./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.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_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/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_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/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_4657612d-c6a5-4786-b238-4b7f2b811469/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 1bc6aa00437fa9caa5f3417d996588d430ef5fa0daab57def01c3e44b34b1cac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:15:21,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:15:21,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:15:21,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:15:21,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:15:21,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:15:21,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:15:21,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:15:21,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:15:21,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:15:21,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:15:21,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:15:21,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:15:21,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:15:21,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:15:21,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:15:21,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:15:21,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:15:21,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:15:21,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:15:21,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:15:21,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:15:21,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:15:21,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:15:21,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:15:21,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:15:21,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:15:21,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:15:21,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:15:21,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:15:21,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:15:21,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:15:21,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:15:21,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:15:21,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:15:21,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:15:21,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:15:21,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:15:21,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:15:21,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:15:21,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:15:21,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:15:21,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:15:21,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:15:21,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:15:21,456 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:15:21,457 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:15:21,457 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:15:21,457 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:15:21,457 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:15:21,457 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:15:21,458 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:15:21,458 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:15:21,458 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:15:21,458 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:15:21,459 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:15:21,459 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:15:21,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:15:21,460 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:15:21,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:15:21,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:15:21,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:15:21,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:15:21,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:15:21,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:15:21,462 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:15:21,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:15:21,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:15:21,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:15:21,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:15:21,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:15:21,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:15:21,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:15:21,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:15:21,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:15:21,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:15:21,464 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:15:21,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:15:21,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:15:21,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:15:21,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:15:21,465 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_4657612d-c6a5-4786-b238-4b7f2b811469/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bc6aa00437fa9caa5f3417d996588d430ef5fa0daab57def01c3e44b34b1cac [2021-11-03 05:15:21,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:15:21,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:15:21,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:15:21,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:15:21,792 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:15:21,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-03 05:15:21,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/data/66c1d7888/24336be8bd7e46fb874f973536048c29/FLAG6439858eb [2021-11-03 05:15:22,423 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:15:22,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-03 05:15:22,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/data/66c1d7888/24336be8bd7e46fb874f973536048c29/FLAG6439858eb [2021-11-03 05:15:22,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/data/66c1d7888/24336be8bd7e46fb874f973536048c29 [2021-11-03 05:15:22,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:15:22,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:15:22,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:15:22,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:15:22,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:15:22,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:15:22" (1/1) ... [2021-11-03 05:15:22,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fa9c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:22, skipping insertion in model container [2021-11-03 05:15:22,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:15:22" (1/1) ... [2021-11-03 05:15:22,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:15:22,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:15:23,185 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_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14164,14177] [2021-11-03 05:15:23,197 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_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14811,14824] [2021-11-03 05:15:23,229 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_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16044,16057] [2021-11-03 05:15:23,243 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_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17104,17117] [2021-11-03 05:15:23,314 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_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25495,25508] [2021-11-03 05:15:23,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:15:23,405 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:15:23,566 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_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14164,14177] [2021-11-03 05:15:23,582 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_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14811,14824] [2021-11-03 05:15:23,608 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_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16044,16057] [2021-11-03 05:15:23,631 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17104,17117] [2021-11-03 05:15:23,761 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_4657612d-c6a5-4786-b238-4b7f2b811469/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25495,25508] [2021-11-03 05:15:23,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:15:23,881 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:15:23,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23 WrapperNode [2021-11-03 05:15:23,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:15:23,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:15:23,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:15:23,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:15:23,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:23,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:23,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:15:23,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:15:23,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:15:23,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:15:23,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:23,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:24,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:24,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:24,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:24,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:24,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:24,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:15:24,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:15:24,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:15:24,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:15:24,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (1/1) ... [2021-11-03 05:15:24,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:15:24,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:15:24,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:15:24,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4657612d-c6a5-4786-b238-4b7f2b811469/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:15:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:15:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:15:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:15:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:15:26,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:15:26,613 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:15:26,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:15:26 BoogieIcfgContainer [2021-11-03 05:15:26,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:15:26,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:15:26,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:15:26,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:15:26,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:15:22" (1/3) ... [2021-11-03 05:15:26,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424d5314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:15:26, skipping insertion in model container [2021-11-03 05:15:26,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:23" (2/3) ... [2021-11-03 05:15:26,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424d5314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:15:26, skipping insertion in model container [2021-11-03 05:15:26,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:15:26" (3/3) ... [2021-11-03 05:15:26,629 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-03 05:15:26,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:15:26,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 05:15:26,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:15:26,709 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 05:15:26,710 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 05:15:26,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 280 states have (on average 1.7964285714285715) internal successors, (503), 285 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 05:15:26,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:26,759 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:15:26,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash 693386370, now seen corresponding path program 1 times [2021-11-03 05:15:26,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:26,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871550250] [2021-11-03 05:15:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:26,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:27,709 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 05:15:27,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:27,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871550250] [2021-11-03 05:15:27,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871550250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:27,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:27,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 05:15:27,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642646704] [2021-11-03 05:15:27,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:15:27,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:15:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:15:27,741 INFO L87 Difference]: Start difference. First operand has 286 states, 280 states have (on average 1.7964285714285715) internal successors, (503), 285 states have internal predecessors, (503), 0 states have call successors, (0), 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 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:28,061 INFO L93 Difference]: Finished difference Result 794 states and 1367 transitions. [2021-11-03 05:15:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:15:28,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 05:15:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:28,090 INFO L225 Difference]: With dead ends: 794 [2021-11-03 05:15:28,090 INFO L226 Difference]: Without dead ends: 602 [2021-11-03 05:15:28,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:15:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-03 05:15:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 561. [2021-11-03 05:15:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 556 states have (on average 1.3758992805755397) internal successors, (765), 560 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 765 transitions. [2021-11-03 05:15:28,221 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 765 transitions. Word has length 114 [2021-11-03 05:15:28,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:28,222 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 765 transitions. [2021-11-03 05:15:28,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 765 transitions. [2021-11-03 05:15:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 05:15:28,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:28,226 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:15:28,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:15:28,227 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:28,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:28,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1420466989, now seen corresponding path program 1 times [2021-11-03 05:15:28,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:28,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851384105] [2021-11-03 05:15:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:28,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:28,597 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 05:15:28,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:28,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851384105] [2021-11-03 05:15:28,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851384105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:28,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:28,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:15:28,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277089905] [2021-11-03 05:15:28,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:15:28,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:28,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:15:28,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:15:28,602 INFO L87 Difference]: Start difference. First operand 561 states and 765 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:28,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:28,729 INFO L93 Difference]: Finished difference Result 1499 states and 2053 transitions. [2021-11-03 05:15:28,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:15:28,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 05:15:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:28,743 INFO L225 Difference]: With dead ends: 1499 [2021-11-03 05:15:28,743 INFO L226 Difference]: Without dead ends: 1027 [2021-11-03 05:15:28,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:15:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2021-11-03 05:15:28,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1003. [2021-11-03 05:15:28,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 998 states have (on average 1.3787575150300602) internal successors, (1376), 1002 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1376 transitions. [2021-11-03 05:15:28,826 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1376 transitions. Word has length 114 [2021-11-03 05:15:28,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:28,827 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1376 transitions. [2021-11-03 05:15:28,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1376 transitions. [2021-11-03 05:15:28,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-03 05:15:28,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:28,841 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 05:15:28,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:15:28,842 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:28,843 INFO L85 PathProgramCache]: Analyzing trace with hash 603354539, now seen corresponding path program 1 times [2021-11-03 05:15:28,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:28,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928553511] [2021-11-03 05:15:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:28,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:28,945 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 05:15:28,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:28,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928553511] [2021-11-03 05:15:28,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928553511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:28,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:28,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:15:28,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354803533] [2021-11-03 05:15:28,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:15:28,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:15:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:15:28,957 INFO L87 Difference]: Start difference. First operand 1003 states and 1376 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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 05:15:29,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:29,096 INFO L93 Difference]: Finished difference Result 1827 states and 2515 transitions. [2021-11-03 05:15:29,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:15:29,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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 05:15:29,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:29,107 INFO L225 Difference]: With dead ends: 1827 [2021-11-03 05:15:29,107 INFO L226 Difference]: Without dead ends: 1459 [2021-11-03 05:15:29,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:15:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-11-03 05:15:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1435. [2021-11-03 05:15:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1430 states have (on average 1.3727272727272728) internal successors, (1963), 1434 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1963 transitions. [2021-11-03 05:15:29,214 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1963 transitions. Word has length 120 [2021-11-03 05:15:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:29,214 INFO L470 AbstractCegarLoop]: Abstraction has 1435 states and 1963 transitions. [2021-11-03 05:15:29,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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 05:15:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1963 transitions. [2021-11-03 05:15:29,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-03 05:15:29,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:29,218 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 05:15:29,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 05:15:29,219 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash 34767230, now seen corresponding path program 1 times [2021-11-03 05:15:29,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:29,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660209421] [2021-11-03 05:15:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:29,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:29,427 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 05:15:29,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:29,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660209421] [2021-11-03 05:15:29,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660209421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:29,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:29,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 05:15:29,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41317840] [2021-11-03 05:15:29,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:15:29,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:15:29,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:15:29,431 INFO L87 Difference]: Start difference. First operand 1435 states and 1963 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 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 05:15:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:30,198 INFO L93 Difference]: Finished difference Result 4131 states and 5692 transitions. [2021-11-03 05:15:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:15:30,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 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 05:15:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:30,217 INFO L225 Difference]: With dead ends: 4131 [2021-11-03 05:15:30,217 INFO L226 Difference]: Without dead ends: 2761 [2021-11-03 05:15:30,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:15:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-11-03 05:15:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1861. [2021-11-03 05:15:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1856 states have (on average 1.2726293103448276) internal successors, (2362), 1860 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2362 transitions. [2021-11-03 05:15:30,412 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2362 transitions. Word has length 120 [2021-11-03 05:15:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:30,413 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 2362 transitions. [2021-11-03 05:15:30,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 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 05:15:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2362 transitions. [2021-11-03 05:15:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-03 05:15:30,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:30,417 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 05:15:30,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 05:15:30,417 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1771327293, now seen corresponding path program 1 times [2021-11-03 05:15:30,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:30,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37790042] [2021-11-03 05:15:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:30,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:30,661 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 05:15:30,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:30,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37790042] [2021-11-03 05:15:30,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37790042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:30,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:30,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:15:30,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507262545] [2021-11-03 05:15:30,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:15:30,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:30,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:15:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:15:30,665 INFO L87 Difference]: Start difference. First operand 1861 states and 2362 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 05:15:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:30,898 INFO L93 Difference]: Finished difference Result 3435 states and 4449 transitions. [2021-11-03 05:15:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:15:30,899 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 05:15:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:30,911 INFO L225 Difference]: With dead ends: 3435 [2021-11-03 05:15:30,912 INFO L226 Difference]: Without dead ends: 2198 [2021-11-03 05:15:30,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:15:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2021-11-03 05:15:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2177. [2021-11-03 05:15:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2172 states have (on average 1.287292817679558) internal successors, (2796), 2176 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 2796 transitions. [2021-11-03 05:15:31,111 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 2796 transitions. Word has length 120 [2021-11-03 05:15:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:31,112 INFO L470 AbstractCegarLoop]: Abstraction has 2177 states and 2796 transitions. [2021-11-03 05:15:31,112 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 05:15:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 2796 transitions. [2021-11-03 05:15:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-03 05:15:31,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:31,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:15:31,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 05:15:31,116 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:31,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:31,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1956519791, now seen corresponding path program 1 times [2021-11-03 05:15:31,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:31,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962515571] [2021-11-03 05:15:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:31,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:15:31,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:31,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962515571] [2021-11-03 05:15:31,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962515571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:31,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:31,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 05:15:31,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542058525] [2021-11-03 05:15:31,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:15:31,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:15:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:15:31,413 INFO L87 Difference]: Start difference. First operand 2177 states and 2796 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 5 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 05:15:31,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:31,710 INFO L93 Difference]: Finished difference Result 2221 states and 2831 transitions. [2021-11-03 05:15:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:15:31,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 5 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 05:15:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:31,721 INFO L225 Difference]: With dead ends: 2221 [2021-11-03 05:15:31,722 INFO L226 Difference]: Without dead ends: 1809 [2021-11-03 05:15:31,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:15:31,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2021-11-03 05:15:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1646. [2021-11-03 05:15:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1641 states have (on average 1.2803168799512492) internal successors, (2101), 1645 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2101 transitions. [2021-11-03 05:15:31,880 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2101 transitions. Word has length 120 [2021-11-03 05:15:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:31,880 INFO L470 AbstractCegarLoop]: Abstraction has 1646 states and 2101 transitions. [2021-11-03 05:15:31,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 5 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 05:15:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2101 transitions. [2021-11-03 05:15:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:15:31,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:31,884 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 05:15:31,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 05:15:31,885 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1134798561, now seen corresponding path program 1 times [2021-11-03 05:15:31,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:31,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230188992] [2021-11-03 05:15:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:31,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:32,107 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 05:15:32,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:32,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230188992] [2021-11-03 05:15:32,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230188992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:32,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:32,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:15:32,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979463906] [2021-11-03 05:15:32,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:15:32,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:32,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:15:32,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:15:32,113 INFO L87 Difference]: Start difference. First operand 1646 states and 2101 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 05:15:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:33,451 INFO L93 Difference]: Finished difference Result 8816 states and 11287 transitions. [2021-11-03 05:15:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:15:33,452 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 05:15:33,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:33,492 INFO L225 Difference]: With dead ends: 8816 [2021-11-03 05:15:33,493 INFO L226 Difference]: Without dead ends: 7455 [2021-11-03 05:15:33,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:15:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2021-11-03 05:15:34,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 6665. [2021-11-03 05:15:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6665 states, 6660 states have (on average 1.278978978978979) internal successors, (8518), 6664 states have internal predecessors, (8518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 8518 transitions. [2021-11-03 05:15:34,109 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 8518 transitions. Word has length 126 [2021-11-03 05:15:34,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:34,110 INFO L470 AbstractCegarLoop]: Abstraction has 6665 states and 8518 transitions. [2021-11-03 05:15:34,110 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 05:15:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 8518 transitions. [2021-11-03 05:15:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:15:34,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:34,119 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 05:15:34,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 05:15:34,120 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:34,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1046315376, now seen corresponding path program 1 times [2021-11-03 05:15:34,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:34,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45172371] [2021-11-03 05:15:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:34,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:34,275 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 05:15:34,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:34,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45172371] [2021-11-03 05:15:34,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45172371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:34,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:34,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:15:34,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906460988] [2021-11-03 05:15:34,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:15:34,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:34,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:15:34,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:15:34,278 INFO L87 Difference]: Start difference. First operand 6665 states and 8518 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 05:15:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:35,186 INFO L93 Difference]: Finished difference Result 10640 states and 13572 transitions. [2021-11-03 05:15:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:15:35,187 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 05:15:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:35,213 INFO L225 Difference]: With dead ends: 10640 [2021-11-03 05:15:35,213 INFO L226 Difference]: Without dead ends: 4616 [2021-11-03 05:15:35,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:15:35,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2021-11-03 05:15:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4574. [2021-11-03 05:15:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4569 states have (on average 1.2446924928868461) internal successors, (5687), 4573 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 5687 transitions. [2021-11-03 05:15:35,611 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 5687 transitions. Word has length 126 [2021-11-03 05:15:35,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:35,611 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 5687 transitions. [2021-11-03 05:15:35,612 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 05:15:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 5687 transitions. [2021-11-03 05:15:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:15:35,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:35,618 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] [2021-11-03 05:15:35,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 05:15:35,619 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:35,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:35,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1232883972, now seen corresponding path program 1 times [2021-11-03 05:15:35,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:35,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121069899] [2021-11-03 05:15:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:35,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:35,855 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 05:15:35,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:35,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121069899] [2021-11-03 05:15:35,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121069899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:35,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:35,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:15:35,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980063036] [2021-11-03 05:15:35,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:15:35,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:35,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:15:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:15:35,866 INFO L87 Difference]: Start difference. First operand 4574 states and 5687 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 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 05:15:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:36,267 INFO L93 Difference]: Finished difference Result 5951 states and 7451 transitions. [2021-11-03 05:15:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:15:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 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 05:15:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:36,288 INFO L225 Difference]: With dead ends: 5951 [2021-11-03 05:15:36,288 INFO L226 Difference]: Without dead ends: 3497 [2021-11-03 05:15:36,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:15:36,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2021-11-03 05:15:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3476. [2021-11-03 05:15:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3471 states have (on average 1.2422932872371075) internal successors, (4312), 3475 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 4312 transitions. [2021-11-03 05:15:36,639 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 4312 transitions. Word has length 126 [2021-11-03 05:15:36,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:36,639 INFO L470 AbstractCegarLoop]: Abstraction has 3476 states and 4312 transitions. [2021-11-03 05:15:36,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 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 05:15:36,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 4312 transitions. [2021-11-03 05:15:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:15:36,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:36,644 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 05:15:36,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 05:15:36,645 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:36,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:36,646 INFO L85 PathProgramCache]: Analyzing trace with hash 464282717, now seen corresponding path program 1 times [2021-11-03 05:15:36,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:36,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373999503] [2021-11-03 05:15:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:36,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:15:36,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:36,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373999503] [2021-11-03 05:15:36,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373999503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:36,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:36,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 05:15:36,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207974723] [2021-11-03 05:15:36,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:15:36,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:36,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:15:36,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:15:36,819 INFO L87 Difference]: Start difference. First operand 3476 states and 4312 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 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 05:15:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:37,496 INFO L93 Difference]: Finished difference Result 6935 states and 8598 transitions. [2021-11-03 05:15:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:15:37,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 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 05:15:37,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:37,523 INFO L225 Difference]: With dead ends: 6935 [2021-11-03 05:15:37,530 INFO L226 Difference]: Without dead ends: 3497 [2021-11-03 05:15:37,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:15:37,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2021-11-03 05:15:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3476. [2021-11-03 05:15:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3471 states have (on average 1.2241428983002016) internal successors, (4249), 3475 states have internal predecessors, (4249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 4249 transitions. [2021-11-03 05:15:37,837 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 4249 transitions. Word has length 126 [2021-11-03 05:15:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:37,837 INFO L470 AbstractCegarLoop]: Abstraction has 3476 states and 4249 transitions. [2021-11-03 05:15:37,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 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 05:15:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 4249 transitions. [2021-11-03 05:15:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 05:15:37,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:37,843 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 05:15:37,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 05:15:37,843 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:37,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1355176002, now seen corresponding path program 1 times [2021-11-03 05:15:37,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:37,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049212346] [2021-11-03 05:15:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:37,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:38,158 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 05:15:38,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:38,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049212346] [2021-11-03 05:15:38,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049212346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:38,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:38,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 05:15:38,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071190115] [2021-11-03 05:15:38,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:15:38,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:38,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:15:38,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:15:38,161 INFO L87 Difference]: Start difference. First operand 3476 states and 4249 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 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 05:15:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:38,671 INFO L93 Difference]: Finished difference Result 5091 states and 6376 transitions. [2021-11-03 05:15:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:15:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 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 05:15:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:38,681 INFO L225 Difference]: With dead ends: 5091 [2021-11-03 05:15:38,681 INFO L226 Difference]: Without dead ends: 4052 [2021-11-03 05:15:38,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:15:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-11-03 05:15:39,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3510. [2021-11-03 05:15:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3505 states have (on average 1.2262482168330955) internal successors, (4298), 3509 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 4298 transitions. [2021-11-03 05:15:39,104 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 4298 transitions. Word has length 126 [2021-11-03 05:15:39,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:39,105 INFO L470 AbstractCegarLoop]: Abstraction has 3510 states and 4298 transitions. [2021-11-03 05:15:39,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 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 05:15:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 4298 transitions. [2021-11-03 05:15:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:15:39,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:39,115 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 05:15:39,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 05:15:39,115 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1652902394, now seen corresponding path program 1 times [2021-11-03 05:15:39,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:39,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168653664] [2021-11-03 05:15:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:39,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:44,343 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 05:15:44,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:44,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168653664] [2021-11-03 05:15:44,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168653664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:44,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:44,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-03 05:15:44,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778718115] [2021-11-03 05:15:44,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-03 05:15:44,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-03 05:15:44,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:15:44,347 INFO L87 Difference]: Start difference. First operand 3510 states and 4298 transitions. Second operand has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 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 05:15:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:15:54,323 INFO L93 Difference]: Finished difference Result 4937 states and 6238 transitions. [2021-11-03 05:15:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-03 05:15:54,324 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 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 05:15:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:15:54,334 INFO L225 Difference]: With dead ends: 4937 [2021-11-03 05:15:54,334 INFO L226 Difference]: Without dead ends: 4654 [2021-11-03 05:15:54,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=559, Invalid=2633, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 05:15:54,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2021-11-03 05:15:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 3639. [2021-11-03 05:15:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3634 states have (on average 1.2220693450742983) internal successors, (4441), 3638 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4441 transitions. [2021-11-03 05:15:54,804 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4441 transitions. Word has length 132 [2021-11-03 05:15:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:15:54,805 INFO L470 AbstractCegarLoop]: Abstraction has 3639 states and 4441 transitions. [2021-11-03 05:15:54,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 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 05:15:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4441 transitions. [2021-11-03 05:15:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:15:54,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:15:54,812 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 05:15:54,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 05:15:54,813 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:15:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:15:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash -460950965, now seen corresponding path program 1 times [2021-11-03 05:15:54,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:15:54,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117420900] [2021-11-03 05:15:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:15:54,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:15:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:15:59,964 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 05:15:59,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:15:59,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117420900] [2021-11-03 05:15:59,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117420900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:15:59,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:15:59,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-03 05:15:59,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794101254] [2021-11-03 05:15:59,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-03 05:15:59,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:15:59,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-03 05:15:59,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2021-11-03 05:15:59,967 INFO L87 Difference]: Start difference. First operand 3639 states and 4441 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 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 05:16:07,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:07,738 INFO L93 Difference]: Finished difference Result 5307 states and 6700 transitions. [2021-11-03 05:16:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-03 05:16:07,739 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 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 05:16:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:07,751 INFO L225 Difference]: With dead ends: 5307 [2021-11-03 05:16:07,751 INFO L226 Difference]: Without dead ends: 5125 [2021-11-03 05:16:07,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=425, Invalid=2331, Unknown=0, NotChecked=0, Total=2756 [2021-11-03 05:16:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2021-11-03 05:16:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 3833. [2021-11-03 05:16:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3828 states have (on average 1.2155172413793103) internal successors, (4653), 3832 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 4653 transitions. [2021-11-03 05:16:08,214 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 4653 transitions. Word has length 132 [2021-11-03 05:16:08,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:08,215 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 4653 transitions. [2021-11-03 05:16:08,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 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 05:16:08,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 4653 transitions. [2021-11-03 05:16:08,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:16:08,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:08,221 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 05:16:08,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 05:16:08,222 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:16:08,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash 183447265, now seen corresponding path program 1 times [2021-11-03 05:16:08,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:16:08,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758047069] [2021-11-03 05:16:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:08,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:14,417 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 05:16:14,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:16:14,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758047069] [2021-11-03 05:16:14,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758047069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:14,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:14,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-03 05:16:14,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611422180] [2021-11-03 05:16:14,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 05:16:14,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:16:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 05:16:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 05:16:14,421 INFO L87 Difference]: Start difference. First operand 3833 states and 4653 transitions. Second operand has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 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 05:16:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:27,388 INFO L93 Difference]: Finished difference Result 5169 states and 6520 transitions. [2021-11-03 05:16:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 05:16:27,389 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 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 05:16:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:27,400 INFO L225 Difference]: With dead ends: 5169 [2021-11-03 05:16:27,400 INFO L226 Difference]: Without dead ends: 5061 [2021-11-03 05:16:27,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=565, Invalid=3595, Unknown=0, NotChecked=0, Total=4160 [2021-11-03 05:16:27,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5061 states. [2021-11-03 05:16:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5061 to 3973. [2021-11-03 05:16:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3973 states, 3968 states have (on average 1.2200100806451613) internal successors, (4841), 3972 states have internal predecessors, (4841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 4841 transitions. [2021-11-03 05:16:27,922 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 4841 transitions. Word has length 132 [2021-11-03 05:16:27,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:27,922 INFO L470 AbstractCegarLoop]: Abstraction has 3973 states and 4841 transitions. [2021-11-03 05:16:27,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 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 05:16:27,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 4841 transitions. [2021-11-03 05:16:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:16:27,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:27,929 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 05:16:27,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 05:16:27,929 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:16:27,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1845818348, now seen corresponding path program 1 times [2021-11-03 05:16:27,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:16:27,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403631630] [2021-11-03 05:16:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:27,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:28,106 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 05:16:28,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:16:28,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403631630] [2021-11-03 05:16:28,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403631630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:28,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:28,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:16:28,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189061958] [2021-11-03 05:16:28,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:16:28,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:16:28,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:16:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:28,112 INFO L87 Difference]: Start difference. First operand 3973 states and 4841 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 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 05:16:28,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:28,654 INFO L93 Difference]: Finished difference Result 6082 states and 7458 transitions. [2021-11-03 05:16:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:16:28,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 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 05:16:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:28,664 INFO L225 Difference]: With dead ends: 6082 [2021-11-03 05:16:28,664 INFO L226 Difference]: Without dead ends: 4397 [2021-11-03 05:16:28,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2021-11-03 05:16:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4376. [2021-11-03 05:16:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4371 states have (on average 1.2136810798444293) internal successors, (5305), 4375 states have internal predecessors, (5305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 5305 transitions. [2021-11-03 05:16:29,300 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 5305 transitions. Word has length 132 [2021-11-03 05:16:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:29,301 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 5305 transitions. [2021-11-03 05:16:29,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 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 05:16:29,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 5305 transitions. [2021-11-03 05:16:29,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:16:29,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:29,308 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:29,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 05:16:29,308 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:16:29,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash -941922722, now seen corresponding path program 1 times [2021-11-03 05:16:29,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:16:29,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483763335] [2021-11-03 05:16:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:29,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:29,501 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 05:16:29,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:16:29,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483763335] [2021-11-03 05:16:29,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483763335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:29,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:29,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:16:29,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076502787] [2021-11-03 05:16:29,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:16:29,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:16:29,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:16:29,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:29,504 INFO L87 Difference]: Start difference. First operand 4376 states and 5305 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 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 05:16:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:29,949 INFO L93 Difference]: Finished difference Result 4418 states and 5339 transitions. [2021-11-03 05:16:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:16:29,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 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 05:16:29,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:29,960 INFO L225 Difference]: With dead ends: 4418 [2021-11-03 05:16:29,960 INFO L226 Difference]: Without dead ends: 4029 [2021-11-03 05:16:29,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2021-11-03 05:16:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 4008. [2021-11-03 05:16:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 4003 states have (on average 1.2135898076442668) internal successors, (4858), 4007 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 4858 transitions. [2021-11-03 05:16:30,441 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 4858 transitions. Word has length 132 [2021-11-03 05:16:30,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:30,441 INFO L470 AbstractCegarLoop]: Abstraction has 4008 states and 4858 transitions. [2021-11-03 05:16:30,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 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 05:16:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 4858 transitions. [2021-11-03 05:16:30,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:16:30,447 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:30,448 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 05:16:30,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 05:16:30,448 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:16:30,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:30,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1796484446, now seen corresponding path program 1 times [2021-11-03 05:16:30,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:16:30,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256076894] [2021-11-03 05:16:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:30,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:34,515 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 05:16:34,516 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:16:34,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256076894] [2021-11-03 05:16:34,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256076894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:34,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:34,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-03 05:16:34,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668537554] [2021-11-03 05:16:34,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 05:16:34,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:16:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 05:16:34,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 05:16:34,519 INFO L87 Difference]: Start difference. First operand 4008 states and 4858 transitions. Second operand has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 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 05:16:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:44,324 INFO L93 Difference]: Finished difference Result 5671 states and 7079 transitions. [2021-11-03 05:16:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 05:16:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 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 05:16:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:44,335 INFO L225 Difference]: With dead ends: 5671 [2021-11-03 05:16:44,335 INFO L226 Difference]: Without dead ends: 5663 [2021-11-03 05:16:44,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2021-11-03 05:16:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2021-11-03 05:16:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 4130. [2021-11-03 05:16:44,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 4125 states have (on average 1.2106666666666666) internal successors, (4994), 4129 states have internal predecessors, (4994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 4994 transitions. [2021-11-03 05:16:44,875 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 4994 transitions. Word has length 132 [2021-11-03 05:16:44,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:44,875 INFO L470 AbstractCegarLoop]: Abstraction has 4130 states and 4994 transitions. [2021-11-03 05:16:44,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 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 05:16:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 4994 transitions. [2021-11-03 05:16:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:16:44,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:44,881 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 05:16:44,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 05:16:44,882 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:16:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash -317368913, now seen corresponding path program 1 times [2021-11-03 05:16:44,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:16:44,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975025725] [2021-11-03 05:16:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:44,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:49,461 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 05:16:49,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:16:49,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975025725] [2021-11-03 05:16:49,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975025725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:49,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:49,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-03 05:16:49,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188161775] [2021-11-03 05:16:49,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 05:16:49,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:16:49,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 05:16:49,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:16:49,464 INFO L87 Difference]: Start difference. First operand 4130 states and 4994 transitions. Second operand has 33 states, 33 states have (on average 4.0) internal successors, (132), 32 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 05:16:59,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:59,783 INFO L93 Difference]: Finished difference Result 4979 states and 6019 transitions. [2021-11-03 05:16:59,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-03 05:16:59,784 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0) internal successors, (132), 32 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 05:16:59,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:59,792 INFO L225 Difference]: With dead ends: 4979 [2021-11-03 05:16:59,792 INFO L226 Difference]: Without dead ends: 4807 [2021-11-03 05:16:59,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=655, Invalid=3505, Unknown=0, NotChecked=0, Total=4160 [2021-11-03 05:16:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2021-11-03 05:17:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 4271. [2021-11-03 05:17:00,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 4266 states have (on average 1.2107360525082045) internal successors, (5165), 4270 states have internal predecessors, (5165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 5165 transitions. [2021-11-03 05:17:00,350 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 5165 transitions. Word has length 132 [2021-11-03 05:17:00,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:00,351 INFO L470 AbstractCegarLoop]: Abstraction has 4271 states and 5165 transitions. [2021-11-03 05:17:00,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0) internal successors, (132), 32 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 05:17:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 5165 transitions. [2021-11-03 05:17:00,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 05:17:00,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:00,357 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 05:17:00,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 05:17:00,357 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:00,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:00,358 INFO L85 PathProgramCache]: Analyzing trace with hash 327029317, now seen corresponding path program 1 times [2021-11-03 05:17:00,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:00,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831296559] [2021-11-03 05:17:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:00,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:05,414 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 05:17:05,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:05,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831296559] [2021-11-03 05:17:05,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831296559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:05,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:05,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-03 05:17:05,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889615590] [2021-11-03 05:17:05,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-03 05:17:05,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:05,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-03 05:17:05,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 05:17:05,418 INFO L87 Difference]: Start difference. First operand 4271 states and 5165 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 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 05:17:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:13,229 INFO L93 Difference]: Finished difference Result 5622 states and 6996 transitions. [2021-11-03 05:17:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 05:17:13,230 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 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 05:17:13,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:13,236 INFO L225 Difference]: With dead ends: 5622 [2021-11-03 05:17:13,236 INFO L226 Difference]: Without dead ends: 5479 [2021-11-03 05:17:13,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=417, Invalid=2553, Unknown=0, NotChecked=0, Total=2970 [2021-11-03 05:17:13,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2021-11-03 05:17:13,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 4444. [2021-11-03 05:17:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4444 states, 4439 states have (on average 1.2059022302320341) internal successors, (5353), 4443 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:13,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 5353 transitions. [2021-11-03 05:17:13,730 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 5353 transitions. Word has length 132 [2021-11-03 05:17:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:13,731 INFO L470 AbstractCegarLoop]: Abstraction has 4444 states and 5353 transitions. [2021-11-03 05:17:13,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 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 05:17:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 5353 transitions. [2021-11-03 05:17:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 05:17:13,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:13,735 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:13,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 05:17:13,736 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1563355095, now seen corresponding path program 1 times [2021-11-03 05:17:13,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:13,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970069058] [2021-11-03 05:17:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:13,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:13,777 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 05:17:13,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:13,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970069058] [2021-11-03 05:17:13,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970069058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:13,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:13,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:17:13,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298980317] [2021-11-03 05:17:13,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:13,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:13,780 INFO L87 Difference]: Start difference. First operand 4444 states and 5353 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:14,425 INFO L93 Difference]: Finished difference Result 7575 states and 9221 transitions. [2021-11-03 05:17:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:14,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-03 05:17:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:14,429 INFO L225 Difference]: With dead ends: 7575 [2021-11-03 05:17:14,429 INFO L226 Difference]: Without dead ends: 4733 [2021-11-03 05:17:14,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:14,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4733 states. [2021-11-03 05:17:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4733 to 4385. [2021-11-03 05:17:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4380 states have (on average 1.200228310502283) internal successors, (5257), 4384 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 5257 transitions. [2021-11-03 05:17:14,858 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 5257 transitions. Word has length 133 [2021-11-03 05:17:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:14,859 INFO L470 AbstractCegarLoop]: Abstraction has 4385 states and 5257 transitions. [2021-11-03 05:17:14,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 5257 transitions. [2021-11-03 05:17:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 05:17:14,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:14,865 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:14,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 05:17:14,865 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:14,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash 529612928, now seen corresponding path program 1 times [2021-11-03 05:17:14,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:14,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294328449] [2021-11-03 05:17:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:14,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:14,921 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 05:17:14,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:14,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294328449] [2021-11-03 05:17:14,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294328449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:14,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:14,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:17:14,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442462647] [2021-11-03 05:17:14,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:14,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:14,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:14,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:14,924 INFO L87 Difference]: Start difference. First operand 4385 states and 5257 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:15,634 INFO L93 Difference]: Finished difference Result 7096 states and 8603 transitions. [2021-11-03 05:17:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:15,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-03 05:17:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:15,639 INFO L225 Difference]: With dead ends: 7096 [2021-11-03 05:17:15,639 INFO L226 Difference]: Without dead ends: 4342 [2021-11-03 05:17:15,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:15,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2021-11-03 05:17:16,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 4153. [2021-11-03 05:17:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 4148 states have (on average 1.199132111861138) internal successors, (4974), 4152 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 4974 transitions. [2021-11-03 05:17:16,068 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 4974 transitions. Word has length 133 [2021-11-03 05:17:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:16,069 INFO L470 AbstractCegarLoop]: Abstraction has 4153 states and 4974 transitions. [2021-11-03 05:17:16,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 4974 transitions. [2021-11-03 05:17:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 05:17:16,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:16,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:16,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 05:17:16,074 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:16,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:16,075 INFO L85 PathProgramCache]: Analyzing trace with hash -70709741, now seen corresponding path program 1 times [2021-11-03 05:17:16,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:16,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248125883] [2021-11-03 05:17:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:16,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:16,131 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 05:17:16,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:16,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248125883] [2021-11-03 05:17:16,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248125883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:16,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:16,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:17:16,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041478151] [2021-11-03 05:17:16,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:16,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:16,134 INFO L87 Difference]: Start difference. First operand 4153 states and 4974 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:16,839 INFO L93 Difference]: Finished difference Result 6575 states and 7911 transitions. [2021-11-03 05:17:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:16,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-03 05:17:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:16,844 INFO L225 Difference]: With dead ends: 6575 [2021-11-03 05:17:16,845 INFO L226 Difference]: Without dead ends: 4037 [2021-11-03 05:17:16,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4037 states. [2021-11-03 05:17:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4037 to 4007. [2021-11-03 05:17:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 4002 states have (on average 1.1944027986006998) internal successors, (4780), 4006 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 4780 transitions. [2021-11-03 05:17:17,288 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 4780 transitions. Word has length 133 [2021-11-03 05:17:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:17,289 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 4780 transitions. [2021-11-03 05:17:17,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 4780 transitions. [2021-11-03 05:17:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 05:17:17,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:17,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:17,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 05:17:17,295 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash -520306153, now seen corresponding path program 1 times [2021-11-03 05:17:17,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:17,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003934575] [2021-11-03 05:17:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:17,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:17,348 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 05:17:17,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:17,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003934575] [2021-11-03 05:17:17,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003934575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:17,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:17,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:17:17,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450713440] [2021-11-03 05:17:17,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:17,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:17,351 INFO L87 Difference]: Start difference. First operand 4007 states and 4780 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:17,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:17,855 INFO L93 Difference]: Finished difference Result 6717 states and 8045 transitions. [2021-11-03 05:17:17,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:17,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-03 05:17:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:17,860 INFO L225 Difference]: With dead ends: 6717 [2021-11-03 05:17:17,860 INFO L226 Difference]: Without dead ends: 4057 [2021-11-03 05:17:17,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-11-03 05:17:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 3888. [2021-11-03 05:17:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 3883 states have (on average 1.1887715683749678) internal successors, (4616), 3887 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 4616 transitions. [2021-11-03 05:17:18,225 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 4616 transitions. Word has length 133 [2021-11-03 05:17:18,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:18,225 INFO L470 AbstractCegarLoop]: Abstraction has 3888 states and 4616 transitions. [2021-11-03 05:17:18,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 4616 transitions. [2021-11-03 05:17:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 05:17:18,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:18,230 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:18,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 05:17:18,231 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:18,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:18,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2099135496, now seen corresponding path program 1 times [2021-11-03 05:17:18,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:18,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768437314] [2021-11-03 05:17:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:18,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:18,272 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 05:17:18,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:18,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768437314] [2021-11-03 05:17:18,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768437314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:18,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:18,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:17:18,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393686815] [2021-11-03 05:17:18,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:18,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:18,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:18,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:18,275 INFO L87 Difference]: Start difference. First operand 3888 states and 4616 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:18,790 INFO L93 Difference]: Finished difference Result 6325 states and 7545 transitions. [2021-11-03 05:17:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:18,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-03 05:17:18,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:18,795 INFO L225 Difference]: With dead ends: 6325 [2021-11-03 05:17:18,795 INFO L226 Difference]: Without dead ends: 3796 [2021-11-03 05:17:18,798 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:18,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2021-11-03 05:17:19,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3766. [2021-11-03 05:17:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3761 states have (on average 1.1826641850571658) internal successors, (4448), 3765 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 4448 transitions. [2021-11-03 05:17:19,203 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 4448 transitions. Word has length 133 [2021-11-03 05:17:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:19,203 INFO L470 AbstractCegarLoop]: Abstraction has 3766 states and 4448 transitions. [2021-11-03 05:17:19,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 4448 transitions. [2021-11-03 05:17:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 05:17:19,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:19,209 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:19,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 05:17:19,209 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1176183790, now seen corresponding path program 1 times [2021-11-03 05:17:19,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:19,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953970192] [2021-11-03 05:17:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:19,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:19,272 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 05:17:19,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:19,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953970192] [2021-11-03 05:17:19,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953970192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:19,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:19,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:17:19,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390769551] [2021-11-03 05:17:19,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:19,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:19,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:19,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:19,275 INFO L87 Difference]: Start difference. First operand 3766 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:19,737 INFO L93 Difference]: Finished difference Result 7006 states and 8341 transitions. [2021-11-03 05:17:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-03 05:17:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:19,742 INFO L225 Difference]: With dead ends: 7006 [2021-11-03 05:17:19,742 INFO L226 Difference]: Without dead ends: 3741 [2021-11-03 05:17:19,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2021-11-03 05:17:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 3474. [2021-11-03 05:17:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3469 states have (on average 1.178725857595849) internal successors, (4089), 3473 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 4089 transitions. [2021-11-03 05:17:20,203 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 4089 transitions. Word has length 133 [2021-11-03 05:17:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:20,204 INFO L470 AbstractCegarLoop]: Abstraction has 3474 states and 4089 transitions. [2021-11-03 05:17:20,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 4089 transitions. [2021-11-03 05:17:20,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 05:17:20,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:20,209 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:20,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 05:17:20,209 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:20,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1655977380, now seen corresponding path program 1 times [2021-11-03 05:17:20,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:20,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207728104] [2021-11-03 05:17:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:20,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:20,282 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 05:17:20,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:20,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207728104] [2021-11-03 05:17:20,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207728104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:20,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:20,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:17:20,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916704003] [2021-11-03 05:17:20,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:20,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:20,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:20,285 INFO L87 Difference]: Start difference. First operand 3474 states and 4089 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:20,701 INFO L93 Difference]: Finished difference Result 4142 states and 4893 transitions. [2021-11-03 05:17:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:20,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-03 05:17:20,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:20,705 INFO L225 Difference]: With dead ends: 4142 [2021-11-03 05:17:20,705 INFO L226 Difference]: Without dead ends: 3436 [2021-11-03 05:17:20,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2021-11-03 05:17:21,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3415. [2021-11-03 05:17:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 3410 states have (on average 1.1744868035190617) internal successors, (4005), 3414 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 4005 transitions. [2021-11-03 05:17:21,050 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 4005 transitions. Word has length 135 [2021-11-03 05:17:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:21,051 INFO L470 AbstractCegarLoop]: Abstraction has 3415 states and 4005 transitions. [2021-11-03 05:17:21,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 4005 transitions. [2021-11-03 05:17:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:17:21,054 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:21,054 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:21,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 05:17:21,054 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash 67165632, now seen corresponding path program 1 times [2021-11-03 05:17:21,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:21,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729086220] [2021-11-03 05:17:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:21,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:22,594 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 05:17:22,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:22,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729086220] [2021-11-03 05:17:22,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729086220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:22,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:22,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-03 05:17:22,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104685136] [2021-11-03 05:17:22,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 05:17:22,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 05:17:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2021-11-03 05:17:22,596 INFO L87 Difference]: Start difference. First operand 3415 states and 4005 transitions. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:25,470 INFO L93 Difference]: Finished difference Result 4374 states and 5299 transitions. [2021-11-03 05:17:25,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-03 05:17:25,470 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:17:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:25,474 INFO L225 Difference]: With dead ends: 4374 [2021-11-03 05:17:25,474 INFO L226 Difference]: Without dead ends: 4366 [2021-11-03 05:17:25,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=256, Invalid=1226, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 05:17:25,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2021-11-03 05:17:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 3552. [2021-11-03 05:17:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3547 states have (on average 1.169720890893713) internal successors, (4149), 3551 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 4149 transitions. [2021-11-03 05:17:25,848 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 4149 transitions. Word has length 138 [2021-11-03 05:17:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:25,849 INFO L470 AbstractCegarLoop]: Abstraction has 3552 states and 4149 transitions. [2021-11-03 05:17:25,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 4149 transitions. [2021-11-03 05:17:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:17:25,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:25,852 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:25,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 05:17:25,852 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2046687727, now seen corresponding path program 1 times [2021-11-03 05:17:25,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:25,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464351364] [2021-11-03 05:17:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:25,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:31,755 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 05:17:31,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:31,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464351364] [2021-11-03 05:17:31,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464351364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:31,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:31,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-03 05:17:31,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901878341] [2021-11-03 05:17:31,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 05:17:31,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:31,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 05:17:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 05:17:31,758 INFO L87 Difference]: Start difference. First operand 3552 states and 4149 transitions. Second operand has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:39,715 INFO L93 Difference]: Finished difference Result 4978 states and 6109 transitions. [2021-11-03 05:17:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 05:17:39,715 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:17:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:39,719 INFO L225 Difference]: With dead ends: 4978 [2021-11-03 05:17:39,719 INFO L226 Difference]: Without dead ends: 4971 [2021-11-03 05:17:39,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=559, Invalid=2863, Unknown=0, NotChecked=0, Total=3422 [2021-11-03 05:17:39,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4971 states. [2021-11-03 05:17:40,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4971 to 3552. [2021-11-03 05:17:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3547 states have (on average 1.1691570341133353) internal successors, (4147), 3551 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:40,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 4147 transitions. [2021-11-03 05:17:40,066 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 4147 transitions. Word has length 138 [2021-11-03 05:17:40,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:40,066 INFO L470 AbstractCegarLoop]: Abstraction has 3552 states and 4147 transitions. [2021-11-03 05:17:40,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:40,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 4147 transitions. [2021-11-03 05:17:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:17:40,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:40,069 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, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:40,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 05:17:40,069 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:40,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1402289497, now seen corresponding path program 1 times [2021-11-03 05:17:40,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:40,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248288570] [2021-11-03 05:17:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:40,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:17:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:47,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:17:47,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248288570] [2021-11-03 05:17:47,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248288570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:47,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:47,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-03 05:17:47,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512573289] [2021-11-03 05:17:47,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-03 05:17:47,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:17:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-03 05:17:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 05:17:47,540 INFO L87 Difference]: Start difference. First operand 3552 states and 4147 transitions. Second operand has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:59,445 INFO L93 Difference]: Finished difference Result 4537 states and 5509 transitions. [2021-11-03 05:17:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 05:17:59,446 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:17:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:59,451 INFO L225 Difference]: With dead ends: 4537 [2021-11-03 05:17:59,451 INFO L226 Difference]: Without dead ends: 4400 [2021-11-03 05:17:59,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=635, Invalid=3397, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 05:17:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2021-11-03 05:17:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 3516. [2021-11-03 05:17:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3511 states have (on average 1.17003702648818) internal successors, (4108), 3515 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4108 transitions. [2021-11-03 05:17:59,864 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4108 transitions. Word has length 138 [2021-11-03 05:17:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:59,864 INFO L470 AbstractCegarLoop]: Abstraction has 3516 states and 4108 transitions. [2021-11-03 05:17:59,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4108 transitions. [2021-11-03 05:17:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:17:59,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:59,868 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:59,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 05:17:59,869 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:59,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1833495294, now seen corresponding path program 1 times [2021-11-03 05:17:59,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:17:59,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807393646] [2021-11-03 05:17:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:59,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:08,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:08,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807393646] [2021-11-03 05:18:08,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807393646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:08,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:08,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-11-03 05:18:08,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006035619] [2021-11-03 05:18:08,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-03 05:18:08,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:08,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-03 05:18:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 05:18:08,496 INFO L87 Difference]: Start difference. First operand 3516 states and 4108 transitions. Second operand has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:17,532 INFO L93 Difference]: Finished difference Result 4499 states and 5452 transitions. [2021-11-03 05:18:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-03 05:18:17,532 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:18:17,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:17,537 INFO L225 Difference]: With dead ends: 4499 [2021-11-03 05:18:17,537 INFO L226 Difference]: Without dead ends: 4354 [2021-11-03 05:18:17,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=655, Invalid=3635, Unknown=0, NotChecked=0, Total=4290 [2021-11-03 05:18:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2021-11-03 05:18:17,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 3516. [2021-11-03 05:18:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3511 states have (on average 1.1694673882084876) internal successors, (4106), 3515 states have internal predecessors, (4106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4106 transitions. [2021-11-03 05:18:17,990 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4106 transitions. Word has length 138 [2021-11-03 05:18:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:17,991 INFO L470 AbstractCegarLoop]: Abstraction has 3516 states and 4106 transitions. [2021-11-03 05:18:17,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4106 transitions. [2021-11-03 05:18:17,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:18:17,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:17,995 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:17,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 05:18:17,995 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:18:17,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 347618643, now seen corresponding path program 1 times [2021-11-03 05:18:17,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:17,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60358821] [2021-11-03 05:18:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:17,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:24,643 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 05:18:24,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:24,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60358821] [2021-11-03 05:18:24,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60358821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:24,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:24,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-03 05:18:24,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622555625] [2021-11-03 05:18:24,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-03 05:18:24,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:24,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-03 05:18:24,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 05:18:24,646 INFO L87 Difference]: Start difference. First operand 3516 states and 4106 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:34,618 INFO L93 Difference]: Finished difference Result 3618 states and 4241 transitions. [2021-11-03 05:18:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 05:18:34,619 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:18:34,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:34,622 INFO L225 Difference]: With dead ends: 3618 [2021-11-03 05:18:34,622 INFO L226 Difference]: Without dead ends: 3607 [2021-11-03 05:18:34,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=661, Invalid=3245, Unknown=0, NotChecked=0, Total=3906 [2021-11-03 05:18:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2021-11-03 05:18:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3516. [2021-11-03 05:18:34,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3511 states have (on average 1.1691825690686415) internal successors, (4105), 3515 states have internal predecessors, (4105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4105 transitions. [2021-11-03 05:18:34,993 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4105 transitions. Word has length 138 [2021-11-03 05:18:34,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:34,993 INFO L470 AbstractCegarLoop]: Abstraction has 3516 states and 4105 transitions. [2021-11-03 05:18:34,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:34,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4105 transitions. [2021-11-03 05:18:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:18:34,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:34,997 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:34,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 05:18:34,997 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:18:34,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:34,998 INFO L85 PathProgramCache]: Analyzing trace with hash 992016873, now seen corresponding path program 1 times [2021-11-03 05:18:34,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:34,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222878502] [2021-11-03 05:18:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:34,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:38,679 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 05:18:38,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:38,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222878502] [2021-11-03 05:18:38,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222878502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:38,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:38,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-03 05:18:38,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200464431] [2021-11-03 05:18:38,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-03 05:18:38,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-03 05:18:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-11-03 05:18:38,681 INFO L87 Difference]: Start difference. First operand 3516 states and 4105 transitions. Second operand has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:44,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:44,141 INFO L93 Difference]: Finished difference Result 4981 states and 6059 transitions. [2021-11-03 05:18:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-03 05:18:44,142 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:18:44,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:44,146 INFO L225 Difference]: With dead ends: 4981 [2021-11-03 05:18:44,146 INFO L226 Difference]: Without dead ends: 4973 [2021-11-03 05:18:44,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=291, Invalid=1431, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 05:18:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4973 states. [2021-11-03 05:18:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4973 to 3516. [2021-11-03 05:18:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3511 states have (on average 1.1683281116491029) internal successors, (4102), 3515 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4102 transitions. [2021-11-03 05:18:44,539 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4102 transitions. Word has length 138 [2021-11-03 05:18:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:44,539 INFO L470 AbstractCegarLoop]: Abstraction has 3516 states and 4102 transitions. [2021-11-03 05:18:44,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4102 transitions. [2021-11-03 05:18:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:18:44,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:44,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:44,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 05:18:44,543 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:18:44,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash 47671936, now seen corresponding path program 1 times [2021-11-03 05:18:44,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:44,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789841974] [2021-11-03 05:18:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:44,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:51,427 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 05:18:51,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:51,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789841974] [2021-11-03 05:18:51,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789841974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:51,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:51,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-03 05:18:51,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173171213] [2021-11-03 05:18:51,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-03 05:18:51,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:51,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-03 05:18:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1221, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 05:18:51,429 INFO L87 Difference]: Start difference. First operand 3516 states and 4102 transitions. Second operand has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:05,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:05,388 INFO L93 Difference]: Finished difference Result 4358 states and 5279 transitions. [2021-11-03 05:19:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-03 05:19:05,388 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:19:05,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:05,393 INFO L225 Difference]: With dead ends: 4358 [2021-11-03 05:19:05,393 INFO L226 Difference]: Without dead ends: 4354 [2021-11-03 05:19:05,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=623, Invalid=3537, Unknown=0, NotChecked=0, Total=4160 [2021-11-03 05:19:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2021-11-03 05:19:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 3516. [2021-11-03 05:19:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3511 states have (on average 1.1680432925092565) internal successors, (4101), 3515 states have internal predecessors, (4101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4101 transitions. [2021-11-03 05:19:05,916 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4101 transitions. Word has length 138 [2021-11-03 05:19:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:05,917 INFO L470 AbstractCegarLoop]: Abstraction has 3516 states and 4101 transitions. [2021-11-03 05:19:05,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4101 transitions. [2021-11-03 05:19:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:19:05,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:05,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:05,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 05:19:05,922 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:19:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2066181423, now seen corresponding path program 1 times [2021-11-03 05:19:05,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:05,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854835586] [2021-11-03 05:19:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:05,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:12,282 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 05:19:12,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:12,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854835586] [2021-11-03 05:19:12,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854835586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:12,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:12,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-03 05:19:12,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715070852] [2021-11-03 05:19:12,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-03 05:19:12,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-03 05:19:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 05:19:12,286 INFO L87 Difference]: Start difference. First operand 3516 states and 4101 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:24,391 INFO L93 Difference]: Finished difference Result 3568 states and 4168 transitions. [2021-11-03 05:19:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 05:19:24,392 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:19:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:24,395 INFO L225 Difference]: With dead ends: 3568 [2021-11-03 05:19:24,395 INFO L226 Difference]: Without dead ends: 3561 [2021-11-03 05:19:24,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=606, Invalid=3176, Unknown=0, NotChecked=0, Total=3782 [2021-11-03 05:19:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-11-03 05:19:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3516. [2021-11-03 05:19:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3511 states have (on average 1.1677584733694104) internal successors, (4100), 3515 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4100 transitions. [2021-11-03 05:19:24,810 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4100 transitions. Word has length 138 [2021-11-03 05:19:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:24,810 INFO L470 AbstractCegarLoop]: Abstraction has 3516 states and 4100 transitions. [2021-11-03 05:19:24,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4100 transitions. [2021-11-03 05:19:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:19:24,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:24,814 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:24,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 05:19:24,814 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:19:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:24,815 INFO L85 PathProgramCache]: Analyzing trace with hash 186825986, now seen corresponding path program 1 times [2021-11-03 05:19:24,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:24,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657490205] [2021-11-03 05:19:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:24,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:30,169 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 05:19:30,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:30,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657490205] [2021-11-03 05:19:30,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657490205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:30,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:30,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-03 05:19:30,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934747714] [2021-11-03 05:19:30,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-03 05:19:30,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:30,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-03 05:19:30,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1286, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 05:19:30,171 INFO L87 Difference]: Start difference. First operand 3516 states and 4100 transitions. Second operand has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:44,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:44,221 INFO L93 Difference]: Finished difference Result 4395 states and 5318 transitions. [2021-11-03 05:19:44,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-03 05:19:44,222 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:19:44,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:44,226 INFO L225 Difference]: With dead ends: 4395 [2021-11-03 05:19:44,226 INFO L226 Difference]: Without dead ends: 4387 [2021-11-03 05:19:44,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=605, Invalid=4225, Unknown=0, NotChecked=0, Total=4830 [2021-11-03 05:19:44,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2021-11-03 05:19:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 3541. [2021-11-03 05:19:44,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3541 states, 3536 states have (on average 1.1668552036199096) internal successors, (4126), 3540 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:44,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 4126 transitions. [2021-11-03 05:19:44,627 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 4126 transitions. Word has length 138 [2021-11-03 05:19:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:44,627 INFO L470 AbstractCegarLoop]: Abstraction has 3541 states and 4126 transitions. [2021-11-03 05:19:44,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 4126 transitions. [2021-11-03 05:19:44,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:19:44,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:44,629 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, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:44,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 05:19:44,629 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:19:44,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:44,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1927027373, now seen corresponding path program 1 times [2021-11-03 05:19:44,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:44,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88473488] [2021-11-03 05:19:44,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:44,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:35,496 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 20 DAG size of output: 1 [2021-11-03 05:27:56,899 WARN L207 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 20 DAG size of output: 1 [2021-11-03 05:28:10,727 WARN L207 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 20 DAG size of output: 1 [2021-11-03 05:28:30,381 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification. DAG size of input: 20 DAG size of output: 1