26,086 INFO L226 Difference]: Without dead ends: 4068 [2021-11-03 05:26:26,087 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 05:26:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2021-11-03 05:26:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 2484. [2021-11-03 05:26:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.4008990600735594) internal successors, (3428), 2483 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3428 transitions. [2021-11-03 05:26:26,661 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3428 transitions. Word has length 130 [2021-11-03 05:26:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:26,661 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3428 transitions. [2021-11-03 05:26:26,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3428 transitions. [2021-11-03 05:26:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:26,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:26,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:26:26,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-03 05:26:26,663 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:26,664 INFO L85 PathProgramCache]: Analyzing trace with hash 945093069, now seen corresponding path program 1 times [2021-11-03 05:26:26,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:26,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299432518] [2021-11-03 05:26:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:26,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:26,788 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 05:26:26,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:26,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299432518] [2021-11-03 05:26:26,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299432518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:26,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:26,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:26,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975401593] [2021-11-03 05:26:26,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:26,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:26,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:26,791 INFO L87 Difference]: Start difference. First operand 2484 states and 3428 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:30,794 INFO L93 Difference]: Finished difference Result 4077 states and 5559 transitions. [2021-11-03 05:26:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:26:30,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:30,798 INFO L225 Difference]: With dead ends: 4077 [2021-11-03 05:26:30,798 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:26:30,799 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 05:26:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:26:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2484. [2021-11-03 05:26:31,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.4000817327339599) internal successors, (3426), 2483 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3426 transitions. [2021-11-03 05:26:31,408 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3426 transitions. Word has length 130 [2021-11-03 05:26:31,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:31,408 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3426 transitions. [2021-11-03 05:26:31,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:31,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3426 transitions. [2021-11-03 05:26:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:31,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:31,411 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] [2021-11-03 05:26:31,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-03 05:26:31,412 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:31,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash -934415869, now seen corresponding path program 1 times [2021-11-03 05:26:31,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:31,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6340979] [2021-11-03 05:26:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:31,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:31,523 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 05:26:31,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:31,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6340979] [2021-11-03 05:26:31,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6340979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:31,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:31,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:31,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322803317] [2021-11-03 05:26:31,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:31,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:31,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:31,526 INFO L87 Difference]: Start difference. First operand 2484 states and 3426 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:35,586 INFO L93 Difference]: Finished difference Result 4216 states and 5777 transitions. [2021-11-03 05:26:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:26:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:35,590 INFO L225 Difference]: With dead ends: 4216 [2021-11-03 05:26:35,590 INFO L226 Difference]: Without dead ends: 4036 [2021-11-03 05:26:35,591 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 05:26:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4036 states. [2021-11-03 05:26:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4036 to 2484. [2021-11-03 05:26:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.3992644053943604) internal successors, (3424), 2483 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3424 transitions. [2021-11-03 05:26:36,174 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3424 transitions. Word has length 130 [2021-11-03 05:26:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:36,174 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3424 transitions. [2021-11-03 05:26:36,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3424 transitions. [2021-11-03 05:26:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:36,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:36,176 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] [2021-11-03 05:26:36,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-03 05:26:36,177 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:36,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1343261097, now seen corresponding path program 1 times [2021-11-03 05:26:36,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:36,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778314950] [2021-11-03 05:26:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:36,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:36,299 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 05:26:36,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:36,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778314950] [2021-11-03 05:26:36,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778314950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:36,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:36,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:36,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513164524] [2021-11-03 05:26:36,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:36,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:36,301 INFO L87 Difference]: Start difference. First operand 2484 states and 3424 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:40,294 INFO L93 Difference]: Finished difference Result 4077 states and 5553 transitions. [2021-11-03 05:26:40,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:26:40,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:40,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:40,298 INFO L225 Difference]: With dead ends: 4077 [2021-11-03 05:26:40,298 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:26:40,299 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 05:26:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:26:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2484. [2021-11-03 05:26:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.3984470780547609) internal successors, (3422), 2483 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3422 transitions. [2021-11-03 05:26:40,966 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3422 transitions. Word has length 130 [2021-11-03 05:26:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:40,966 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3422 transitions. [2021-11-03 05:26:40,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3422 transitions. [2021-11-03 05:26:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:40,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:40,969 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] [2021-11-03 05:26:40,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-03 05:26:40,969 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:40,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash 828689955, now seen corresponding path program 1 times [2021-11-03 05:26:40,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:40,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611068143] [2021-11-03 05:26:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:40,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:41,095 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 05:26:41,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:41,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611068143] [2021-11-03 05:26:41,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611068143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:41,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:41,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:41,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497907363] [2021-11-03 05:26:41,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:41,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:41,097 INFO L87 Difference]: Start difference. First operand 2484 states and 3422 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:45,327 INFO L93 Difference]: Finished difference Result 4190 states and 5736 transitions. [2021-11-03 05:26:45,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:26:45,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:45,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:45,331 INFO L225 Difference]: With dead ends: 4190 [2021-11-03 05:26:45,331 INFO L226 Difference]: Without dead ends: 4036 [2021-11-03 05:26:45,331 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 05:26:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4036 states. [2021-11-03 05:26:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4036 to 2484. [2021-11-03 05:26:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.3976297507151614) internal successors, (3420), 2483 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3420 transitions. [2021-11-03 05:26:45,934 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3420 transitions. Word has length 130 [2021-11-03 05:26:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:45,935 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3420 transitions. [2021-11-03 05:26:45,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3420 transitions. [2021-11-03 05:26:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:45,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:45,937 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] [2021-11-03 05:26:45,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-03 05:26:45,937 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash -732401857, now seen corresponding path program 1 times [2021-11-03 05:26:45,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:45,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125151916] [2021-11-03 05:26:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:45,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:46,042 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 05:26:46,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:46,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125151916] [2021-11-03 05:26:46,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125151916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:46,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:46,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:46,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570439146] [2021-11-03 05:26:46,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:46,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:46,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:46,044 INFO L87 Difference]: Start difference. First operand 2484 states and 3420 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:50,211 INFO L93 Difference]: Finished difference Result 4208 states and 5759 transitions. [2021-11-03 05:26:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:26:50,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:50,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:50,215 INFO L225 Difference]: With dead ends: 4208 [2021-11-03 05:26:50,215 INFO L226 Difference]: Without dead ends: 4036 [2021-11-03 05:26:50,216 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 05:26:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4036 states. [2021-11-03 05:26:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4036 to 2484. [2021-11-03 05:26:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.3968124233755619) internal successors, (3418), 2483 states have internal predecessors, (3418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3418 transitions. [2021-11-03 05:26:50,848 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3418 transitions. Word has length 130 [2021-11-03 05:26:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:50,849 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3418 transitions. [2021-11-03 05:26:50,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3418 transitions. [2021-11-03 05:26:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:50,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:50,851 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] [2021-11-03 05:26:50,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-03 05:26:50,851 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash -573739680, now seen corresponding path program 1 times [2021-11-03 05:26:50,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:50,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275626232] [2021-11-03 05:26:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:50,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:51,050 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 05:26:51,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:51,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275626232] [2021-11-03 05:26:51,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275626232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:51,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:51,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:26:51,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749245691] [2021-11-03 05:26:51,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:26:51,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:26:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:26:51,052 INFO L87 Difference]: Start difference. First operand 2484 states and 3418 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:58,676 INFO L93 Difference]: Finished difference Result 5166 states and 7050 transitions. [2021-11-03 05:26:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:26:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:26:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:58,680 INFO L225 Difference]: With dead ends: 5166 [2021-11-03 05:26:58,680 INFO L226 Difference]: Without dead ends: 4944 [2021-11-03 05:26:58,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:26:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2021-11-03 05:26:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 2492. [2021-11-03 05:26:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.395519348268839) internal successors, (3426), 2491 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3426 transitions. [2021-11-03 05:26:59,336 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3426 transitions. Word has length 130 [2021-11-03 05:26:59,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:59,337 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3426 transitions. [2021-11-03 05:26:59,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3426 transitions. [2021-11-03 05:26:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:26:59,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:59,339 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] [2021-11-03 05:26:59,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-03 05:26:59,339 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:26:59,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:59,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1305769258, now seen corresponding path program 1 times [2021-11-03 05:26:59,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:59,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090047488] [2021-11-03 05:26:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:59,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:59,455 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 05:26:59,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:59,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090047488] [2021-11-03 05:26:59,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090047488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:59,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:59,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:26:59,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533721597] [2021-11-03 05:26:59,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:26:59,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:26:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:59,458 INFO L87 Difference]: Start difference. First operand 2492 states and 3426 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:03,791 INFO L93 Difference]: Finished difference Result 4212 states and 5757 transitions. [2021-11-03 05:27:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:27:03,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:27:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:03,795 INFO L225 Difference]: With dead ends: 4212 [2021-11-03 05:27:03,795 INFO L226 Difference]: Without dead ends: 4044 [2021-11-03 05:27:03,796 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 05:27:03,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-11-03 05:27:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2492. [2021-11-03 05:27:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3947046843177189) internal successors, (3424), 2491 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3424 transitions. [2021-11-03 05:27:04,455 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3424 transitions. Word has length 130 [2021-11-03 05:27:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:04,455 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3424 transitions. [2021-11-03 05:27:04,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3424 transitions. [2021-11-03 05:27:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:27:04,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:04,457 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] [2021-11-03 05:27:04,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-03 05:27:04,457 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:04,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash -371725668, now seen corresponding path program 1 times [2021-11-03 05:27:04,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:04,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362147372] [2021-11-03 05:27:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:04,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:04,560 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 05:27:04,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:04,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362147372] [2021-11-03 05:27:04,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362147372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:04,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:04,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:27:04,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714522975] [2021-11-03 05:27:04,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:04,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:04,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:04,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:04,562 INFO L87 Difference]: Start difference. First operand 2492 states and 3424 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:08,828 INFO L93 Difference]: Finished difference Result 4212 states and 5755 transitions. [2021-11-03 05:27:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:27:08,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:27:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:08,832 INFO L225 Difference]: With dead ends: 4212 [2021-11-03 05:27:08,832 INFO L226 Difference]: Without dead ends: 4044 [2021-11-03 05:27:08,832 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 05:27:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-11-03 05:27:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2492. [2021-11-03 05:27:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3938900203665987) internal successors, (3422), 2491 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3422 transitions. [2021-11-03 05:27:09,466 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3422 transitions. Word has length 130 [2021-11-03 05:27:09,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:09,466 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3422 transitions. [2021-11-03 05:27:09,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:09,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3422 transitions. [2021-11-03 05:27:09,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:27:09,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:09,468 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, 1, 1, 1, 1, 1, 1, 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 05:27:09,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-03 05:27:09,469 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:09,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1188474430, now seen corresponding path program 1 times [2021-11-03 05:27:09,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:09,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424514583] [2021-11-03 05:27:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:09,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:09,571 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 05:27:09,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:09,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424514583] [2021-11-03 05:27:09,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424514583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:09,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:09,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:27:09,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734917519] [2021-11-03 05:27:09,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:09,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:09,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:09,573 INFO L87 Difference]: Start difference. First operand 2492 states and 3422 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:13,961 INFO L93 Difference]: Finished difference Result 4208 states and 5748 transitions. [2021-11-03 05:27:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:27:13,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:27:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:13,965 INFO L225 Difference]: With dead ends: 4208 [2021-11-03 05:27:13,965 INFO L226 Difference]: Without dead ends: 4044 [2021-11-03 05:27:13,966 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 05:27:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-11-03 05:27:14,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2492. [2021-11-03 05:27:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3930753564154785) internal successors, (3420), 2491 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3420 transitions. [2021-11-03 05:27:14,635 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3420 transitions. Word has length 130 [2021-11-03 05:27:14,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:14,635 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3420 transitions. [2021-11-03 05:27:14,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3420 transitions. [2021-11-03 05:27:14,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:27:14,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:14,637 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] [2021-11-03 05:27:14,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-03 05:27:14,637 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:14,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:14,638 INFO L85 PathProgramCache]: Analyzing trace with hash 375118542, now seen corresponding path program 1 times [2021-11-03 05:27:14,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:14,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439891371] [2021-11-03 05:27:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:14,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:14,757 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 05:27:14,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:14,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439891371] [2021-11-03 05:27:14,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439891371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:14,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:14,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:27:14,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070928054] [2021-11-03 05:27:14,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:14,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:14,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:14,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:14,760 INFO L87 Difference]: Start difference. First operand 2492 states and 3420 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:19,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:19,167 INFO L93 Difference]: Finished difference Result 4208 states and 5746 transitions. [2021-11-03 05:27:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:27:19,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:27:19,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:19,171 INFO L225 Difference]: With dead ends: 4208 [2021-11-03 05:27:19,171 INFO L226 Difference]: Without dead ends: 4044 [2021-11-03 05:27:19,171 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 05:27:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-11-03 05:27:19,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2492. [2021-11-03 05:27:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3922606924643584) internal successors, (3418), 2491 states have internal predecessors, (3418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3418 transitions. [2021-11-03 05:27:19,815 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3418 transitions. Word has length 130 [2021-11-03 05:27:19,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:19,816 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3418 transitions. [2021-11-03 05:27:19,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3418 transitions. [2021-11-03 05:27:19,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:27:19,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:19,818 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] [2021-11-03 05:27:19,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-03 05:27:19,818 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:19,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:19,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1184670454, now seen corresponding path program 1 times [2021-11-03 05:27:19,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:19,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611567484] [2021-11-03 05:27:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:19,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:19,986 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 05:27:19,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:19,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611567484] [2021-11-03 05:27:19,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611567484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:19,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:19,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:27:19,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943298352] [2021-11-03 05:27:19,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:27:19,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:19,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:27:19,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:27:19,988 INFO L87 Difference]: Start difference. First operand 2492 states and 3418 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:27,186 INFO L93 Difference]: Finished difference Result 4986 states and 6774 transitions. [2021-11-03 05:27:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:27:27,187 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:27:27,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:27,191 INFO L225 Difference]: With dead ends: 4986 [2021-11-03 05:27:27,191 INFO L226 Difference]: Without dead ends: 4818 [2021-11-03 05:27:27,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:27:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2021-11-03 05:27:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 2500. [2021-11-03 05:27:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2463 states have (on average 1.3909866017052375) internal successors, (3426), 2499 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3426 transitions. [2021-11-03 05:27:27,908 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3426 transitions. Word has length 130 [2021-11-03 05:27:27,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:27,908 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 3426 transitions. [2021-11-03 05:27:27,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:27,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3426 transitions. [2021-11-03 05:27:27,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:27:27,910 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:27,911 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] [2021-11-03 05:27:27,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-03 05:27:27,911 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:27,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:27,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1961089731, now seen corresponding path program 1 times [2021-11-03 05:27:27,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:27,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317957343] [2021-11-03 05:27:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:27,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:28,029 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 05:27:28,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:28,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317957343] [2021-11-03 05:27:28,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317957343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:28,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:28,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:27:28,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318077257] [2021-11-03 05:27:28,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:28,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:28,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:28,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:28,031 INFO L87 Difference]: Start difference. First operand 2500 states and 3426 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:32,378 INFO L93 Difference]: Finished difference Result 4196 states and 5724 transitions. [2021-11-03 05:27:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:27:32,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:27:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:32,381 INFO L225 Difference]: With dead ends: 4196 [2021-11-03 05:27:32,381 INFO L226 Difference]: Without dead ends: 4044 [2021-11-03 05:27:32,382 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 05:27:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-11-03 05:27:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2500. [2021-11-03 05:27:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2463 states have (on average 1.3901745838408446) internal successors, (3424), 2499 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3424 transitions. [2021-11-03 05:27:33,070 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3424 transitions. Word has length 130 [2021-11-03 05:27:33,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:33,070 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 3424 transitions. [2021-11-03 05:27:33,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3424 transitions. [2021-11-03 05:27:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:27:33,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:33,072 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] [2021-11-03 05:27:33,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-03 05:27:33,073 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:33,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:33,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1103678637, now seen corresponding path program 1 times [2021-11-03 05:27:33,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:33,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183247940] [2021-11-03 05:27:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:33,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:33,195 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 05:27:33,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:33,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183247940] [2021-11-03 05:27:33,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183247940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:33,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:33,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:27:33,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758915388] [2021-11-03 05:27:33,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:33,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:33,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:33,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:33,196 INFO L87 Difference]: Start difference. First operand 2500 states and 3424 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:37,598 INFO L93 Difference]: Finished difference Result 4085 states and 5544 transitions. [2021-11-03 05:27:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:27:37,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:27:37,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:37,602 INFO L225 Difference]: With dead ends: 4085 [2021-11-03 05:27:37,602 INFO L226 Difference]: Without dead ends: 3947 [2021-11-03 05:27:37,603 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 05:27:37,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3947 states. [2021-11-03 05:27:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3947 to 2500. [2021-11-03 05:27:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2463 states have (on average 1.3893625659764515) internal successors, (3422), 2499 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3422 transitions. [2021-11-03 05:27:38,297 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3422 transitions. Word has length 130 [2021-11-03 05:27:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:38,297 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 3422 transitions. [2021-11-03 05:27:38,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3422 transitions. [2021-11-03 05:27:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:27:38,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:38,299 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] [2021-11-03 05:27:38,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-03 05:27:38,299 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:38,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:38,300 INFO L85 PathProgramCache]: Analyzing trace with hash -410647868, now seen corresponding path program 1 times [2021-11-03 05:27:38,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:38,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832537660] [2021-11-03 05:27:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:38,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:38,411 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 05:27:38,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:38,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832537660] [2021-11-03 05:27:38,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832537660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:38,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:38,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:27:38,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720062746] [2021-11-03 05:27:38,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:38,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:38,413 INFO L87 Difference]: Start difference. First operand 2500 states and 3422 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:43,332 INFO L93 Difference]: Finished difference Result 4286 states and 5862 transitions. [2021-11-03 05:27:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:27:43,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:27:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:43,336 INFO L225 Difference]: With dead ends: 4286 [2021-11-03 05:27:43,336 INFO L226 Difference]: Without dead ends: 4084 [2021-11-03 05:27:43,337 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 05:27:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-11-03 05:27:44,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2500. [2021-11-03 05:27:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2463 states have (on average 1.3885505481120584) internal successors, (3420), 2499 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3420 transitions. [2021-11-03 05:27:44,066 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3420 transitions. Word has length 130 [2021-11-03 05:27:44,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:44,066 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 3420 transitions. [2021-11-03 05:27:44,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3420 transitions. [2021-11-03 05:27:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:27:44,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:44,068 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] [2021-11-03 05:27:44,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-03 05:27:44,068 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:44,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash 594284541, now seen corresponding path program 1 times [2021-11-03 05:27:44,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:44,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837067673] [2021-11-03 05:27:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:44,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:44,165 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 05:27:44,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:44,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837067673] [2021-11-03 05:27:44,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837067673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:44,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:44,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:27:44,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671878457] [2021-11-03 05:27:44,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:44,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:44,167 INFO L87 Difference]: Start difference. First operand 2500 states and 3420 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:48,792 INFO L93 Difference]: Finished difference Result 4272 states and 5832 transitions. [2021-11-03 05:27:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:27:48,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:27:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:48,796 INFO L225 Difference]: With dead ends: 4272 [2021-11-03 05:27:48,796 INFO L226 Difference]: Without dead ends: 4084 [2021-11-03 05:27:48,797 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 05:27:48,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-11-03 05:27:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2496. [2021-11-03 05:27:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2459 states have (on average 1.3887759251728344) internal successors, (3415), 2495 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3415 transitions. [2021-11-03 05:27:49,489 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3415 transitions. Word has length 131 [2021-11-03 05:27:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:49,489 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3415 transitions. [2021-11-03 05:27:49,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3415 transitions. [2021-11-03 05:27:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:27:49,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:49,492 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] [2021-11-03 05:27:49,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-03 05:27:49,492 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1685578068, now seen corresponding path program 1 times [2021-11-03 05:27:49,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:49,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258302454] [2021-11-03 05:27:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:49,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:49,591 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 05:27:49,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:49,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258302454] [2021-11-03 05:27:49,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258302454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:49,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:49,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:27:49,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628778821] [2021-11-03 05:27:49,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:49,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:49,593 INFO L87 Difference]: Start difference. First operand 2496 states and 3415 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:54,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:54,018 INFO L93 Difference]: Finished difference Result 4069 states and 5517 transitions. [2021-11-03 05:27:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:27:54,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:27:54,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:54,021 INFO L225 Difference]: With dead ends: 4069 [2021-11-03 05:27:54,021 INFO L226 Difference]: Without dead ends: 3943 [2021-11-03 05:27:54,022 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 05:27:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2021-11-03 05:27:54,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 2496. [2021-11-03 05:27:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2459 states have (on average 1.3883692557950387) internal successors, (3414), 2495 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3414 transitions. [2021-11-03 05:27:54,720 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3414 transitions. Word has length 131 [2021-11-03 05:27:54,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:54,721 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3414 transitions. [2021-11-03 05:27:54,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:54,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3414 transitions. [2021-11-03 05:27:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:27:54,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:54,723 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] [2021-11-03 05:27:54,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-03 05:27:54,723 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:27:54,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:54,723 INFO L85 PathProgramCache]: Analyzing trace with hash -256774829, now seen corresponding path program 1 times [2021-11-03 05:27:54,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:27:54,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588175569] [2021-11-03 05:27:54,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:54,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:27:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:54,843 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 05:27:54,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:27:54,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588175569] [2021-11-03 05:27:54,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588175569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:54,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:54,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:27:54,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176091087] [2021-11-03 05:27:54,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:54,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:27:54,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:54,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:54,846 INFO L87 Difference]: Start difference. First operand 2496 states and 3414 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:27:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:59,819 INFO L93 Difference]: Finished difference Result 4253 states and 5809 transitions. [2021-11-03 05:27:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:27:59,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:27:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:59,823 INFO L225 Difference]: With dead ends: 4253 [2021-11-03 05:27:59,823 INFO L226 Difference]: Without dead ends: 4084 [2021-11-03 05:27:59,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:27:59,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-11-03 05:28:00,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2492. [2021-11-03 05:28:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3885947046843177) internal successors, (3409), 2491 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:00,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3409 transitions. [2021-11-03 05:28:00,558 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3409 transitions. Word has length 131 [2021-11-03 05:28:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:00,558 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3409 transitions. [2021-11-03 05:28:00,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3409 transitions. [2021-11-03 05:28:00,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:28:00,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:00,560 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] [2021-11-03 05:28:00,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-03 05:28:00,561 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:00,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:00,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1830288818, now seen corresponding path program 1 times [2021-11-03 05:28:00,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:00,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418105672] [2021-11-03 05:28:00,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:00,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:00,666 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 05:28:00,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:00,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418105672] [2021-11-03 05:28:00,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418105672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:00,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:00,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:28:00,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865485573] [2021-11-03 05:28:00,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:28:00,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:00,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:28:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:28:00,667 INFO L87 Difference]: Start difference. First operand 2492 states and 3409 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:05,046 INFO L93 Difference]: Finished difference Result 4065 states and 5511 transitions. [2021-11-03 05:28:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:28:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:28:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:05,050 INFO L225 Difference]: With dead ends: 4065 [2021-11-03 05:28:05,050 INFO L226 Difference]: Without dead ends: 3939 [2021-11-03 05:28:05,051 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 05:28:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-11-03 05:28:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 2492. [2021-11-03 05:28:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3881873727087577) internal successors, (3408), 2491 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3408 transitions. [2021-11-03 05:28:05,796 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3408 transitions. Word has length 131 [2021-11-03 05:28:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:05,796 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3408 transitions. [2021-11-03 05:28:05,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3408 transitions. [2021-11-03 05:28:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:28:05,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:05,798 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] [2021-11-03 05:28:05,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-03 05:28:05,799 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -957478722, now seen corresponding path program 1 times [2021-11-03 05:28:05,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:05,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810488231] [2021-11-03 05:28:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:05,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:05,908 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 05:28:05,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:05,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810488231] [2021-11-03 05:28:05,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810488231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:05,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:05,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:28:05,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063750327] [2021-11-03 05:28:05,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:28:05,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:05,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:28:05,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:28:05,910 INFO L87 Difference]: Start difference. First operand 2492 states and 3408 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:10,789 INFO L93 Difference]: Finished difference Result 4258 states and 5815 transitions. [2021-11-03 05:28:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:28:10,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:28:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:10,794 INFO L225 Difference]: With dead ends: 4258 [2021-11-03 05:28:10,794 INFO L226 Difference]: Without dead ends: 4084 [2021-11-03 05:28:10,795 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 05:28:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-11-03 05:28:11,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2488. [2021-11-03 05:28:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2451 states have (on average 1.3884128926968584) internal successors, (3403), 2487 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3403 transitions. [2021-11-03 05:28:11,505 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3403 transitions. Word has length 131 [2021-11-03 05:28:11,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:11,505 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 3403 transitions. [2021-11-03 05:28:11,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:11,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3403 transitions. [2021-11-03 05:28:11,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:28:11,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:11,507 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] [2021-11-03 05:28:11,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-03 05:28:11,508 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:11,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:11,508 INFO L85 PathProgramCache]: Analyzing trace with hash 89991905, now seen corresponding path program 1 times [2021-11-03 05:28:11,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:11,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154106347] [2021-11-03 05:28:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:11,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:11,634 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 05:28:11,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:11,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154106347] [2021-11-03 05:28:11,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154106347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:11,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:11,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:28:11,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205714794] [2021-11-03 05:28:11,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:28:11,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:11,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:28:11,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:28:11,636 INFO L87 Difference]: Start difference. First operand 2488 states and 3403 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:16,481 INFO L93 Difference]: Finished difference Result 4061 states and 5505 transitions. [2021-11-03 05:28:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:28:16,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:28:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:16,484 INFO L225 Difference]: With dead ends: 4061 [2021-11-03 05:28:16,484 INFO L226 Difference]: Without dead ends: 3935 [2021-11-03 05:28:16,485 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 05:28:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-11-03 05:28:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2488. [2021-11-03 05:28:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2451 states have (on average 1.3880048959608322) internal successors, (3402), 2487 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3402 transitions. [2021-11-03 05:28:17,203 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3402 transitions. Word has length 131 [2021-11-03 05:28:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:17,203 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 3402 transitions. [2021-11-03 05:28:17,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3402 transitions. [2021-11-03 05:28:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:28:17,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:17,205 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] [2021-11-03 05:28:17,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-03 05:28:17,205 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:17,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1784427666, now seen corresponding path program 1 times [2021-11-03 05:28:17,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:17,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662917662] [2021-11-03 05:28:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:17,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:17,325 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 05:28:17,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:17,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662917662] [2021-11-03 05:28:17,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662917662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:17,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:17,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:28:17,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116064748] [2021-11-03 05:28:17,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:28:17,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:28:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:28:17,326 INFO L87 Difference]: Start difference. First operand 2488 states and 3402 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:22,143 INFO L93 Difference]: Finished difference Result 4247 states and 5799 transitions. [2021-11-03 05:28:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:28:22,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:28:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:22,147 INFO L225 Difference]: With dead ends: 4247 [2021-11-03 05:28:22,147 INFO L226 Difference]: Without dead ends: 4084 [2021-11-03 05:28:22,148 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 05:28:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-11-03 05:28:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2484. [2021-11-03 05:28:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.388230486309767) internal successors, (3397), 2483 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3397 transitions. [2021-11-03 05:28:22,903 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3397 transitions. Word has length 131 [2021-11-03 05:28:22,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:22,904 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3397 transitions. [2021-11-03 05:28:22,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3397 transitions. [2021-11-03 05:28:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:28:22,906 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:22,906 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] [2021-11-03 05:28:22,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-03 05:28:22,906 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash 819465922, now seen corresponding path program 1 times [2021-11-03 05:28:22,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:22,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554403416] [2021-11-03 05:28:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:22,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:23,005 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 05:28:23,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:23,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554403416] [2021-11-03 05:28:23,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554403416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:23,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:23,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:28:23,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252477315] [2021-11-03 05:28:23,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:28:23,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:23,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:28:23,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:28:23,007 INFO L87 Difference]: Start difference. First operand 2484 states and 3397 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:27,814 INFO L93 Difference]: Finished difference Result 4306 states and 5875 transitions. [2021-11-03 05:28:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:28:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:28:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:27,818 INFO L225 Difference]: With dead ends: 4306 [2021-11-03 05:28:27,818 INFO L226 Difference]: Without dead ends: 4084 [2021-11-03 05:28:27,819 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 05:28:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-11-03 05:28:28,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2476. [2021-11-03 05:28:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2439 states have (on average 1.3886838868388685) internal successors, (3387), 2475 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3387 transitions. [2021-11-03 05:28:28,577 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3387 transitions. Word has length 131 [2021-11-03 05:28:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:28,577 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 3387 transitions. [2021-11-03 05:28:28,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:28,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3387 transitions. [2021-11-03 05:28:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:28:28,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:28,579 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] [2021-11-03 05:28:28,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-03 05:28:28,580 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:28,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1707692001, now seen corresponding path program 1 times [2021-11-03 05:28:28,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:28,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030639527] [2021-11-03 05:28:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:28,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:28,676 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 05:28:28,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:28,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030639527] [2021-11-03 05:28:28,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030639527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:28,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:28,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:28:28,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761911752] [2021-11-03 05:28:28,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:28:28,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:28:28,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:28:28,679 INFO L87 Difference]: Start difference. First operand 2476 states and 3387 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:33,100 INFO L93 Difference]: Finished difference Result 4065 states and 5510 transitions. [2021-11-03 05:28:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:28:33,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:28:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:33,104 INFO L225 Difference]: With dead ends: 4065 [2021-11-03 05:28:33,104 INFO L226 Difference]: Without dead ends: 3923 [2021-11-03 05:28:33,104 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 05:28:33,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2021-11-03 05:28:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 2476. [2021-11-03 05:28:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2439 states have (on average 1.3878638786387865) internal successors, (3385), 2475 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3385 transitions. [2021-11-03 05:28:33,836 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3385 transitions. Word has length 131 [2021-11-03 05:28:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:33,836 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 3385 transitions. [2021-11-03 05:28:33,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3385 transitions. [2021-11-03 05:28:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:28:33,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:33,838 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] [2021-11-03 05:28:33,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-03 05:28:33,838 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:33,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:33,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1124927250, now seen corresponding path program 1 times [2021-11-03 05:28:33,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:33,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816280434] [2021-11-03 05:28:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:33,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:33,970 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 05:28:33,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:33,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816280434] [2021-11-03 05:28:33,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816280434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:33,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:33,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:28:33,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050058022] [2021-11-03 05:28:33,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:28:33,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:33,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:28:33,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:28:33,972 INFO L87 Difference]: Start difference. First operand 2476 states and 3385 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:38,817 INFO L93 Difference]: Finished difference Result 4051 states and 5487 transitions. [2021-11-03 05:28:38,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:28:38,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 05:28:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:38,821 INFO L225 Difference]: With dead ends: 4051 [2021-11-03 05:28:38,821 INFO L226 Difference]: Without dead ends: 3923 [2021-11-03 05:28:38,821 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 05:28:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2021-11-03 05:28:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 2476. [2021-11-03 05:28:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2439 states have (on average 1.3870438704387045) internal successors, (3383), 2475 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3383 transitions. [2021-11-03 05:28:39,562 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3383 transitions. Word has length 131 [2021-11-03 05:28:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:39,562 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 3383 transitions. [2021-11-03 05:28:39,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3383 transitions. [2021-11-03 05:28:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:28:39,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:39,565 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] [2021-11-03 05:28:39,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-03 05:28:39,565 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:39,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1857839882, now seen corresponding path program 1 times [2021-11-03 05:28:39,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:39,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513226976] [2021-11-03 05:28:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:39,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:39,747 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 05:28:39,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:39,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513226976] [2021-11-03 05:28:39,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513226976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:39,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:39,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:28:39,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331095958] [2021-11-03 05:28:39,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:28:39,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:39,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:28:39,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:28:39,749 INFO L87 Difference]: Start difference. First operand 2476 states and 3383 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:47,181 INFO L93 Difference]: Finished difference Result 4925 states and 6661 transitions. [2021-11-03 05:28:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:28:47,181 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:28:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:47,185 INFO L225 Difference]: With dead ends: 4925 [2021-11-03 05:28:47,185 INFO L226 Difference]: Without dead ends: 4767 [2021-11-03 05:28:47,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:28:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4767 states. [2021-11-03 05:28:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4767 to 2480. [2021-11-03 05:28:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2443 states have (on average 1.3864101514531313) internal successors, (3387), 2479 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3387 transitions. [2021-11-03 05:28:47,974 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3387 transitions. Word has length 132 [2021-11-03 05:28:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:47,975 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 3387 transitions. [2021-11-03 05:28:47,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3387 transitions. [2021-11-03 05:28:47,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:28:47,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:47,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:47,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-03 05:28:47,977 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:47,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:47,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1817096829, now seen corresponding path program 1 times [2021-11-03 05:28:47,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:47,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201100856] [2021-11-03 05:28:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:47,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:48,144 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 05:28:48,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:48,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201100856] [2021-11-03 05:28:48,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201100856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:48,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:48,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:28:48,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206061127] [2021-11-03 05:28:48,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:28:48,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:28:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:28:48,145 INFO L87 Difference]: Start difference. First operand 2480 states and 3387 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:55,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:55,491 INFO L93 Difference]: Finished difference Result 4740 states and 6393 transitions. [2021-11-03 05:28:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:28:55,491 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:28:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:55,495 INFO L225 Difference]: With dead ends: 4740 [2021-11-03 05:28:55,495 INFO L226 Difference]: Without dead ends: 4604 [2021-11-03 05:28:55,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:28:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2021-11-03 05:28:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 2484. [2021-11-03 05:28:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.3857785042909685) internal successors, (3391), 2483 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3391 transitions. [2021-11-03 05:28:56,317 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3391 transitions. Word has length 132 [2021-11-03 05:28:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:56,317 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3391 transitions. [2021-11-03 05:28:56,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3391 transitions. [2021-11-03 05:28:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:28:56,319 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:56,319 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, 1, 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 05:28:56,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-03 05:28:56,319 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:28:56,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:56,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1844159447, now seen corresponding path program 1 times [2021-11-03 05:28:56,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:28:56,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363733596] [2021-11-03 05:28:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:56,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:28:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:56,448 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 05:28:56,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:28:56,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363733596] [2021-11-03 05:28:56,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363733596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:56,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:56,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:28:56,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492682219] [2021-11-03 05:28:56,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:28:56,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:28:56,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:28:56,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:28:56,450 INFO L87 Difference]: Start difference. First operand 2484 states and 3391 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:01,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:01,409 INFO L93 Difference]: Finished difference Result 4059 states and 5495 transitions. [2021-11-03 05:29:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:29:01,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:01,412 INFO L225 Difference]: With dead ends: 4059 [2021-11-03 05:29:01,413 INFO L226 Difference]: Without dead ends: 3927 [2021-11-03 05:29:01,413 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 05:29:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2021-11-03 05:29:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 2484. [2021-11-03 05:29:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.3853698406211687) internal successors, (3390), 2483 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3390 transitions. [2021-11-03 05:29:02,235 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3390 transitions. Word has length 132 [2021-11-03 05:29:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:02,236 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3390 transitions. [2021-11-03 05:29:02,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3390 transitions. [2021-11-03 05:29:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:29:02,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:02,238 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] [2021-11-03 05:29:02,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-03 05:29:02,238 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:29:02,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:02,238 INFO L85 PathProgramCache]: Analyzing trace with hash 873313026, now seen corresponding path program 1 times [2021-11-03 05:29:02,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:29:02,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585196596] [2021-11-03 05:29:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:02,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:29:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:02,356 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 05:29:02,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:29:02,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585196596] [2021-11-03 05:29:02,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585196596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:02,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:02,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:29:02,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119049087] [2021-11-03 05:29:02,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:29:02,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:29:02,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:29:02,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:02,358 INFO L87 Difference]: Start difference. First operand 2484 states and 3390 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:07,027 INFO L93 Difference]: Finished difference Result 4053 states and 5485 transitions. [2021-11-03 05:29:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:29:07,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:07,030 INFO L225 Difference]: With dead ends: 4053 [2021-11-03 05:29:07,030 INFO L226 Difference]: Without dead ends: 3927 [2021-11-03 05:29:07,031 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 05:29:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2021-11-03 05:29:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 2484. [2021-11-03 05:29:07,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.384961176951369) internal successors, (3389), 2483 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3389 transitions. [2021-11-03 05:29:07,827 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3389 transitions. Word has length 132 [2021-11-03 05:29:07,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:07,827 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3389 transitions. [2021-11-03 05:29:07,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:07,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3389 transitions. [2021-11-03 05:29:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:29:07,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:07,829 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] [2021-11-03 05:29:07,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-03 05:29:07,829 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:29:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1191592964, now seen corresponding path program 1 times [2021-11-03 05:29:07,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:29:07,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510381993] [2021-11-03 05:29:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:07,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:29:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:07,959 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 05:29:07,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:29:07,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510381993] [2021-11-03 05:29:07,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510381993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:07,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:07,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:29:07,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579725550] [2021-11-03 05:29:07,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:29:07,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:29:07,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:29:07,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:07,961 INFO L87 Difference]: Start difference. First operand 2484 states and 3389 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:12,681 INFO L93 Difference]: Finished difference Result 4059 states and 5493 transitions. [2021-11-03 05:29:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:29:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:12,685 INFO L225 Difference]: With dead ends: 4059 [2021-11-03 05:29:12,685 INFO L226 Difference]: Without dead ends: 3927 [2021-11-03 05:29:12,685 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 05:29:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2021-11-03 05:29:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 2484. [2021-11-03 05:29:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.3845525132815693) internal successors, (3388), 2483 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3388 transitions. [2021-11-03 05:29:13,484 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3388 transitions. Word has length 132 [2021-11-03 05:29:13,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:13,484 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3388 transitions. [2021-11-03 05:29:13,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3388 transitions. [2021-11-03 05:29:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:29:13,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:13,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:13,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-03 05:29:13,487 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:29:13,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:13,487 INFO L85 PathProgramCache]: Analyzing trace with hash -158349254, now seen corresponding path program 1 times [2021-11-03 05:29:13,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:29:13,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336982119] [2021-11-03 05:29:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:13,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:29:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:13,581 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 05:29:13,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:29:13,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336982119] [2021-11-03 05:29:13,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336982119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:13,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:13,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:29:13,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700073414] [2021-11-03 05:29:13,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:29:13,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:29:13,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:29:13,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:13,582 INFO L87 Difference]: Start difference. First operand 2484 states and 3388 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:18,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:18,451 INFO L93 Difference]: Finished difference Result 4173 states and 5670 transitions. [2021-11-03 05:29:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:29:18,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:18,454 INFO L225 Difference]: With dead ends: 4173 [2021-11-03 05:29:18,454 INFO L226 Difference]: Without dead ends: 4024 [2021-11-03 05:29:18,455 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 05:29:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-11-03 05:29:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 2484. [2021-11-03 05:29:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.3841438496117695) internal successors, (3387), 2483 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3387 transitions. [2021-11-03 05:29:19,269 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3387 transitions. Word has length 132 [2021-11-03 05:29:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:19,269 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3387 transitions. [2021-11-03 05:29:19,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:19,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3387 transitions. [2021-11-03 05:29:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:29:19,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:19,272 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] [2021-11-03 05:29:19,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-03 05:29:19,272 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:29:19,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:19,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2138644262, now seen corresponding path program 1 times [2021-11-03 05:29:19,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:29:19,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567731200] [2021-11-03 05:29:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:19,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:29:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:19,383 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 05:29:19,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:29:19,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567731200] [2021-11-03 05:29:19,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567731200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:19,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:19,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:29:19,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421517632] [2021-11-03 05:29:19,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:29:19,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:29:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:29:19,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:19,385 INFO L87 Difference]: Start difference. First operand 2484 states and 3387 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:24,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:24,472 INFO L93 Difference]: Finished difference Result 4053 states and 5481 transitions. [2021-11-03 05:29:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:29:24,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:24,475 INFO L225 Difference]: With dead ends: 4053 [2021-11-03 05:29:24,476 INFO L226 Difference]: Without dead ends: 3927 [2021-11-03 05:29:24,476 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 05:29:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2021-11-03 05:29:25,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 2484. [2021-11-03 05:29:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.3837351859419698) internal successors, (3386), 2483 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3386 transitions. [2021-11-03 05:29:25,295 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3386 transitions. Word has length 132 [2021-11-03 05:29:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:25,295 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3386 transitions. [2021-11-03 05:29:25,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3386 transitions. [2021-11-03 05:29:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:29:25,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:25,297 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] [2021-11-03 05:29:25,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-03 05:29:25,297 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:29:25,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:25,298 INFO L85 PathProgramCache]: Analyzing trace with hash 501672260, now seen corresponding path program 1 times [2021-11-03 05:29:25,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:29:25,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794143172] [2021-11-03 05:29:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:25,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:29:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:25,407 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 05:29:25,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:29:25,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794143172] [2021-11-03 05:29:25,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794143172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:25,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:25,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:29:25,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873151696] [2021-11-03 05:29:25,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:29:25,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:29:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:29:25,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:25,408 INFO L87 Difference]: Start difference. First operand 2484 states and 3386 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:30,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:30,246 INFO L93 Difference]: Finished difference Result 4163 states and 5653 transitions. [2021-11-03 05:29:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:29:30,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:30,250 INFO L225 Difference]: With dead ends: 4163 [2021-11-03 05:29:30,250 INFO L226 Difference]: Without dead ends: 4024 [2021-11-03 05:29:30,250 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 05:29:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-11-03 05:29:31,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 2484. [2021-11-03 05:29:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2447 states have (on average 1.38332652227217) internal successors, (3385), 2483 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3385 transitions. [2021-11-03 05:29:31,066 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3385 transitions. Word has length 132 [2021-11-03 05:29:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:31,066 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3385 transitions. [2021-11-03 05:29:31,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:31,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3385 transitions. [2021-11-03 05:29:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:29:31,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:31,069 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] [2021-11-03 05:29:31,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-03 05:29:31,069 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:29:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1580630205, now seen corresponding path program 1 times [2021-11-03 05:29:31,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:29:31,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087904800] [2021-11-03 05:29:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:31,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:29:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:31,264 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 05:29:31,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:29:31,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087904800] [2021-11-03 05:29:31,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087904800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:31,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:31,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:29:31,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877498538] [2021-11-03 05:29:31,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:29:31,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:29:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:29:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:29:31,265 INFO L87 Difference]: Start difference. First operand 2484 states and 3385 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:39,289 INFO L93 Difference]: Finished difference Result 4720 states and 6359 transitions. [2021-11-03 05:29:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:29:39,290 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:39,293 INFO L225 Difference]: With dead ends: 4720 [2021-11-03 05:29:39,293 INFO L226 Difference]: Without dead ends: 4594 [2021-11-03 05:29:39,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:29:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-11-03 05:29:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 2488. [2021-11-03 05:29:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2451 states have (on average 1.3827009383924929) internal successors, (3389), 2487 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3389 transitions. [2021-11-03 05:29:40,121 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3389 transitions. Word has length 132 [2021-11-03 05:29:40,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:40,121 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 3389 transitions. [2021-11-03 05:29:40,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3389 transitions. [2021-11-03 05:29:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:29:40,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:40,123 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] [2021-11-03 05:29:40,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-03 05:29:40,123 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:29:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash -976530646, now seen corresponding path program 1 times [2021-11-03 05:29:40,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:29:40,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655457818] [2021-11-03 05:29:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:40,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:29:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:40,290 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 05:29:40,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:29:40,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655457818] [2021-11-03 05:29:40,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655457818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:40,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:40,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:29:40,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756598073] [2021-11-03 05:29:40,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:29:40,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:29:40,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:29:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:29:40,292 INFO L87 Difference]: Start difference. First operand 2488 states and 3389 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:48,101 INFO L93 Difference]: Finished difference Result 4915 states and 6643 transitions. [2021-11-03 05:29:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:29:48,102 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:48,105 INFO L225 Difference]: With dead ends: 4915 [2021-11-03 05:29:48,105 INFO L226 Difference]: Without dead ends: 4766 [2021-11-03 05:29:48,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:29:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2021-11-03 05:29:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 2492. [2021-11-03 05:29:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3820773930753565) internal successors, (3393), 2491 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3393 transitions. [2021-11-03 05:29:48,945 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3393 transitions. Word has length 132 [2021-11-03 05:29:48,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:48,945 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3393 transitions. [2021-11-03 05:29:48,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:48,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3393 transitions. [2021-11-03 05:29:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:29:48,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:48,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:48,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-03 05:29:48,948 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:29:48,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:48,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1635303636, now seen corresponding path program 1 times [2021-11-03 05:29:48,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:29:48,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996449991] [2021-11-03 05:29:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:48,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:29:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:49,048 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 05:29:49,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:29:49,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996449991] [2021-11-03 05:29:49,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996449991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:49,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:49,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:29:49,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195486677] [2021-11-03 05:29:49,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:29:49,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:29:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:29:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:49,050 INFO L87 Difference]: Start difference. First operand 2492 states and 3393 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:53,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:53,809 INFO L93 Difference]: Finished difference Result 4063 states and 5491 transitions. [2021-11-03 05:29:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:29:53,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:53,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:53,813 INFO L225 Difference]: With dead ends: 4063 [2021-11-03 05:29:53,813 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:29:53,814 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 05:29:53,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:29:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2492. [2021-11-03 05:29:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3816700610997963) internal successors, (3392), 2491 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3392 transitions. [2021-11-03 05:29:54,655 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3392 transitions. Word has length 132 [2021-11-03 05:29:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:54,656 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3392 transitions. [2021-11-03 05:29:54,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3392 transitions. [2021-11-03 05:29:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:29:54,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:54,658 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] [2021-11-03 05:29:54,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-03 05:29:54,658 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:29:54,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1141598856, now seen corresponding path program 1 times [2021-11-03 05:29:54,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:29:54,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763421589] [2021-11-03 05:29:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:54,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:29:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:54,763 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 05:29:54,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:29:54,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763421589] [2021-11-03 05:29:54,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763421589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:54,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:54,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:29:54,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477956508] [2021-11-03 05:29:54,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:29:54,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:29:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:29:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:54,765 INFO L87 Difference]: Start difference. First operand 2492 states and 3392 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:59,924 INFO L93 Difference]: Finished difference Result 4057 states and 5480 transitions. [2021-11-03 05:29:59,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:29:59,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:29:59,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:59,927 INFO L225 Difference]: With dead ends: 4057 [2021-11-03 05:29:59,927 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:29:59,928 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 05:29:59,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:30:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2492. [2021-11-03 05:30:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3812627291242363) internal successors, (3391), 2491 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3391 transitions. [2021-11-03 05:30:00,774 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3391 transitions. Word has length 132 [2021-11-03 05:30:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:00,774 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3391 transitions. [2021-11-03 05:30:00,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3391 transitions. [2021-11-03 05:30:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:00,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:00,777 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] [2021-11-03 05:30:00,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-03 05:30:00,777 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:00,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash -164358129, now seen corresponding path program 1 times [2021-11-03 05:30:00,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:00,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276646992] [2021-11-03 05:30:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:00,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:00,873 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 05:30:00,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:00,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276646992] [2021-11-03 05:30:00,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276646992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:00,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:00,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:30:00,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337249094] [2021-11-03 05:30:00,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:30:00,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:00,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:30:00,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:30:00,875 INFO L87 Difference]: Start difference. First operand 2492 states and 3391 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:05,626 INFO L93 Difference]: Finished difference Result 4062 states and 5487 transitions. [2021-11-03 05:30:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:30:05,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:30:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:05,630 INFO L225 Difference]: With dead ends: 4062 [2021-11-03 05:30:05,630 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:30:05,630 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 05:30:05,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:30:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2492. [2021-11-03 05:30:06,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3808553971486761) internal successors, (3390), 2491 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3390 transitions. [2021-11-03 05:30:06,487 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3390 transitions. Word has length 132 [2021-11-03 05:30:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:06,488 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3390 transitions. [2021-11-03 05:30:06,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3390 transitions. [2021-11-03 05:30:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:06,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:06,490 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] [2021-11-03 05:30:06,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-03 05:30:06,490 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:06,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash -186231820, now seen corresponding path program 1 times [2021-11-03 05:30:06,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:06,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85362820] [2021-11-03 05:30:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:06,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:06,589 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 05:30:06,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:06,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85362820] [2021-11-03 05:30:06,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85362820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:06,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:06,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:30:06,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305046664] [2021-11-03 05:30:06,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:30:06,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:06,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:30:06,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:30:06,590 INFO L87 Difference]: Start difference. First operand 2492 states and 3390 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:11,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:11,537 INFO L93 Difference]: Finished difference Result 4172 states and 5658 transitions. [2021-11-03 05:30:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:30:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:30:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:11,541 INFO L225 Difference]: With dead ends: 4172 [2021-11-03 05:30:11,541 INFO L226 Difference]: Without dead ends: 4028 [2021-11-03 05:30:11,542 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 05:30:11,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2021-11-03 05:30:12,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 2492. [2021-11-03 05:30:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.3804480651731161) internal successors, (3389), 2491 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3389 transitions. [2021-11-03 05:30:12,404 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3389 transitions. Word has length 132 [2021-11-03 05:30:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:12,404 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3389 transitions. [2021-11-03 05:30:12,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3389 transitions. [2021-11-03 05:30:12,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:12,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:12,406 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] [2021-11-03 05:30:12,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-03 05:30:12,407 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash 667910620, now seen corresponding path program 1 times [2021-11-03 05:30:12,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:12,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335551208] [2021-11-03 05:30:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:12,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:12,504 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 05:30:12,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:12,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335551208] [2021-11-03 05:30:12,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335551208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:12,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:12,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:30:12,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032042160] [2021-11-03 05:30:12,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:30:12,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:12,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:30:12,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:30:12,505 INFO L87 Difference]: Start difference. First operand 2492 states and 3389 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:17,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:17,449 INFO L93 Difference]: Finished difference Result 4062 states and 5485 transitions. [2021-11-03 05:30:17,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:30:17,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:30:17,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:17,452 INFO L225 Difference]: With dead ends: 4062 [2021-11-03 05:30:17,452 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:30:17,453 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 05:30:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:30:18,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2492. [2021-11-03 05:30:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2455 states have (on average 1.380040733197556) internal successors, (3388), 2491 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3388 transitions. [2021-11-03 05:30:18,324 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3388 transitions. Word has length 132 [2021-11-03 05:30:18,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:18,324 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3388 transitions. [2021-11-03 05:30:18,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3388 transitions. [2021-11-03 05:30:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:18,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:18,326 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] [2021-11-03 05:30:18,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-03 05:30:18,326 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash 947399556, now seen corresponding path program 1 times [2021-11-03 05:30:18,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:18,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871318229] [2021-11-03 05:30:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:18,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:18,492 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 05:30:18,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:18,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871318229] [2021-11-03 05:30:18,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871318229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:18,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:18,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:30:18,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629635414] [2021-11-03 05:30:18,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:30:18,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:30:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:30:18,494 INFO L87 Difference]: Start difference. First operand 2492 states and 3388 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:26,419 INFO L93 Difference]: Finished difference Result 4736 states and 6373 transitions. [2021-11-03 05:30:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:30:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:30:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:26,423 INFO L225 Difference]: With dead ends: 4736 [2021-11-03 05:30:26,423 INFO L226 Difference]: Without dead ends: 4604 [2021-11-03 05:30:26,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:30:26,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2021-11-03 05:30:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 2496. [2021-11-03 05:30:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2459 states have (on average 1.3794225294835298) internal successors, (3392), 2495 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3392 transitions. [2021-11-03 05:30:27,306 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3392 transitions. Word has length 132 [2021-11-03 05:30:27,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:27,307 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3392 transitions. [2021-11-03 05:30:27,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3392 transitions. [2021-11-03 05:30:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:27,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:27,309 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] [2021-11-03 05:30:27,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-03 05:30:27,309 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1750091896, now seen corresponding path program 1 times [2021-11-03 05:30:27,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:27,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8035999] [2021-11-03 05:30:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:27,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:27,414 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 05:30:27,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:27,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8035999] [2021-11-03 05:30:27,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8035999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:27,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:27,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:30:27,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345736967] [2021-11-03 05:30:27,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:30:27,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:27,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:30:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:30:27,415 INFO L87 Difference]: Start difference. First operand 2496 states and 3392 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:32,270 INFO L93 Difference]: Finished difference Result 4062 states and 5482 transitions. [2021-11-03 05:30:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:30:32,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:30:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:32,273 INFO L225 Difference]: With dead ends: 4062 [2021-11-03 05:30:32,273 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:30:32,274 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 05:30:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:30:33,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2496. [2021-11-03 05:30:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2459 states have (on average 1.379015860105734) internal successors, (3391), 2495 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3391 transitions. [2021-11-03 05:30:33,161 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3391 transitions. Word has length 132 [2021-11-03 05:30:33,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:33,161 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3391 transitions. [2021-11-03 05:30:33,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:33,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3391 transitions. [2021-11-03 05:30:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:33,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:33,165 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] [2021-11-03 05:30:33,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-03 05:30:33,165 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:33,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:33,166 INFO L85 PathProgramCache]: Analyzing trace with hash -402542662, now seen corresponding path program 1 times [2021-11-03 05:30:33,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:33,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931562870] [2021-11-03 05:30:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:33,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:33,291 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 05:30:33,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:33,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931562870] [2021-11-03 05:30:33,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931562870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:33,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:33,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:30:33,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166668702] [2021-11-03 05:30:33,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:30:33,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:33,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:30:33,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:30:33,293 INFO L87 Difference]: Start difference. First operand 2496 states and 3391 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:38,464 INFO L93 Difference]: Finished difference Result 4181 states and 5662 transitions. [2021-11-03 05:30:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:30:38,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:30:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:38,467 INFO L225 Difference]: With dead ends: 4181 [2021-11-03 05:30:38,468 INFO L226 Difference]: Without dead ends: 4032 [2021-11-03 05:30:38,468 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 05:30:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4032 states. [2021-11-03 05:30:39,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4032 to 2496. [2021-11-03 05:30:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2459 states have (on average 1.378609190727938) internal successors, (3390), 2495 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3390 transitions. [2021-11-03 05:30:39,371 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3390 transitions. Word has length 132 [2021-11-03 05:30:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:39,371 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3390 transitions. [2021-11-03 05:30:39,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3390 transitions. [2021-11-03 05:30:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:39,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:39,373 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] [2021-11-03 05:30:39,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-03 05:30:39,374 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:39,374 INFO L85 PathProgramCache]: Analyzing trace with hash 746516096, now seen corresponding path program 1 times [2021-11-03 05:30:39,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:39,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624191031] [2021-11-03 05:30:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:39,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:39,478 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 05:30:39,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:39,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624191031] [2021-11-03 05:30:39,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624191031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:39,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:39,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:30:39,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201412770] [2021-11-03 05:30:39,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:30:39,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:30:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:30:39,480 INFO L87 Difference]: Start difference. First operand 2496 states and 3390 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:44,450 INFO L93 Difference]: Finished difference Result 4063 states and 5481 transitions. [2021-11-03 05:30:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:30:44,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:30:44,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:44,453 INFO L225 Difference]: With dead ends: 4063 [2021-11-03 05:30:44,453 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:30:44,454 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 05:30:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:30:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2496. [2021-11-03 05:30:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2459 states have (on average 1.3782025213501423) internal successors, (3389), 2495 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3389 transitions. [2021-11-03 05:30:45,388 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3389 transitions. Word has length 132 [2021-11-03 05:30:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:45,388 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3389 transitions. [2021-11-03 05:30:45,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3389 transitions. [2021-11-03 05:30:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:45,390 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:45,390 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] [2021-11-03 05:30:45,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-03 05:30:45,391 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:45,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:45,391 INFO L85 PathProgramCache]: Analyzing trace with hash -371690780, now seen corresponding path program 1 times [2021-11-03 05:30:45,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:45,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309397769] [2021-11-03 05:30:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:45,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:45,496 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 05:30:45,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:45,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309397769] [2021-11-03 05:30:45,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309397769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:45,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:45,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:30:45,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156850258] [2021-11-03 05:30:45,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:30:45,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:45,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:30:45,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:30:45,498 INFO L87 Difference]: Start difference. First operand 2496 states and 3389 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:50,502 INFO L93 Difference]: Finished difference Result 4063 states and 5480 transitions. [2021-11-03 05:30:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:30:50,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:30:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:50,505 INFO L225 Difference]: With dead ends: 4063 [2021-11-03 05:30:50,505 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:30:50,506 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 05:30:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:30:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2496. [2021-11-03 05:30:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2459 states have (on average 1.3777958519723466) internal successors, (3388), 2495 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3388 transitions. [2021-11-03 05:30:51,440 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3388 transitions. Word has length 132 [2021-11-03 05:30:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:51,441 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3388 transitions. [2021-11-03 05:30:51,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3388 transitions. [2021-11-03 05:30:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:51,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:51,443 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] [2021-11-03 05:30:51,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-03 05:30:51,443 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1222186242, now seen corresponding path program 1 times [2021-11-03 05:30:51,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:51,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039640176] [2021-11-03 05:30:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:51,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:51,551 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 05:30:51,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:51,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039640176] [2021-11-03 05:30:51,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039640176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:51,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:51,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:30:51,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6805141] [2021-11-03 05:30:51,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:30:51,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:30:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:30:51,553 INFO L87 Difference]: Start difference. First operand 2496 states and 3388 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:56,855 INFO L93 Difference]: Finished difference Result 4062 states and 5477 transitions. [2021-11-03 05:30:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:30:56,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:30:56,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:56,858 INFO L225 Difference]: With dead ends: 4062 [2021-11-03 05:30:56,859 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:30:56,860 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 05:30:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:30:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2496. [2021-11-03 05:30:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2459 states have (on average 1.3773891825945506) internal successors, (3387), 2495 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3387 transitions. [2021-11-03 05:30:57,791 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3387 transitions. Word has length 132 [2021-11-03 05:30:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:57,791 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3387 transitions. [2021-11-03 05:30:57,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:30:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3387 transitions. [2021-11-03 05:30:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:30:57,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:57,794 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] [2021-11-03 05:30:57,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-03 05:30:57,794 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:30:57,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2054454991, now seen corresponding path program 1 times [2021-11-03 05:30:57,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:30:57,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108093957] [2021-11-03 05:30:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:57,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:30:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:57,993 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 05:30:57,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:30:57,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108093957] [2021-11-03 05:30:57,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108093957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:57,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:57,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:30:57,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782085497] [2021-11-03 05:30:57,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:30:57,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:30:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:30:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:30:57,994 INFO L87 Difference]: Start difference. First operand 2496 states and 3387 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:06,290 INFO L93 Difference]: Finished difference Result 4734 states and 6364 transitions. [2021-11-03 05:31:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:31:06,290 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:31:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:06,294 INFO L225 Difference]: With dead ends: 4734 [2021-11-03 05:31:06,294 INFO L226 Difference]: Without dead ends: 4603 [2021-11-03 05:31:06,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:31:06,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4603 states. [2021-11-03 05:31:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4603 to 2500. [2021-11-03 05:31:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2463 states have (on average 1.3767762890783597) internal successors, (3391), 2499 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3391 transitions. [2021-11-03 05:31:07,252 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3391 transitions. Word has length 132 [2021-11-03 05:31:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:07,253 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 3391 transitions. [2021-11-03 05:31:07,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3391 transitions. [2021-11-03 05:31:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:31:07,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:07,255 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] [2021-11-03 05:31:07,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-03 05:31:07,255 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:31:07,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash -116370780, now seen corresponding path program 1 times [2021-11-03 05:31:07,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:07,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400651000] [2021-11-03 05:31:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:07,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:07,352 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 05:31:07,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:31:07,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400651000] [2021-11-03 05:31:07,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400651000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:07,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:07,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:31:07,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081981660] [2021-11-03 05:31:07,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:31:07,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:31:07,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:31:07,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:31:07,353 INFO L87 Difference]: Start difference. First operand 2500 states and 3391 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:12,374 INFO L93 Difference]: Finished difference Result 4062 states and 5475 transitions. [2021-11-03 05:31:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:31:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:31:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:12,377 INFO L225 Difference]: With dead ends: 4062 [2021-11-03 05:31:12,377 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:31:12,378 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 05:31:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:31:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2500. [2021-11-03 05:31:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2463 states have (on average 1.3763702801461632) internal successors, (3390), 2499 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3390 transitions. [2021-11-03 05:31:13,303 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3390 transitions. Word has length 132 [2021-11-03 05:31:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:13,303 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 3390 transitions. [2021-11-03 05:31:13,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3390 transitions. [2021-11-03 05:31:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:31:13,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:13,305 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] [2021-11-03 05:31:13,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-03 05:31:13,305 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:31:13,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:13,306 INFO L85 PathProgramCache]: Analyzing trace with hash 101687396, now seen corresponding path program 1 times [2021-11-03 05:31:13,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:13,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755292808] [2021-11-03 05:31:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:13,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:13,402 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 05:31:13,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:31:13,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755292808] [2021-11-03 05:31:13,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755292808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:13,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:13,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:31:13,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513527653] [2021-11-03 05:31:13,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:31:13,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:31:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:31:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:31:13,403 INFO L87 Difference]: Start difference. First operand 2500 states and 3390 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:18,570 INFO L93 Difference]: Finished difference Result 4208 states and 5689 transitions. [2021-11-03 05:31:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:31:18,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:31:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:18,574 INFO L225 Difference]: With dead ends: 4208 [2021-11-03 05:31:18,574 INFO L226 Difference]: Without dead ends: 4036 [2021-11-03 05:31:18,575 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 05:31:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4036 states. [2021-11-03 05:31:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4036 to 2500. [2021-11-03 05:31:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2463 states have (on average 1.3755582622817701) internal successors, (3388), 2499 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3388 transitions. [2021-11-03 05:31:19,504 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3388 transitions. Word has length 132 [2021-11-03 05:31:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:19,505 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 3388 transitions. [2021-11-03 05:31:19,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3388 transitions. [2021-11-03 05:31:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:31:19,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:19,507 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] [2021-11-03 05:31:19,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-03 05:31:19,507 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:31:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1250746154, now seen corresponding path program 1 times [2021-11-03 05:31:19,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:19,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660267491] [2021-11-03 05:31:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:19,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:19,608 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 05:31:19,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:31:19,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660267491] [2021-11-03 05:31:19,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660267491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:19,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:19,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:31:19,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869114864] [2021-11-03 05:31:19,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:31:19,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:31:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:31:19,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:31:19,609 INFO L87 Difference]: Start difference. First operand 2500 states and 3388 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:24,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:24,949 INFO L93 Difference]: Finished difference Result 4071 states and 5483 transitions. [2021-11-03 05:31:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:31:24,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:31:24,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:24,952 INFO L225 Difference]: With dead ends: 4071 [2021-11-03 05:31:24,952 INFO L226 Difference]: Without dead ends: 3931 [2021-11-03 05:31:24,953 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 05:31:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-03 05:31:25,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2500. [2021-11-03 05:31:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2463 states have (on average 1.3747462444173773) internal successors, (3386), 2499 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3386 transitions. [2021-11-03 05:31:25,927 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3386 transitions. Word has length 132 [2021-11-03 05:31:25,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:25,927 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 3386 transitions. [2021-11-03 05:31:25,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3386 transitions. [2021-11-03 05:31:25,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:31:25,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:25,929 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] [2021-11-03 05:31:25,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-03 05:31:25,930 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:31:25,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:25,930 INFO L85 PathProgramCache]: Analyzing trace with hash 654746558, now seen corresponding path program 1 times [2021-11-03 05:31:25,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:25,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294656741] [2021-11-03 05:31:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:25,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:26,088 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 05:31:26,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:31:26,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294656741] [2021-11-03 05:31:26,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294656741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:26,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:26,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:31:26,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867418270] [2021-11-03 05:31:26,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:31:26,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:31:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:31:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:31:26,089 INFO L87 Difference]: Start difference. First operand 2500 states and 3386 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:34,835 INFO L93 Difference]: Finished difference Result 5002 states and 6736 transitions. [2021-11-03 05:31:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:31:34,836 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:31:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:34,839 INFO L225 Difference]: With dead ends: 5002 [2021-11-03 05:31:34,839 INFO L226 Difference]: Without dead ends: 4822 [2021-11-03 05:31:34,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:31:34,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-11-03 05:31:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 2508. [2021-11-03 05:31:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2471 states have (on average 1.3735329825981384) internal successors, (3394), 2507 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:35,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3394 transitions. [2021-11-03 05:31:35,823 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3394 transitions. Word has length 132 [2021-11-03 05:31:35,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:35,823 INFO L470 AbstractCegarLoop]: Abstraction has 2508 states and 3394 transitions. [2021-11-03 05:31:35,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:35,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3394 transitions. [2021-11-03 05:31:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:31:35,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:35,825 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] [2021-11-03 05:31:35,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-03 05:31:35,826 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:31:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2138065064, now seen corresponding path program 1 times [2021-11-03 05:31:35,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:35,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58679975] [2021-11-03 05:31:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:35,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:35,921 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 05:31:35,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:31:35,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58679975] [2021-11-03 05:31:35,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58679975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:35,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:35,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:31:35,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742082296] [2021-11-03 05:31:35,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:31:35,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:31:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:31:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:31:35,922 INFO L87 Difference]: Start difference. First operand 2508 states and 3394 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:40,917 INFO L93 Difference]: Finished difference Result 4085 states and 5496 transitions. [2021-11-03 05:31:40,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:31:40,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:31:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:40,921 INFO L225 Difference]: With dead ends: 4085 [2021-11-03 05:31:40,921 INFO L226 Difference]: Without dead ends: 3939 [2021-11-03 05:31:40,922 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 05:31:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-11-03 05:31:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 2508. [2021-11-03 05:31:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2471 states have (on average 1.3727235936867666) internal successors, (3392), 2507 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3392 transitions. [2021-11-03 05:31:41,899 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3392 transitions. Word has length 132 [2021-11-03 05:31:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:41,899 INFO L470 AbstractCegarLoop]: Abstraction has 2508 states and 3392 transitions. [2021-11-03 05:31:41,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3392 transitions. [2021-11-03 05:31:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:31:41,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:41,901 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] [2021-11-03 05:31:41,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-03 05:31:41,901 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:31:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1120799510, now seen corresponding path program 1 times [2021-11-03 05:31:41,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:41,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710241192] [2021-11-03 05:31:41,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:41,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:42,064 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 05:31:42,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:31:42,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710241192] [2021-11-03 05:31:42,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710241192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:42,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:42,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:31:42,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662921971] [2021-11-03 05:31:42,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:31:42,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:31:42,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:31:42,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:31:42,065 INFO L87 Difference]: Start difference. First operand 2508 states and 3392 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:50,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:50,877 INFO L93 Difference]: Finished difference Result 5298 states and 7127 transitions. [2021-11-03 05:31:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:31:50,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:31:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:50,881 INFO L225 Difference]: With dead ends: 5298 [2021-11-03 05:31:50,881 INFO L226 Difference]: Without dead ends: 5044 [2021-11-03 05:31:50,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:31:50,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5044 states. [2021-11-03 05:31:51,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5044 to 2516. [2021-11-03 05:31:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2479 states have (on average 1.371520774505849) internal successors, (3400), 2515 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3400 transitions. [2021-11-03 05:31:51,886 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3400 transitions. Word has length 132 [2021-11-03 05:31:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:51,886 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3400 transitions. [2021-11-03 05:31:51,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3400 transitions. [2021-11-03 05:31:51,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:31:51,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:51,888 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] [2021-11-03 05:31:51,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-03 05:31:51,888 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:31:51,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:51,889 INFO L85 PathProgramCache]: Analyzing trace with hash 977491267, now seen corresponding path program 1 times [2021-11-03 05:31:51,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:51,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843755050] [2021-11-03 05:31:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:51,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:51,986 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 05:31:51,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:31:51,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843755050] [2021-11-03 05:31:51,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843755050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:51,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:51,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:31:51,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741724683] [2021-11-03 05:31:51,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:31:51,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:31:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:31:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:31:51,988 INFO L87 Difference]: Start difference. First operand 2516 states and 3400 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:57,133 INFO L93 Difference]: Finished difference Result 4216 states and 5689 transitions. [2021-11-03 05:31:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:31:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:31:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:57,136 INFO L225 Difference]: With dead ends: 4216 [2021-11-03 05:31:57,136 INFO L226 Difference]: Without dead ends: 4044 [2021-11-03 05:31:57,137 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 05:31:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-11-03 05:31:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2516. [2021-11-03 05:31:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2479 states have (on average 1.3707139975796692) internal successors, (3398), 2515 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3398 transitions. [2021-11-03 05:31:58,136 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3398 transitions. Word has length 132 [2021-11-03 05:31:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:58,136 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3398 transitions. [2021-11-03 05:31:58,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3398 transitions. [2021-11-03 05:31:58,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:31:58,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:58,138 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] [2021-11-03 05:31:58,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-03 05:31:58,139 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:31:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2126550025, now seen corresponding path program 1 times [2021-11-03 05:31:58,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:58,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317707205] [2021-11-03 05:31:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:58,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:58,249 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 05:31:58,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:31:58,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317707205] [2021-11-03 05:31:58,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317707205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:58,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:58,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:31:58,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745417800] [2021-11-03 05:31:58,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:31:58,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:31:58,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:31:58,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:31:58,250 INFO L87 Difference]: Start difference. First operand 2516 states and 3398 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:03,709 INFO L93 Difference]: Finished difference Result 4087 states and 5493 transitions. [2021-11-03 05:32:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:32:03,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:32:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:03,712 INFO L225 Difference]: With dead ends: 4087 [2021-11-03 05:32:03,713 INFO L226 Difference]: Without dead ends: 3947 [2021-11-03 05:32:03,713 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 05:32:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3947 states. [2021-11-03 05:32:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3947 to 2516. [2021-11-03 05:32:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2479 states have (on average 1.3699072206534892) internal successors, (3396), 2515 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3396 transitions. [2021-11-03 05:32:04,720 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3396 transitions. Word has length 132 [2021-11-03 05:32:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:04,720 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3396 transitions. [2021-11-03 05:32:04,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3396 transitions. [2021-11-03 05:32:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:32:04,722 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:04,722 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] [2021-11-03 05:32:04,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-03 05:32:04,723 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:32:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash 382454442, now seen corresponding path program 1 times [2021-11-03 05:32:04,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:32:04,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138377619] [2021-11-03 05:32:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:04,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:32:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:04,888 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 05:32:04,888 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:32:04,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138377619] [2021-11-03 05:32:04,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138377619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:04,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:04,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:32:04,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727211004] [2021-11-03 05:32:04,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:32:04,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:32:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:32:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:32:04,892 INFO L87 Difference]: Start difference. First operand 2516 states and 3396 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:13,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:13,775 INFO L93 Difference]: Finished difference Result 5266 states and 7081 transitions. [2021-11-03 05:32:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:32:13,776 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:32:13,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:13,780 INFO L225 Difference]: With dead ends: 5266 [2021-11-03 05:32:13,780 INFO L226 Difference]: Without dead ends: 5028 [2021-11-03 05:32:13,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:32:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2021-11-03 05:32:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 2524. [2021-11-03 05:32:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2487 states have (on average 1.3687173301166065) internal successors, (3404), 2523 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3404 transitions. [2021-11-03 05:32:14,829 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3404 transitions. Word has length 132 [2021-11-03 05:32:14,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:14,829 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 3404 transitions. [2021-11-03 05:32:14,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:14,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3404 transitions. [2021-11-03 05:32:14,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:32:14,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:14,831 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] [2021-11-03 05:32:14,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-03 05:32:14,831 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:32:14,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:14,832 INFO L85 PathProgramCache]: Analyzing trace with hash 867335140, now seen corresponding path program 1 times [2021-11-03 05:32:14,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:32:14,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225597713] [2021-11-03 05:32:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:14,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:32:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:14,928 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 05:32:14,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:32:14,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225597713] [2021-11-03 05:32:14,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225597713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:14,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:14,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:32:14,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182208932] [2021-11-03 05:32:14,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:32:14,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:32:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:32:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:32:14,929 INFO L87 Difference]: Start difference. First operand 2524 states and 3404 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:20,169 INFO L93 Difference]: Finished difference Result 4095 states and 5499 transitions. [2021-11-03 05:32:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:32:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:32:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:20,173 INFO L225 Difference]: With dead ends: 4095 [2021-11-03 05:32:20,174 INFO L226 Difference]: Without dead ends: 3955 [2021-11-03 05:32:20,174 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 05:32:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-11-03 05:32:21,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 2524. [2021-11-03 05:32:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2487 states have (on average 1.3679131483715319) internal successors, (3402), 2523 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3402 transitions. [2021-11-03 05:32:21,214 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3402 transitions. Word has length 132 [2021-11-03 05:32:21,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:21,214 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 3402 transitions. [2021-11-03 05:32:21,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3402 transitions. [2021-11-03 05:32:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:32:21,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:21,216 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] [2021-11-03 05:32:21,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-03 05:32:21,217 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:32:21,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:21,217 INFO L85 PathProgramCache]: Analyzing trace with hash -899790224, now seen corresponding path program 1 times [2021-11-03 05:32:21,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:32:21,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736131612] [2021-11-03 05:32:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:21,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:32:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:21,322 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 05:32:21,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:32:21,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736131612] [2021-11-03 05:32:21,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736131612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:21,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:21,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:32:21,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417936339] [2021-11-03 05:32:21,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:32:21,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:32:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:32:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:32:21,324 INFO L87 Difference]: Start difference. First operand 2524 states and 3402 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:26,831 INFO L93 Difference]: Finished difference Result 4083 states and 5477 transitions. [2021-11-03 05:32:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:32:26,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:32:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:26,834 INFO L225 Difference]: With dead ends: 4083 [2021-11-03 05:32:26,834 INFO L226 Difference]: Without dead ends: 3955 [2021-11-03 05:32:26,835 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 05:32:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-11-03 05:32:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 2524. [2021-11-03 05:32:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2487 states have (on average 1.3671089666264575) internal successors, (3400), 2523 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3400 transitions. [2021-11-03 05:32:27,837 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3400 transitions. Word has length 132 [2021-11-03 05:32:27,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:27,837 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 3400 transitions. [2021-11-03 05:32:27,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3400 transitions. [2021-11-03 05:32:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:32:27,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:27,840 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] [2021-11-03 05:32:27,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-03 05:32:27,840 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:32:27,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:27,840 INFO L85 PathProgramCache]: Analyzing trace with hash 666451680, now seen corresponding path program 1 times [2021-11-03 05:32:27,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:32:27,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174711617] [2021-11-03 05:32:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:27,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:32:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:27,933 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 05:32:27,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:32:27,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174711617] [2021-11-03 05:32:27,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174711617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:27,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:27,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:32:27,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24284426] [2021-11-03 05:32:27,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:32:27,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:32:27,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:32:27,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:32:27,934 INFO L87 Difference]: Start difference. First operand 2524 states and 3400 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:33,129 INFO L93 Difference]: Finished difference Result 4095 states and 5493 transitions. [2021-11-03 05:32:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:32:33,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:32:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:33,132 INFO L225 Difference]: With dead ends: 4095 [2021-11-03 05:32:33,132 INFO L226 Difference]: Without dead ends: 3955 [2021-11-03 05:32:33,133 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 05:32:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-11-03 05:32:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 2524. [2021-11-03 05:32:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2487 states have (on average 1.3663047848813832) internal successors, (3398), 2523 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:34,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3398 transitions. [2021-11-03 05:32:34,177 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3398 transitions. Word has length 132 [2021-11-03 05:32:34,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:34,178 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 3398 transitions. [2021-11-03 05:32:34,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:34,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3398 transitions. [2021-11-03 05:32:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:32:34,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:34,180 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] [2021-11-03 05:32:34,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-03 05:32:34,180 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:32:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:34,180 INFO L85 PathProgramCache]: Analyzing trace with hash 30407110, now seen corresponding path program 1 times [2021-11-03 05:32:34,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:32:34,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100196035] [2021-11-03 05:32:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:34,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:32:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:34,345 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 05:32:34,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:32:34,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100196035] [2021-11-03 05:32:34,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100196035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:34,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:34,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:32:34,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236570332] [2021-11-03 05:32:34,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:32:34,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:32:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:32:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:32:34,347 INFO L87 Difference]: Start difference. First operand 2524 states and 3398 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:42,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:42,882 INFO L93 Difference]: Finished difference Result 4805 states and 6429 transitions. [2021-11-03 05:32:42,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:32:42,883 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:32:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:42,886 INFO L225 Difference]: With dead ends: 4805 [2021-11-03 05:32:42,886 INFO L226 Difference]: Without dead ends: 4659 [2021-11-03 05:32:42,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:32:42,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2021-11-03 05:32:43,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 2532. [2021-11-03 05:32:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2495 states have (on average 1.365130260521042) internal successors, (3406), 2531 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3406 transitions. [2021-11-03 05:32:43,943 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3406 transitions. Word has length 132 [2021-11-03 05:32:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:43,943 INFO L470 AbstractCegarLoop]: Abstraction has 2532 states and 3406 transitions. [2021-11-03 05:32:43,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3406 transitions. [2021-11-03 05:32:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:32:43,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:43,945 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] [2021-11-03 05:32:43,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-03 05:32:43,946 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:32:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:43,946 INFO L85 PathProgramCache]: Analyzing trace with hash 248526430, now seen corresponding path program 1 times [2021-11-03 05:32:43,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:32:43,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466675780] [2021-11-03 05:32:43,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:43,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:32:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:44,104 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 05:32:44,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:32:44,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466675780] [2021-11-03 05:32:44,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466675780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:44,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:44,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:32:44,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423068162] [2021-11-03 05:32:44,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:32:44,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:32:44,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:32:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:32:44,108 INFO L87 Difference]: Start difference. First operand 2532 states and 3406 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:52,786 INFO L93 Difference]: Finished difference Result 5008 states and 6712 transitions. [2021-11-03 05:32:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:32:52,786 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:32:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:52,790 INFO L225 Difference]: With dead ends: 5008 [2021-11-03 05:32:52,790 INFO L226 Difference]: Without dead ends: 4840 [2021-11-03 05:32:52,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:32:52,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2021-11-03 05:32:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 2540. [2021-11-03 05:32:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2503 states have (on average 1.3639632441070715) internal successors, (3414), 2539 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3414 transitions. [2021-11-03 05:32:53,864 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3414 transitions. Word has length 132 [2021-11-03 05:32:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:53,864 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 3414 transitions. [2021-11-03 05:32:53,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3414 transitions. [2021-11-03 05:32:53,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:32:53,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:53,866 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] [2021-11-03 05:32:53,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-03 05:32:53,866 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:32:53,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:53,867 INFO L85 PathProgramCache]: Analyzing trace with hash -160318798, now seen corresponding path program 1 times [2021-11-03 05:32:53,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:32:53,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113385717] [2021-11-03 05:32:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:53,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:32:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:53,969 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 05:32:53,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:32:53,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113385717] [2021-11-03 05:32:53,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113385717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:53,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:53,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:32:53,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359260900] [2021-11-03 05:32:53,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:32:53,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:32:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:32:53,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:32:53,970 INFO L87 Difference]: Start difference. First operand 2540 states and 3414 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:59,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:59,554 INFO L93 Difference]: Finished difference Result 4105 states and 5498 transitions. [2021-11-03 05:32:59,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:32:59,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:32:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:59,558 INFO L225 Difference]: With dead ends: 4105 [2021-11-03 05:32:59,558 INFO L226 Difference]: Without dead ends: 3963 [2021-11-03 05:32:59,559 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 05:32:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2021-11-03 05:33:00,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 2540. [2021-11-03 05:33:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2503 states have (on average 1.3631642029564524) internal successors, (3412), 2539 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3412 transitions. [2021-11-03 05:33:00,628 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3412 transitions. Word has length 132 [2021-11-03 05:33:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:00,628 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 3412 transitions. [2021-11-03 05:33:00,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3412 transitions. [2021-11-03 05:33:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:33:00,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:00,631 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] [2021-11-03 05:33:00,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-03 05:33:00,631 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:33:00,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash 207783377, now seen corresponding path program 1 times [2021-11-03 05:33:00,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:33:00,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036575964] [2021-11-03 05:33:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:00,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:33:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:00,727 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 05:33:00,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:33:00,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036575964] [2021-11-03 05:33:00,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036575964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:00,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:00,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:33:00,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359159041] [2021-11-03 05:33:00,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:33:00,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:33:00,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:33:00,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:33:00,729 INFO L87 Difference]: Start difference. First operand 2540 states and 3412 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:06,067 INFO L93 Difference]: Finished difference Result 4105 states and 5496 transitions. [2021-11-03 05:33:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:33:06,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:33:06,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:06,070 INFO L225 Difference]: With dead ends: 4105 [2021-11-03 05:33:06,070 INFO L226 Difference]: Without dead ends: 3963 [2021-11-03 05:33:06,071 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 05:33:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2021-11-03 05:33:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 2540. [2021-11-03 05:33:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2503 states have (on average 1.362365161805833) internal successors, (3410), 2539 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3410 transitions. [2021-11-03 05:33:07,116 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3410 transitions. Word has length 132 [2021-11-03 05:33:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:07,116 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 3410 transitions. [2021-11-03 05:33:07,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3410 transitions. [2021-11-03 05:33:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:33:07,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:07,118 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] [2021-11-03 05:33:07,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-03 05:33:07,118 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:33:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash 843153700, now seen corresponding path program 1 times [2021-11-03 05:33:07,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:33:07,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462303860] [2021-11-03 05:33:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:07,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:33:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:07,264 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 05:33:07,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:33:07,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462303860] [2021-11-03 05:33:07,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462303860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:07,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:07,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:33:07,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835804316] [2021-11-03 05:33:07,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:33:07,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:33:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:33:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:33:07,267 INFO L87 Difference]: Start difference. First operand 2540 states and 3410 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:12,540 INFO L93 Difference]: Finished difference Result 4103 states and 5491 transitions. [2021-11-03 05:33:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:33:12,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:33:12,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:12,543 INFO L225 Difference]: With dead ends: 4103 [2021-11-03 05:33:12,543 INFO L226 Difference]: Without dead ends: 3963 [2021-11-03 05:33:12,544 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 05:33:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2021-11-03 05:33:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 2540. [2021-11-03 05:33:13,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2503 states have (on average 1.3615661206552137) internal successors, (3408), 2539 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3408 transitions. [2021-11-03 05:33:13,627 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3408 transitions. Word has length 132 [2021-11-03 05:33:13,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:13,627 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 3408 transitions. [2021-11-03 05:33:13,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3408 transitions. [2021-11-03 05:33:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:33:13,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:13,629 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] [2021-11-03 05:33:13,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-11-03 05:33:13,629 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:33:13,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash -616944645, now seen corresponding path program 1 times [2021-11-03 05:33:13,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:33:13,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774600161] [2021-11-03 05:33:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:13,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:33:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:13,733 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 05:33:13,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:33:13,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774600161] [2021-11-03 05:33:13,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774600161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:13,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:13,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:33:13,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241487832] [2021-11-03 05:33:13,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:33:13,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:33:13,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:33:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:33:13,735 INFO L87 Difference]: Start difference. First operand 2540 states and 3408 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:19,046 INFO L93 Difference]: Finished difference Result 4103 states and 5489 transitions. [2021-11-03 05:33:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:33:19,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-03 05:33:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:19,049 INFO L225 Difference]: With dead ends: 4103 [2021-11-03 05:33:19,050 INFO L226 Difference]: Without dead ends: 3963 [2021-11-03 05:33:19,050 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 05:33:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2021-11-03 05:33:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 2540. [2021-11-03 05:33:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2503 states have (on average 1.3607670795045945) internal successors, (3406), 2539 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3406 transitions. [2021-11-03 05:33:20,105 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3406 transitions. Word has length 132 [2021-11-03 05:33:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:20,105 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 3406 transitions. [2021-11-03 05:33:20,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3406 transitions. [2021-11-03 05:33:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:33:20,107 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:20,108 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] [2021-11-03 05:33:20,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-03 05:33:20,108 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-03 05:33:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1252097501, now seen corresponding path program 1 times [2021-11-03 05:33:20,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:33:20,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97379677] [2021-11-03 05:33:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:20,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:33:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:20,205 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 05:33:20,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:33:20,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97379677] [2021-11-03 05:33:20,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97379677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:20,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:20,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:33:20,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645485693] [2021-11-03 05:33:20,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:33:20,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:33:20,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:33:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:33:20,207 INFO L87 Difference]: Start difference. First operand 2540 states and 3406 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)