./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh --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 da0a9170cb1355df936e020ec31cd269723d3c83f610103689e93f9c7ac8eb3a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:52:42,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:52:42,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:52:42,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:52:42,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:52:42,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:52:42,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:52:42,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:52:42,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:52:42,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:52:42,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:52:42,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:52:42,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:52:42,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:52:42,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:52:42,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:52:42,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:52:42,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:52:42,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:52:42,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:52:42,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:52:42,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:52:42,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:52:42,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:52:42,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:52:42,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:52:42,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:52:42,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:52:42,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:52:42,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:52:42,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:52:42,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:52:42,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:52:42,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:52:42,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:52:42,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:52:42,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:52:42,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:52:42,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:52:42,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:52:42,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:52:42,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:52:42,454 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:52:42,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:52:42,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:52:42,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:52:42,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:52:42,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:52:42,455 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:52:42,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:52:42,456 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:52:42,456 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:52:42,456 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:52:42,456 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:52:42,456 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:52:42,456 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:52:42,456 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:52:42,457 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:52:42,457 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:52:42,457 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:52:42,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:52:42,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:52:42,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:52:42,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:52:42,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:52:42,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:52:42,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:52:42,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:52:42,459 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:52:42,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:52:42,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:52:42,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:52:42,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:52:42,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:52:42,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:52:42,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:52:42,460 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:52:42,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:52:42,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:52:42,461 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:52:42,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:52:42,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:52:42,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:52:42,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da0a9170cb1355df936e020ec31cd269723d3c83f610103689e93f9c7ac8eb3a [2022-12-14 10:52:42,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:52:42,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:52:42,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:52:42,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:52:42,692 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:52:42,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-12-14 10:52:45,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:52:45,515 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:52:45,515 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-12-14 10:52:45,526 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/data/7bd7f3acb/dfdba30520be41e4837a920ed8e720b7/FLAG0f00e42e3 [2022-12-14 10:52:45,537 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/data/7bd7f3acb/dfdba30520be41e4837a920ed8e720b7 [2022-12-14 10:52:45,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:52:45,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:52:45,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:52:45,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:52:45,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:52:45,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:52:45" (1/1) ... [2022-12-14 10:52:45,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146cf14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:45, skipping insertion in model container [2022-12-14 10:52:45,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:52:45" (1/1) ... [2022-12-14 10:52:45,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:52:45,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:52:45,814 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2022-12-14 10:52:45,823 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2022-12-14 10:52:45,833 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2022-12-14 10:52:45,841 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2022-12-14 10:52:45,886 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2022-12-14 10:52:45,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:52:45,934 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:52:45,999 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2022-12-14 10:52:46,003 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2022-12-14 10:52:46,010 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2022-12-14 10:52:46,017 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2022-12-14 10:52:46,050 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2022-12-14 10:52:46,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:52:46,088 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:52:46,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46 WrapperNode [2022-12-14 10:52:46,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:52:46,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:52:46,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:52:46,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:52:46,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,147 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1565 [2022-12-14 10:52:46,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:52:46,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:52:46,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:52:46,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:52:46,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,177 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:52:46,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:52:46,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:52:46,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:52:46,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (1/1) ... [2022-12-14 10:52:46,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:52:46,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:52:46,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:52:46,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d90690-9a34-43bf-8e5c-547bc2ff5b05/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:52:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:52:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:52:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:52:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:52:46,392 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:52:46,394 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:52:47,217 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:52:47,477 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:52:47,477 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:52:47,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:52:47 BoogieIcfgContainer [2022-12-14 10:52:47,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:52:47,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:52:47,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:52:47,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:52:47,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:52:45" (1/3) ... [2022-12-14 10:52:47,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c82f63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:52:47, skipping insertion in model container [2022-12-14 10:52:47,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:52:46" (2/3) ... [2022-12-14 10:52:47,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c82f63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:52:47, skipping insertion in model container [2022-12-14 10:52:47,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:52:47" (3/3) ... [2022-12-14 10:52:47,486 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-12-14 10:52:47,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:52:47,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-12-14 10:52:47,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:52:47,544 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78a814c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:52:47,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-14 10:52:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 285 states have (on average 1.8035087719298246) internal successors, (514), 296 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 10:52:47,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:47,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:52:47,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:52:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:47,562 INFO L85 PathProgramCache]: Analyzing trace with hash -563332689, now seen corresponding path program 1 times [2022-12-14 10:52:47,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:47,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549485112] [2022-12-14 10:52:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:47,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:52:48,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:48,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549485112] [2022-12-14 10:52:48,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549485112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:48,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:48,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:52:48,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018175037] [2022-12-14 10:52:48,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:48,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:52:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:52:48,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:52:48,438 INFO L87 Difference]: Start difference. First operand has 297 states, 285 states have (on average 1.8035087719298246) internal successors, (514), 296 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:48,760 INFO L93 Difference]: Finished difference Result 770 states and 1324 transitions. [2022-12-14 10:52:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:52:48,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-12-14 10:52:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:48,776 INFO L225 Difference]: With dead ends: 770 [2022-12-14 10:52:48,776 INFO L226 Difference]: Without dead ends: 517 [2022-12-14 10:52:48,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:52:48,782 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 1430 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:48,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 1277 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:52:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-12-14 10:52:48,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 495. [2022-12-14 10:52:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 490 states have (on average 1.2836734693877552) internal successors, (629), 494 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 629 transitions. [2022-12-14 10:52:48,850 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 629 transitions. Word has length 116 [2022-12-14 10:52:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:48,851 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 629 transitions. [2022-12-14 10:52:48,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 629 transitions. [2022-12-14 10:52:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 10:52:48,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:48,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:52:48,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:52:48,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:52:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash 232497719, now seen corresponding path program 1 times [2022-12-14 10:52:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:48,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265374512] [2022-12-14 10:52:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:52:49,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:49,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265374512] [2022-12-14 10:52:49,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265374512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:49,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:49,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:52:49,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201755137] [2022-12-14 10:52:49,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:49,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:52:49,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:49,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:52:49,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:52:49,816 INFO L87 Difference]: Start difference. First operand 495 states and 629 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:50,057 INFO L93 Difference]: Finished difference Result 1344 states and 1707 transitions. [2022-12-14 10:52:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:52:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-12-14 10:52:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:50,062 INFO L225 Difference]: With dead ends: 1344 [2022-12-14 10:52:50,062 INFO L226 Difference]: Without dead ends: 930 [2022-12-14 10:52:50,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:52:50,065 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1266 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:50,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 666 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:52:50,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-12-14 10:52:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 908. [2022-12-14 10:52:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 903 states have (on average 1.283499446290144) internal successors, (1159), 907 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1159 transitions. [2022-12-14 10:52:50,144 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1159 transitions. Word has length 122 [2022-12-14 10:52:50,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:50,145 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1159 transitions. [2022-12-14 10:52:50,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:50,145 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1159 transitions. [2022-12-14 10:52:50,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 10:52:50,147 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:50,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:52:50,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:52:50,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:52:50,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:50,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2015235017, now seen corresponding path program 1 times [2022-12-14 10:52:50,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:50,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244873032] [2022-12-14 10:52:50,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:50,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:52:50,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:50,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244873032] [2022-12-14 10:52:50,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244873032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:50,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:50,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:52:50,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331107377] [2022-12-14 10:52:50,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:50,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:52:50,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:50,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:52:50,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:52:50,561 INFO L87 Difference]: Start difference. First operand 908 states and 1159 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:50,839 INFO L93 Difference]: Finished difference Result 2548 states and 3241 transitions. [2022-12-14 10:52:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:52:50,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-12-14 10:52:50,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:50,843 INFO L225 Difference]: With dead ends: 2548 [2022-12-14 10:52:50,843 INFO L226 Difference]: Without dead ends: 1722 [2022-12-14 10:52:50,844 INFO L412 NwaCegarLoop]: 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 [2022-12-14 10:52:50,845 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 924 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:50,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 652 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:52:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-12-14 10:52:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1700. [2022-12-14 10:52:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1695 states have (on average 1.2749262536873156) internal successors, (2161), 1699 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2161 transitions. [2022-12-14 10:52:50,990 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2161 transitions. Word has length 128 [2022-12-14 10:52:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:50,991 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 2161 transitions. [2022-12-14 10:52:50,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2161 transitions. [2022-12-14 10:52:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:52:50,993 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:50,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:52:50,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:52:50,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:52:50,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:50,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1286505672, now seen corresponding path program 1 times [2022-12-14 10:52:50,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:50,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752886868] [2022-12-14 10:52:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:50,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:52:51,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:51,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752886868] [2022-12-14 10:52:51,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752886868] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:51,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:51,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:52:51,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853498909] [2022-12-14 10:52:51,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:51,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:52:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:52:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:52:51,047 INFO L87 Difference]: Start difference. First operand 1700 states and 2161 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:51,486 INFO L93 Difference]: Finished difference Result 3570 states and 4606 transitions. [2022-12-14 10:52:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:52:51,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:52:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:51,502 INFO L225 Difference]: With dead ends: 3570 [2022-12-14 10:52:51,502 INFO L226 Difference]: Without dead ends: 2564 [2022-12-14 10:52:51,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:52:51,505 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 170 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:51,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 646 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:52:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-12-14 10:52:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2114. [2022-12-14 10:52:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 2109 states have (on average 1.3091512565196777) internal successors, (2761), 2113 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 2761 transitions. [2022-12-14 10:52:51,731 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 2761 transitions. Word has length 134 [2022-12-14 10:52:51,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:51,731 INFO L495 AbstractCegarLoop]: Abstraction has 2114 states and 2761 transitions. [2022-12-14 10:52:51,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 2761 transitions. [2022-12-14 10:52:51,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:52:51,734 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:51,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:52:51,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:52:51,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:52:51,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:51,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1240385437, now seen corresponding path program 1 times [2022-12-14 10:52:51,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:51,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733978155] [2022-12-14 10:52:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:51,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:52:52,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:52,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733978155] [2022-12-14 10:52:52,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733978155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:52,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:52,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:52:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671133932] [2022-12-14 10:52:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:52,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:52:52,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:52,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:52:52,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:52:52,298 INFO L87 Difference]: Start difference. First operand 2114 states and 2761 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:52,840 INFO L93 Difference]: Finished difference Result 4036 states and 5255 transitions. [2022-12-14 10:52:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:52:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:52:52,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:52,846 INFO L225 Difference]: With dead ends: 4036 [2022-12-14 10:52:52,847 INFO L226 Difference]: Without dead ends: 3082 [2022-12-14 10:52:52,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:52:52,848 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1275 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:52,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 662 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:52:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2022-12-14 10:52:53,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3060. [2022-12-14 10:52:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3055 states have (on average 1.297545008183306) internal successors, (3964), 3059 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 3964 transitions. [2022-12-14 10:52:53,138 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 3964 transitions. Word has length 134 [2022-12-14 10:52:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:53,138 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 3964 transitions. [2022-12-14 10:52:53,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 3964 transitions. [2022-12-14 10:52:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:52:53,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:53,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:52:53,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:52:53,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:52:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:53,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2043703212, now seen corresponding path program 1 times [2022-12-14 10:52:53,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:53,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802209925] [2022-12-14 10:52:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:53,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:52:53,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:53,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802209925] [2022-12-14 10:52:53,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802209925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:53,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:53,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:52:53,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445583917] [2022-12-14 10:52:53,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:53,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:52:53,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:52:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:52:53,230 INFO L87 Difference]: Start difference. First operand 3060 states and 3964 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:53,681 INFO L93 Difference]: Finished difference Result 6083 states and 7886 transitions. [2022-12-14 10:52:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:52:53,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:52:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:53,687 INFO L225 Difference]: With dead ends: 6083 [2022-12-14 10:52:53,687 INFO L226 Difference]: Without dead ends: 3060 [2022-12-14 10:52:53,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:52:53,690 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1015 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:53,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 274 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:52:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-12-14 10:52:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3060. [2022-12-14 10:52:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3055 states have (on average 1.2769230769230768) internal successors, (3901), 3059 states have internal predecessors, (3901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 3901 transitions. [2022-12-14 10:52:54,056 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 3901 transitions. Word has length 134 [2022-12-14 10:52:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:54,056 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 3901 transitions. [2022-12-14 10:52:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:52:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 3901 transitions. [2022-12-14 10:52:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:52:54,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:54,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:52:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:52:54,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:52:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1957422257, now seen corresponding path program 1 times [2022-12-14 10:52:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:54,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406094692] [2022-12-14 10:52:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:52:58,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406094692] [2022-12-14 10:52:58,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406094692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:58,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:58,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-12-14 10:52:58,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261534490] [2022-12-14 10:52:58,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:58,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 10:52:58,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:58,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 10:52:58,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-12-14 10:52:58,828 INFO L87 Difference]: Start difference. First operand 3060 states and 3901 transitions. Second operand has 30 states, 30 states have (on average 4.466666666666667) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:08,084 INFO L93 Difference]: Finished difference Result 9342 states and 12741 transitions. [2022-12-14 10:53:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-14 10:53:08,085 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.466666666666667) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:53:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:08,098 INFO L225 Difference]: With dead ends: 9342 [2022-12-14 10:53:08,099 INFO L226 Difference]: Without dead ends: 8547 [2022-12-14 10:53:08,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=711, Invalid=3711, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 10:53:08,101 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 4054 mSDsluCounter, 7003 mSDsCounter, 0 mSdLazyCounter, 3195 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4054 SdHoareTripleChecker+Valid, 7466 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:08,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4054 Valid, 7466 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3195 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 10:53:08,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8547 states. [2022-12-14 10:53:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8547 to 3980. [2022-12-14 10:53:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3975 states have (on average 1.2867924528301886) internal successors, (5115), 3979 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 5115 transitions. [2022-12-14 10:53:08,774 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 5115 transitions. Word has length 134 [2022-12-14 10:53:08,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:08,774 INFO L495 AbstractCegarLoop]: Abstraction has 3980 states and 5115 transitions. [2022-12-14 10:53:08,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.466666666666667) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 5115 transitions. [2022-12-14 10:53:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:53:08,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:08,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:53:08,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:53:08,777 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:53:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1189654120, now seen corresponding path program 1 times [2022-12-14 10:53:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:08,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546414718] [2022-12-14 10:53:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:53:12,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:12,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546414718] [2022-12-14 10:53:12,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546414718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:53:12,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:53:12,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-14 10:53:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528864325] [2022-12-14 10:53:12,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:53:12,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 10:53:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:53:12,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 10:53:12,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2022-12-14 10:53:12,988 INFO L87 Difference]: Start difference. First operand 3980 states and 5115 transitions. Second operand has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 28 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:20,170 INFO L93 Difference]: Finished difference Result 7465 states and 9818 transitions. [2022-12-14 10:53:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 10:53:20,171 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 28 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:53:20,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:20,182 INFO L225 Difference]: With dead ends: 7465 [2022-12-14 10:53:20,183 INFO L226 Difference]: Without dead ends: 7055 [2022-12-14 10:53:20,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=557, Invalid=2305, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 10:53:20,185 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2032 mSDsluCounter, 5742 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 6181 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:20,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2032 Valid, 6181 Invalid, 2579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 10:53:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7055 states. [2022-12-14 10:53:21,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7055 to 4295. [2022-12-14 10:53:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4295 states, 4290 states have (on average 1.2745920745920747) internal successors, (5468), 4294 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 5468 transitions. [2022-12-14 10:53:21,019 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 5468 transitions. Word has length 134 [2022-12-14 10:53:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:21,019 INFO L495 AbstractCegarLoop]: Abstraction has 4295 states and 5468 transitions. [2022-12-14 10:53:21,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 28 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 5468 transitions. [2022-12-14 10:53:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:53:21,022 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:21,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:53:21,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:53:21,022 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:53:21,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:21,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1588227260, now seen corresponding path program 1 times [2022-12-14 10:53:21,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:21,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293961273] [2022-12-14 10:53:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:21,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:53:26,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:26,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293961273] [2022-12-14 10:53:26,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293961273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:53:26,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:53:26,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-12-14 10:53:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181468609] [2022-12-14 10:53:26,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:53:26,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 10:53:26,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:53:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 10:53:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 10:53:26,018 INFO L87 Difference]: Start difference. First operand 4295 states and 5468 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:39,713 INFO L93 Difference]: Finished difference Result 11086 states and 14995 transitions. [2022-12-14 10:53:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 10:53:39,714 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:53:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:39,729 INFO L225 Difference]: With dead ends: 11086 [2022-12-14 10:53:39,729 INFO L226 Difference]: Without dead ends: 10345 [2022-12-14 10:53:39,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=690, Invalid=3866, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 10:53:39,732 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 3180 mSDsluCounter, 8030 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 8485 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:39,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 8485 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-14 10:53:39,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10345 states. [2022-12-14 10:53:40,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10345 to 4844. [2022-12-14 10:53:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 4839 states have (on average 1.2858028518288902) internal successors, (6222), 4843 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 6222 transitions. [2022-12-14 10:53:40,891 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 6222 transitions. Word has length 134 [2022-12-14 10:53:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:40,891 INFO L495 AbstractCegarLoop]: Abstraction has 4844 states and 6222 transitions. [2022-12-14 10:53:40,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:40,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 6222 transitions. [2022-12-14 10:53:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:53:40,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:40,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:53:40,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:53:40,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:53:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1370779242, now seen corresponding path program 1 times [2022-12-14 10:53:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:40,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892522304] [2022-12-14 10:53:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:40,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:53:41,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:41,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892522304] [2022-12-14 10:53:41,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892522304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:53:41,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:53:41,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:53:41,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086754772] [2022-12-14 10:53:41,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:53:41,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:53:41,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:53:41,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:53:41,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:53:41,079 INFO L87 Difference]: Start difference. First operand 4844 states and 6222 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:42,526 INFO L93 Difference]: Finished difference Result 8341 states and 10714 transitions. [2022-12-14 10:53:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:53:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:53:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:42,532 INFO L225 Difference]: With dead ends: 8341 [2022-12-14 10:53:42,532 INFO L226 Difference]: Without dead ends: 4410 [2022-12-14 10:53:42,534 INFO L412 NwaCegarLoop]: 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 [2022-12-14 10:53:42,535 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 2307 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:42,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 746 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:53:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2022-12-14 10:53:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 3800. [2022-12-14 10:53:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3795 states have (on average 1.2484848484848485) internal successors, (4738), 3799 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 4738 transitions. [2022-12-14 10:53:43,518 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 4738 transitions. Word has length 134 [2022-12-14 10:53:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:43,519 INFO L495 AbstractCegarLoop]: Abstraction has 3800 states and 4738 transitions. [2022-12-14 10:53:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 4738 transitions. [2022-12-14 10:53:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:53:43,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:43,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:53:43,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:53:43,521 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:53:43,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:43,521 INFO L85 PathProgramCache]: Analyzing trace with hash -48059187, now seen corresponding path program 1 times [2022-12-14 10:53:43,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:43,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656690691] [2022-12-14 10:53:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:43,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:53:43,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:43,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656690691] [2022-12-14 10:53:43,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656690691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:53:43,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:53:43,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:53:43,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022040297] [2022-12-14 10:53:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:53:43,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:53:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:53:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:53:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:53:43,865 INFO L87 Difference]: Start difference. First operand 3800 states and 4738 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:45,496 INFO L93 Difference]: Finished difference Result 8590 states and 10798 transitions. [2022-12-14 10:53:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:53:45,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:53:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:45,502 INFO L225 Difference]: With dead ends: 8590 [2022-12-14 10:53:45,503 INFO L226 Difference]: Without dead ends: 5049 [2022-12-14 10:53:45,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:53:45,505 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 2432 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:45,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 619 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:53:45,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5049 states. [2022-12-14 10:53:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5049 to 3831. [2022-12-14 10:53:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3831 states, 3826 states have (on average 1.2004704652378464) internal successors, (4593), 3830 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3831 states to 3831 states and 4593 transitions. [2022-12-14 10:53:46,369 INFO L78 Accepts]: Start accepts. Automaton has 3831 states and 4593 transitions. Word has length 134 [2022-12-14 10:53:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:46,369 INFO L495 AbstractCegarLoop]: Abstraction has 3831 states and 4593 transitions. [2022-12-14 10:53:46,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3831 states and 4593 transitions. [2022-12-14 10:53:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:53:46,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:46,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:53:46,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:53:46,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:53:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1653205795, now seen corresponding path program 1 times [2022-12-14 10:53:46,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:46,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207177506] [2022-12-14 10:53:46,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:46,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:53:46,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:46,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207177506] [2022-12-14 10:53:46,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207177506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:53:46,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:53:46,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:53:46,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988865882] [2022-12-14 10:53:46,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:53:46,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:53:46,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:53:46,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:53:46,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:53:46,690 INFO L87 Difference]: Start difference. First operand 3831 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:47,722 INFO L93 Difference]: Finished difference Result 4459 states and 5328 transitions. [2022-12-14 10:53:47,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:53:47,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:53:47,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:47,726 INFO L225 Difference]: With dead ends: 4459 [2022-12-14 10:53:47,726 INFO L226 Difference]: Without dead ends: 3845 [2022-12-14 10:53:47,727 INFO L412 NwaCegarLoop]: 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 [2022-12-14 10:53:47,727 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 997 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:47,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 818 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:53:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2022-12-14 10:53:48,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3823. [2022-12-14 10:53:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 3818 states have (on average 1.1972236773179674) internal successors, (4571), 3822 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 4571 transitions. [2022-12-14 10:53:48,722 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 4571 transitions. Word has length 134 [2022-12-14 10:53:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:48,722 INFO L495 AbstractCegarLoop]: Abstraction has 3823 states and 4571 transitions. [2022-12-14 10:53:48,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 4571 transitions. [2022-12-14 10:53:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:53:48,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:48,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:53:48,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:53:48,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:53:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1678052637, now seen corresponding path program 1 times [2022-12-14 10:53:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:48,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937485554] [2022-12-14 10:53:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:48,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:53:49,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:49,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937485554] [2022-12-14 10:53:49,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937485554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:53:49,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:53:49,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:53:49,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508147311] [2022-12-14 10:53:49,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:53:49,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:53:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:53:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:53:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:53:49,024 INFO L87 Difference]: Start difference. First operand 3823 states and 4571 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:49,964 INFO L93 Difference]: Finished difference Result 5749 states and 6956 transitions. [2022-12-14 10:53:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:53:49,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:53:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:49,969 INFO L225 Difference]: With dead ends: 5749 [2022-12-14 10:53:49,969 INFO L226 Difference]: Without dead ends: 3447 [2022-12-14 10:53:49,970 INFO L412 NwaCegarLoop]: 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 [2022-12-14 10:53:49,970 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 757 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:49,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 676 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:53:49,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2022-12-14 10:53:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 3287. [2022-12-14 10:53:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3282 states have (on average 1.1931748933577087) internal successors, (3916), 3286 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 3916 transitions. [2022-12-14 10:53:50,750 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 3916 transitions. Word has length 134 [2022-12-14 10:53:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:50,750 INFO L495 AbstractCegarLoop]: Abstraction has 3287 states and 3916 transitions. [2022-12-14 10:53:50,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 3916 transitions. [2022-12-14 10:53:50,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:53:50,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:50,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:53:50,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:53:50,752 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:53:50,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash 950523407, now seen corresponding path program 1 times [2022-12-14 10:53:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:50,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739198237] [2022-12-14 10:53:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:53:54,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:54,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739198237] [2022-12-14 10:53:54,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739198237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:53:54,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:53:54,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-12-14 10:53:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377180823] [2022-12-14 10:53:54,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:53:54,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-14 10:53:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:53:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-14 10:53:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-12-14 10:53:54,154 INFO L87 Difference]: Start difference. First operand 3287 states and 3916 transitions. Second operand has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:05,365 INFO L93 Difference]: Finished difference Result 7258 states and 9154 transitions. [2022-12-14 10:54:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 10:54:05,366 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:54:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:05,371 INFO L225 Difference]: With dead ends: 7258 [2022-12-14 10:54:05,371 INFO L226 Difference]: Without dead ends: 6689 [2022-12-14 10:54:05,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=606, Invalid=3300, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 10:54:05,372 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 2425 mSDsluCounter, 11702 mSDsCounter, 0 mSdLazyCounter, 4331 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2425 SdHoareTripleChecker+Valid, 12431 SdHoareTripleChecker+Invalid, 4382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 4331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:05,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2425 Valid, 12431 Invalid, 4382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 4331 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-14 10:54:05,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6689 states. [2022-12-14 10:54:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6689 to 4056. [2022-12-14 10:54:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 4051 states have (on average 1.198963218958282) internal successors, (4857), 4055 states have internal predecessors, (4857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 4857 transitions. [2022-12-14 10:54:06,458 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 4857 transitions. Word has length 134 [2022-12-14 10:54:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:06,459 INFO L495 AbstractCegarLoop]: Abstraction has 4056 states and 4857 transitions. [2022-12-14 10:54:06,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 4857 transitions. [2022-12-14 10:54:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:54:06,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:06,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:06,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:54:06,462 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:54:06,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:06,463 INFO L85 PathProgramCache]: Analyzing trace with hash -197367512, now seen corresponding path program 1 times [2022-12-14 10:54:06,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:06,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656703372] [2022-12-14 10:54:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:06,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:54:14,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:14,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656703372] [2022-12-14 10:54:14,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656703372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:14,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:14,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-12-14 10:54:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337269478] [2022-12-14 10:54:14,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:14,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 10:54:14,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:14,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 10:54:14,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 10:54:14,424 INFO L87 Difference]: Start difference. First operand 4056 states and 4857 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 35 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:25,950 INFO L93 Difference]: Finished difference Result 8623 states and 10806 transitions. [2022-12-14 10:54:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-14 10:54:25,951 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 35 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:54:25,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:25,957 INFO L225 Difference]: With dead ends: 8623 [2022-12-14 10:54:25,957 INFO L226 Difference]: Without dead ends: 7642 [2022-12-14 10:54:25,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=834, Invalid=4136, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 10:54:25,959 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 2091 mSDsluCounter, 7075 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 7573 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:25,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 7573 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-14 10:54:25,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7642 states. [2022-12-14 10:54:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7642 to 4420. [2022-12-14 10:54:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4415 states have (on average 1.1909399773499434) internal successors, (5258), 4419 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5258 transitions. [2022-12-14 10:54:27,157 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5258 transitions. Word has length 134 [2022-12-14 10:54:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:27,158 INFO L495 AbstractCegarLoop]: Abstraction has 4420 states and 5258 transitions. [2022-12-14 10:54:27,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 35 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5258 transitions. [2022-12-14 10:54:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 10:54:27,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:27,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:27,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 10:54:27,160 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:54:27,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:27,161 INFO L85 PathProgramCache]: Analyzing trace with hash 201205628, now seen corresponding path program 1 times [2022-12-14 10:54:27,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:27,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847190811] [2022-12-14 10:54:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:27,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:54:35,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847190811] [2022-12-14 10:54:35,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847190811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:35,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:35,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-12-14 10:54:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490231128] [2022-12-14 10:54:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 10:54:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 10:54:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 10:54:35,550 INFO L87 Difference]: Start difference. First operand 4420 states and 5258 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:51,362 INFO L93 Difference]: Finished difference Result 8014 states and 10089 transitions. [2022-12-14 10:54:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 10:54:51,363 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-14 10:54:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:51,368 INFO L225 Difference]: With dead ends: 8014 [2022-12-14 10:54:51,369 INFO L226 Difference]: Without dead ends: 7520 [2022-12-14 10:54:51,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=687, Invalid=4005, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 10:54:51,371 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 2109 mSDsluCounter, 8832 mSDsCounter, 0 mSdLazyCounter, 3924 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 9301 SdHoareTripleChecker+Invalid, 3940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:51,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 9301 Invalid, 3940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3924 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-12-14 10:54:51,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2022-12-14 10:54:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 4421. [2022-12-14 10:54:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4421 states, 4416 states have (on average 1.1906702898550725) internal successors, (5258), 4420 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 5258 transitions. [2022-12-14 10:54:52,618 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 5258 transitions. Word has length 134 [2022-12-14 10:54:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:52,619 INFO L495 AbstractCegarLoop]: Abstraction has 4421 states and 5258 transitions. [2022-12-14 10:54:52,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 5258 transitions. [2022-12-14 10:54:52,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 10:54:52,627 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:52,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:52,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 10:54:52,627 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:54:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:52,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1288674058, now seen corresponding path program 1 times [2022-12-14 10:54:52,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:52,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859244709] [2022-12-14 10:54:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:52,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:54:52,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:52,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859244709] [2022-12-14 10:54:52,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859244709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:52,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:52,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:54:52,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39844807] [2022-12-14 10:54:52,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:52,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:54:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:54:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:54:52,676 INFO L87 Difference]: Start difference. First operand 4421 states and 5258 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) [2022-12-14 10:54:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:54,210 INFO L93 Difference]: Finished difference Result 8112 states and 9742 transitions. [2022-12-14 10:54:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:54:54,211 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 [2022-12-14 10:54:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:54,214 INFO L225 Difference]: With dead ends: 8112 [2022-12-14 10:54:54,214 INFO L226 Difference]: Without dead ends: 4736 [2022-12-14 10:54:54,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:54:54,217 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 267 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:54,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 359 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:54:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2022-12-14 10:54:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 4332. [2022-12-14 10:54:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4327 states have (on average 1.1837300670210307) internal successors, (5122), 4331 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:55,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 5122 transitions. [2022-12-14 10:54:55,474 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 5122 transitions. Word has length 135 [2022-12-14 10:54:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:55,474 INFO L495 AbstractCegarLoop]: Abstraction has 4332 states and 5122 transitions. [2022-12-14 10:54:55,474 INFO L496 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) [2022-12-14 10:54:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 5122 transitions. [2022-12-14 10:54:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 10:54:55,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:55,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:55,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 10:54:55,477 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:54:55,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1582827624, now seen corresponding path program 1 times [2022-12-14 10:54:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:55,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858981311] [2022-12-14 10:54:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:55,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:54:55,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:55,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858981311] [2022-12-14 10:54:55,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858981311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:55,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:55,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:54:55,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178987185] [2022-12-14 10:54:55,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:55,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:54:55,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:55,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:54:55,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:54:55,520 INFO L87 Difference]: Start difference. First operand 4332 states and 5122 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) [2022-12-14 10:54:56,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:56,795 INFO L93 Difference]: Finished difference Result 6544 states and 7760 transitions. [2022-12-14 10:54:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:54:56,796 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 [2022-12-14 10:54:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:56,799 INFO L225 Difference]: With dead ends: 6544 [2022-12-14 10:54:56,799 INFO L226 Difference]: Without dead ends: 4190 [2022-12-14 10:54:56,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:54:56,801 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 257 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:56,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 286 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:54:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2022-12-14 10:54:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4164. [2022-12-14 10:54:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 4159 states have (on average 1.180091368117336) internal successors, (4908), 4163 states have internal predecessors, (4908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 4908 transitions. [2022-12-14 10:54:57,946 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 4908 transitions. Word has length 135 [2022-12-14 10:54:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:57,947 INFO L495 AbstractCegarLoop]: Abstraction has 4164 states and 4908 transitions. [2022-12-14 10:54:57,947 INFO L496 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) [2022-12-14 10:54:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 4908 transitions. [2022-12-14 10:54:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 10:54:57,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:57,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:57,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 10:54:57,949 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:54:57,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash 887003541, now seen corresponding path program 1 times [2022-12-14 10:54:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:57,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686371345] [2022-12-14 10:54:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:54:57,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:57,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686371345] [2022-12-14 10:54:57,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686371345] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:57,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:57,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:54:57,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034988991] [2022-12-14 10:54:57,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:57,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:54:57,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:54:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:54:57,997 INFO L87 Difference]: Start difference. First operand 4164 states and 4908 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) [2022-12-14 10:54:59,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:59,427 INFO L93 Difference]: Finished difference Result 7053 states and 8389 transitions. [2022-12-14 10:54:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:54:59,428 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 [2022-12-14 10:54:59,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:59,430 INFO L225 Difference]: With dead ends: 7053 [2022-12-14 10:54:59,431 INFO L226 Difference]: Without dead ends: 4319 [2022-12-14 10:54:59,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:54:59,432 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 265 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:59,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 388 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:54:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2022-12-14 10:55:00,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 3972. [2022-12-14 10:55:00,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3967 states have (on average 1.1779682379631964) internal successors, (4673), 3971 states have internal predecessors, (4673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 4673 transitions. [2022-12-14 10:55:00,678 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 4673 transitions. Word has length 135 [2022-12-14 10:55:00,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:00,679 INFO L495 AbstractCegarLoop]: Abstraction has 3972 states and 4673 transitions. [2022-12-14 10:55:00,679 INFO L496 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) [2022-12-14 10:55:00,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 4673 transitions. [2022-12-14 10:55:00,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 10:55:00,681 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:00,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:00,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 10:55:00,681 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:55:00,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:00,681 INFO L85 PathProgramCache]: Analyzing trace with hash 488712129, now seen corresponding path program 1 times [2022-12-14 10:55:00,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:00,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732293679] [2022-12-14 10:55:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:00,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:00,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732293679] [2022-12-14 10:55:00,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732293679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:00,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:00,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:00,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761898079] [2022-12-14 10:55:00,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:00,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:00,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:00,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:00,719 INFO L87 Difference]: Start difference. First operand 3972 states and 4673 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) [2022-12-14 10:55:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:01,977 INFO L93 Difference]: Finished difference Result 6390 states and 7566 transitions. [2022-12-14 10:55:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:01,978 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 [2022-12-14 10:55:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:01,981 INFO L225 Difference]: With dead ends: 6390 [2022-12-14 10:55:01,981 INFO L226 Difference]: Without dead ends: 3865 [2022-12-14 10:55:01,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:01,982 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 264 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:01,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 317 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:01,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2022-12-14 10:55:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3705. [2022-12-14 10:55:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 3700 states have (on average 1.1751351351351351) internal successors, (4348), 3704 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 4348 transitions. [2022-12-14 10:55:03,016 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 4348 transitions. Word has length 135 [2022-12-14 10:55:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:03,016 INFO L495 AbstractCegarLoop]: Abstraction has 3705 states and 4348 transitions. [2022-12-14 10:55:03,016 INFO L496 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) [2022-12-14 10:55:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 4348 transitions. [2022-12-14 10:55:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 10:55:03,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:03,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:03,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 10:55:03,018 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:55:03,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:03,018 INFO L85 PathProgramCache]: Analyzing trace with hash 228819144, now seen corresponding path program 1 times [2022-12-14 10:55:03,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:03,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818883292] [2022-12-14 10:55:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:03,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:03,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:03,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818883292] [2022-12-14 10:55:03,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818883292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:03,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:03,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:03,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118846762] [2022-12-14 10:55:03,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:03,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:03,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:03,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:03,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:03,069 INFO L87 Difference]: Start difference. First operand 3705 states and 4348 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) [2022-12-14 10:55:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:04,063 INFO L93 Difference]: Finished difference Result 5492 states and 6460 transitions. [2022-12-14 10:55:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:04,063 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 [2022-12-14 10:55:04,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:04,066 INFO L225 Difference]: With dead ends: 5492 [2022-12-14 10:55:04,066 INFO L226 Difference]: Without dead ends: 3200 [2022-12-14 10:55:04,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:04,068 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 237 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:04,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 284 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2022-12-14 10:55:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3176. [2022-12-14 10:55:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 3171 states have (on average 1.1712393566698203) internal successors, (3714), 3175 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 3714 transitions. [2022-12-14 10:55:04,958 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 3714 transitions. Word has length 135 [2022-12-14 10:55:04,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:04,958 INFO L495 AbstractCegarLoop]: Abstraction has 3176 states and 3714 transitions. [2022-12-14 10:55:04,958 INFO L496 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) [2022-12-14 10:55:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 3714 transitions. [2022-12-14 10:55:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 10:55:04,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:04,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:04,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 10:55:04,960 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:55:04,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:04,960 INFO L85 PathProgramCache]: Analyzing trace with hash -112278551, now seen corresponding path program 1 times [2022-12-14 10:55:04,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:04,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740242381] [2022-12-14 10:55:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:04,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:05,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:05,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740242381] [2022-12-14 10:55:05,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740242381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:05,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:05,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:05,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782047718] [2022-12-14 10:55:05,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:05,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:05,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:05,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:05,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:05,002 INFO L87 Difference]: Start difference. First operand 3176 states and 3714 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) [2022-12-14 10:55:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:06,099 INFO L93 Difference]: Finished difference Result 5935 states and 6996 transitions. [2022-12-14 10:55:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:06,099 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 [2022-12-14 10:55:06,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:06,102 INFO L225 Difference]: With dead ends: 5935 [2022-12-14 10:55:06,102 INFO L226 Difference]: Without dead ends: 3355 [2022-12-14 10:55:06,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:06,104 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 245 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:06,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 346 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2022-12-14 10:55:06,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 3088. [2022-12-14 10:55:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3083 states have (on average 1.1663963671748296) internal successors, (3596), 3087 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 3596 transitions. [2022-12-14 10:55:06,963 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 3596 transitions. Word has length 135 [2022-12-14 10:55:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:06,964 INFO L495 AbstractCegarLoop]: Abstraction has 3088 states and 3596 transitions. [2022-12-14 10:55:06,964 INFO L496 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) [2022-12-14 10:55:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 3596 transitions. [2022-12-14 10:55:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-14 10:55:06,965 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:06,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:06,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 10:55:06,965 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:55:06,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1724534635, now seen corresponding path program 1 times [2022-12-14 10:55:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:06,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258290125] [2022-12-14 10:55:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:06,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:07,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:07,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258290125] [2022-12-14 10:55:07,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258290125] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:07,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:07,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:07,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034187184] [2022-12-14 10:55:07,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:07,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:07,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:07,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:07,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:07,013 INFO L87 Difference]: Start difference. First operand 3088 states and 3596 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:08,168 INFO L93 Difference]: Finished difference Result 4740 states and 5560 transitions. [2022-12-14 10:55:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:08,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-12-14 10:55:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:08,171 INFO L225 Difference]: With dead ends: 4740 [2022-12-14 10:55:08,171 INFO L226 Difference]: Without dead ends: 3957 [2022-12-14 10:55:08,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:08,173 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 204 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:08,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 594 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2022-12-14 10:55:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3935. [2022-12-14 10:55:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3935 states, 3930 states have (on average 1.1661577608142493) internal successors, (4583), 3934 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3935 states to 3935 states and 4583 transitions. [2022-12-14 10:55:09,271 INFO L78 Accepts]: Start accepts. Automaton has 3935 states and 4583 transitions. Word has length 137 [2022-12-14 10:55:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:09,271 INFO L495 AbstractCegarLoop]: Abstraction has 3935 states and 4583 transitions. [2022-12-14 10:55:09,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3935 states and 4583 transitions. [2022-12-14 10:55:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-14 10:55:09,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:09,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:09,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 10:55:09,273 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:55:09,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash 676626001, now seen corresponding path program 1 times [2022-12-14 10:55:09,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:09,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498327813] [2022-12-14 10:55:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:09,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:09,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498327813] [2022-12-14 10:55:09,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498327813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:09,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:09,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:09,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356145478] [2022-12-14 10:55:09,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:09,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:09,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:09,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:09,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:09,321 INFO L87 Difference]: Start difference. First operand 3935 states and 4583 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:10,519 INFO L93 Difference]: Finished difference Result 4588 states and 5341 transitions. [2022-12-14 10:55:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:10,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-12-14 10:55:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:10,523 INFO L225 Difference]: With dead ends: 4588 [2022-12-14 10:55:10,523 INFO L226 Difference]: Without dead ends: 3861 [2022-12-14 10:55:10,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:10,524 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 217 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:10,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 784 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2022-12-14 10:55:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3839. [2022-12-14 10:55:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3834 states have (on average 1.1604068857589984) internal successors, (4449), 3838 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 4449 transitions. [2022-12-14 10:55:11,734 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 4449 transitions. Word has length 137 [2022-12-14 10:55:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:11,735 INFO L495 AbstractCegarLoop]: Abstraction has 3839 states and 4449 transitions. [2022-12-14 10:55:11,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 4449 transitions. [2022-12-14 10:55:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:55:11,736 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:11,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:11,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 10:55:11,737 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:55:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1189203663, now seen corresponding path program 1 times [2022-12-14 10:55:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:11,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919008062] [2022-12-14 10:55:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:19,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:19,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919008062] [2022-12-14 10:55:19,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919008062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:19,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:19,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-12-14 10:55:19,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61894454] [2022-12-14 10:55:19,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:19,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 10:55:19,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:19,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 10:55:19,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 10:55:19,516 INFO L87 Difference]: Start difference. First operand 3839 states and 4449 transitions. Second operand has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:39,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:39,138 INFO L93 Difference]: Finished difference Result 6872 states and 8388 transitions. [2022-12-14 10:55:39,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-14 10:55:39,139 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:55:39,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:39,144 INFO L225 Difference]: With dead ends: 6872 [2022-12-14 10:55:39,144 INFO L226 Difference]: Without dead ends: 6860 [2022-12-14 10:55:39,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=842, Invalid=4414, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 10:55:39,146 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1757 mSDsluCounter, 12648 mSDsCounter, 0 mSdLazyCounter, 5842 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 13251 SdHoareTripleChecker+Invalid, 5859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:39,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 13251 Invalid, 5859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 5842 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-12-14 10:55:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6860 states. [2022-12-14 10:55:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6860 to 3839. [2022-12-14 10:55:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3834 states have (on average 1.1601460615545123) internal successors, (4448), 3838 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) [2022-12-14 10:55:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 4448 transitions. [2022-12-14 10:55:40,310 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 4448 transitions. Word has length 140 [2022-12-14 10:55:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:40,310 INFO L495 AbstractCegarLoop]: Abstraction has 3839 states and 4448 transitions. [2022-12-14 10:55:40,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:55:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 4448 transitions. [2022-12-14 10:55:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:55:40,312 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:40,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:40,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 10:55:40,313 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:55:40,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:40,313 INFO L85 PathProgramCache]: Analyzing trace with hash 41312744, now seen corresponding path program 1 times [2022-12-14 10:55:40,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:40,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216123853] [2022-12-14 10:55:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:40,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:50,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:50,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216123853] [2022-12-14 10:55:50,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216123853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:50,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:50,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-12-14 10:55:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614265125] [2022-12-14 10:55:50,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:50,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 10:55:50,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 10:55:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 10:55:50,212 INFO L87 Difference]: Start difference. First operand 3839 states and 4448 transitions. Second operand has 37 states, 37 states have (on average 3.7837837837837838) internal successors, (140), 36 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:56:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:56:04,565 INFO L93 Difference]: Finished difference Result 5004 states and 5962 transitions. [2022-12-14 10:56:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-14 10:56:04,566 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.7837837837837838) internal successors, (140), 36 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:56:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:56:04,570 INFO L225 Difference]: With dead ends: 5004 [2022-12-14 10:56:04,570 INFO L226 Difference]: Without dead ends: 5000 [2022-12-14 10:56:04,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=684, Invalid=3606, Unknown=0, NotChecked=0, Total=4290 [2022-12-14 10:56:04,571 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1525 mSDsluCounter, 7895 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 8362 SdHoareTripleChecker+Invalid, 3926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:56:04,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 8362 Invalid, 3926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-14 10:56:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5000 states. [2022-12-14 10:56:05,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5000 to 3839. [2022-12-14 10:56:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3834 states have (on average 1.1598852373500261) internal successors, (4447), 3838 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:56:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 4447 transitions. [2022-12-14 10:56:05,769 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 4447 transitions. Word has length 140 [2022-12-14 10:56:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:56:05,770 INFO L495 AbstractCegarLoop]: Abstraction has 3839 states and 4447 transitions. [2022-12-14 10:56:05,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.7837837837837838) internal successors, (140), 36 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:56:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 4447 transitions. [2022-12-14 10:56:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:56:05,771 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:56:05,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:56:05,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 10:56:05,772 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:56:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:56:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash 439885884, now seen corresponding path program 1 times [2022-12-14 10:56:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:56:05,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414347854] [2022-12-14 10:56:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:56:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:56:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:56:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:56:13,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:56:13,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414347854] [2022-12-14 10:56:13,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414347854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:56:13,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:56:13,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-12-14 10:56:13,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547864422] [2022-12-14 10:56:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:56:13,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 10:56:13,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:56:13,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 10:56:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 10:56:13,206 INFO L87 Difference]: Start difference. First operand 3839 states and 4447 transitions. Second operand has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:56:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:56:31,931 INFO L93 Difference]: Finished difference Result 9058 states and 11231 transitions. [2022-12-14 10:56:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 10:56:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:56:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:56:31,939 INFO L225 Difference]: With dead ends: 9058 [2022-12-14 10:56:31,939 INFO L226 Difference]: Without dead ends: 9054 [2022-12-14 10:56:31,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=858, Invalid=4994, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 10:56:31,941 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 1715 mSDsluCounter, 12888 mSDsCounter, 0 mSdLazyCounter, 5675 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 13534 SdHoareTripleChecker+Invalid, 5726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 5675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:56:31,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 13534 Invalid, 5726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 5675 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-14 10:56:31,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9054 states. [2022-12-14 10:56:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9054 to 3839. [2022-12-14 10:56:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3834 states have (on average 1.15962441314554) internal successors, (4446), 3838 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:56:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 4446 transitions. [2022-12-14 10:56:33,243 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 4446 transitions. Word has length 140 [2022-12-14 10:56:33,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:56:33,244 INFO L495 AbstractCegarLoop]: Abstraction has 3839 states and 4446 transitions. [2022-12-14 10:56:33,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:56:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 4446 transitions. [2022-12-14 10:56:33,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:56:33,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:56:33,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:56:33,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 10:56:33,246 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:56:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:56:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash 846871639, now seen corresponding path program 1 times [2022-12-14 10:56:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:56:33,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508654969] [2022-12-14 10:56:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:56:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:56:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:56:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:56:37,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:56:37,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508654969] [2022-12-14 10:56:37,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508654969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:56:37,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:56:37,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-14 10:56:37,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146156377] [2022-12-14 10:56:37,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:56:37,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 10:56:37,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:56:37,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 10:56:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-12-14 10:56:37,981 INFO L87 Difference]: Start difference. First operand 3839 states and 4446 transitions. Second operand has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:56:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:56:50,786 INFO L93 Difference]: Finished difference Result 7050 states and 8589 transitions. [2022-12-14 10:56:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-14 10:56:50,787 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:56:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:56:50,792 INFO L225 Difference]: With dead ends: 7050 [2022-12-14 10:56:50,792 INFO L226 Difference]: Without dead ends: 6900 [2022-12-14 10:56:50,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=723, Invalid=3969, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 10:56:50,794 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 2234 mSDsluCounter, 10306 mSDsCounter, 0 mSdLazyCounter, 4832 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 10926 SdHoareTripleChecker+Invalid, 4884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:56:50,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 10926 Invalid, 4884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4832 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-14 10:56:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6900 states. [2022-12-14 10:56:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6900 to 3929. [2022-12-14 10:56:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3924 states have (on average 1.1625891946992863) internal successors, (4562), 3928 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:56:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 4562 transitions. [2022-12-14 10:56:52,199 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 4562 transitions. Word has length 140 [2022-12-14 10:56:52,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:56:52,199 INFO L495 AbstractCegarLoop]: Abstraction has 3929 states and 4562 transitions. [2022-12-14 10:56:52,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:56:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 4562 transitions. [2022-12-14 10:56:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:56:52,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:56:52,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:56:52,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 10:56:52,201 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:56:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:56:52,202 INFO L85 PathProgramCache]: Analyzing trace with hash -301019280, now seen corresponding path program 1 times [2022-12-14 10:56:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:56:52,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897922384] [2022-12-14 10:56:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:56:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:56:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:00,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:00,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897922384] [2022-12-14 10:57:00,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897922384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:00,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:00,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-12-14 10:57:00,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048330409] [2022-12-14 10:57:00,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:00,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 10:57:00,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:00,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 10:57:00,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 10:57:00,237 INFO L87 Difference]: Start difference. First operand 3929 states and 4562 transitions. Second operand has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:18,513 INFO L93 Difference]: Finished difference Result 9133 states and 11336 transitions. [2022-12-14 10:57:18,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 10:57:18,514 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:57:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:18,521 INFO L225 Difference]: With dead ends: 9133 [2022-12-14 10:57:18,521 INFO L226 Difference]: Without dead ends: 9082 [2022-12-14 10:57:18,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=721, Invalid=3971, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 10:57:18,523 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 2825 mSDsluCounter, 11373 mSDsCounter, 0 mSdLazyCounter, 5211 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 12049 SdHoareTripleChecker+Invalid, 5293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 5211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:18,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2825 Valid, 12049 Invalid, 5293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 5211 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-12-14 10:57:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9082 states. [2022-12-14 10:57:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9082 to 3839. [2022-12-14 10:57:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3834 states have (on average 1.1585811163275952) internal successors, (4442), 3838 states have internal predecessors, (4442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 4442 transitions. [2022-12-14 10:57:19,934 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 4442 transitions. Word has length 140 [2022-12-14 10:57:19,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:19,934 INFO L495 AbstractCegarLoop]: Abstraction has 3839 states and 4442 transitions. [2022-12-14 10:57:19,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:19,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 4442 transitions. [2022-12-14 10:57:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:57:19,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:19,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:19,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 10:57:19,936 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:57:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:19,936 INFO L85 PathProgramCache]: Analyzing trace with hash 97553860, now seen corresponding path program 1 times [2022-12-14 10:57:19,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:19,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079320918] [2022-12-14 10:57:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:19,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:23,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:23,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079320918] [2022-12-14 10:57:23,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079320918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:23,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:23,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-14 10:57:23,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517089224] [2022-12-14 10:57:23,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:23,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 10:57:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 10:57:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2022-12-14 10:57:23,644 INFO L87 Difference]: Start difference. First operand 3839 states and 4442 transitions. Second operand has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 26 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:33,055 INFO L93 Difference]: Finished difference Result 7222 states and 8838 transitions. [2022-12-14 10:57:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-14 10:57:33,056 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 26 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:57:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:33,062 INFO L225 Difference]: With dead ends: 7222 [2022-12-14 10:57:33,062 INFO L226 Difference]: Without dead ends: 7214 [2022-12-14 10:57:33,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=549, Invalid=2313, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 10:57:33,063 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 1354 mSDsluCounter, 8118 mSDsCounter, 0 mSdLazyCounter, 2953 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 8760 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:33,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 8760 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2953 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 10:57:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7214 states. [2022-12-14 10:57:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7214 to 3843. [2022-12-14 10:57:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3843 states, 3838 states have (on average 1.1576341844710787) internal successors, (4443), 3842 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:34,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3843 states to 3843 states and 4443 transitions. [2022-12-14 10:57:34,503 INFO L78 Accepts]: Start accepts. Automaton has 3843 states and 4443 transitions. Word has length 140 [2022-12-14 10:57:34,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:34,504 INFO L495 AbstractCegarLoop]: Abstraction has 3843 states and 4443 transitions. [2022-12-14 10:57:34,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 26 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3843 states and 4443 transitions. [2022-12-14 10:57:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:57:34,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:34,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:34,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 10:57:34,506 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:57:34,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:34,506 INFO L85 PathProgramCache]: Analyzing trace with hash -296594893, now seen corresponding path program 1 times [2022-12-14 10:57:34,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:34,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717157382] [2022-12-14 10:57:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:34,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:40,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:40,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717157382] [2022-12-14 10:57:40,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717157382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:40,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:40,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-12-14 10:57:40,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713789148] [2022-12-14 10:57:40,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:40,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 10:57:40,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:40,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 10:57:40,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 10:57:40,614 INFO L87 Difference]: Start difference. First operand 3843 states and 4443 transitions. Second operand has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:56,081 INFO L93 Difference]: Finished difference Result 6921 states and 8426 transitions. [2022-12-14 10:57:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 10:57:56,082 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:57:56,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:56,086 INFO L225 Difference]: With dead ends: 6921 [2022-12-14 10:57:56,086 INFO L226 Difference]: Without dead ends: 6768 [2022-12-14 10:57:56,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=720, Invalid=3836, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 10:57:56,088 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1974 mSDsluCounter, 7630 mSDsCounter, 0 mSdLazyCounter, 3770 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 8065 SdHoareTripleChecker+Invalid, 3785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:56,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 8065 Invalid, 3785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3770 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 10:57:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2022-12-14 10:57:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 3843. [2022-12-14 10:57:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3843 states, 3838 states have (on average 1.1571130797290254) internal successors, (4441), 3842 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) [2022-12-14 10:57:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3843 states to 3843 states and 4441 transitions. [2022-12-14 10:57:57,575 INFO L78 Accepts]: Start accepts. Automaton has 3843 states and 4441 transitions. Word has length 140 [2022-12-14 10:57:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:57,576 INFO L495 AbstractCegarLoop]: Abstraction has 3843 states and 4441 transitions. [2022-12-14 10:57:57,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3843 states and 4441 transitions. [2022-12-14 10:57:57,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:57:57,577 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:57,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:57,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 10:57:57,578 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:57:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:57,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1444485812, now seen corresponding path program 1 times [2022-12-14 10:57:57,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:57,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067550351] [2022-12-14 10:57:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:57,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:59,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:59,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067550351] [2022-12-14 10:57:59,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067550351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:59,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:59,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 10:57:59,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067539058] [2022-12-14 10:57:59,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:59,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 10:57:59,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 10:57:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:57:59,553 INFO L87 Difference]: Start difference. First operand 3843 states and 4441 transitions. Second operand has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 21 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:58:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:58:06,110 INFO L93 Difference]: Finished difference Result 7697 states and 9396 transitions. [2022-12-14 10:58:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 10:58:06,111 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 21 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:58:06,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:58:06,116 INFO L225 Difference]: With dead ends: 7697 [2022-12-14 10:58:06,116 INFO L226 Difference]: Without dead ends: 7352 [2022-12-14 10:58:06,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=300, Invalid=1506, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 10:58:06,118 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1343 mSDsluCounter, 5102 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 5603 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:58:06,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 5603 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 10:58:06,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2022-12-14 10:58:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 3975. [2022-12-14 10:58:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3970 states have (on average 1.1571788413098236) internal successors, (4594), 3974 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:58:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 4594 transitions. [2022-12-14 10:58:07,701 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 4594 transitions. Word has length 140 [2022-12-14 10:58:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:58:07,701 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 4594 transitions. [2022-12-14 10:58:07,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 21 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:58:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 4594 transitions. [2022-12-14 10:58:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:58:07,703 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:58:07,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:58:07,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 10:58:07,703 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:58:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:58:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash -783691817, now seen corresponding path program 1 times [2022-12-14 10:58:07,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:58:07,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280682222] [2022-12-14 10:58:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:07,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:58:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:58:10,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:58:10,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280682222] [2022-12-14 10:58:10,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280682222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:58:10,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:58:10,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-12-14 10:58:10,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940651765] [2022-12-14 10:58:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:58:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-14 10:58:10,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:58:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-14 10:58:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-12-14 10:58:10,891 INFO L87 Difference]: Start difference. First operand 3975 states and 4594 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:58:23,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:58:23,039 INFO L93 Difference]: Finished difference Result 6920 states and 8357 transitions. [2022-12-14 10:58:23,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 10:58:23,040 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:58:23,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:58:23,045 INFO L225 Difference]: With dead ends: 6920 [2022-12-14 10:58:23,045 INFO L226 Difference]: Without dead ends: 6560 [2022-12-14 10:58:23,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=689, Invalid=3217, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 10:58:23,046 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 2622 mSDsluCounter, 7820 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2622 SdHoareTripleChecker+Valid, 8392 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:58:23,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2622 Valid, 8392 Invalid, 3455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 10:58:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2022-12-14 10:58:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 3911. [2022-12-14 10:58:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3906 states have (on average 1.1477214541730671) internal successors, (4483), 3910 states have internal predecessors, (4483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:58:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 4483 transitions. [2022-12-14 10:58:24,667 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 4483 transitions. Word has length 140 [2022-12-14 10:58:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:58:24,667 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 4483 transitions. [2022-12-14 10:58:24,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:58:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 4483 transitions. [2022-12-14 10:58:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:58:24,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:58:24,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:58:24,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 10:58:24,669 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:58:24,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:58:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1931582736, now seen corresponding path program 1 times [2022-12-14 10:58:24,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:58:24,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459831367] [2022-12-14 10:58:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:24,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:58:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:58:30,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:58:30,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459831367] [2022-12-14 10:58:30,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459831367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:58:30,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:58:30,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-12-14 10:58:30,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274461107] [2022-12-14 10:58:30,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:58:30,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 10:58:30,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:58:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 10:58:30,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 10:58:30,797 INFO L87 Difference]: Start difference. First operand 3911 states and 4483 transitions. Second operand has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:58:47,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:58:47,601 INFO L93 Difference]: Finished difference Result 6938 states and 8424 transitions. [2022-12-14 10:58:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 10:58:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:58:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:58:47,607 INFO L225 Difference]: With dead ends: 6938 [2022-12-14 10:58:47,607 INFO L226 Difference]: Without dead ends: 6934 [2022-12-14 10:58:47,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=761, Invalid=3931, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 10:58:47,608 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1533 mSDsluCounter, 8500 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 8950 SdHoareTripleChecker+Invalid, 4363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:58:47,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 8950 Invalid, 4363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-14 10:58:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2022-12-14 10:58:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 3911. [2022-12-14 10:58:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3906 states have (on average 1.1472094214029698) internal successors, (4481), 3910 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:58:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 4481 transitions. [2022-12-14 10:58:49,299 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 4481 transitions. Word has length 140 [2022-12-14 10:58:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:58:49,299 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 4481 transitions. [2022-12-14 10:58:49,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:58:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 4481 transitions. [2022-12-14 10:58:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:58:49,301 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:58:49,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:58:49,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-14 10:58:49,301 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:58:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:58:49,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1533009596, now seen corresponding path program 1 times [2022-12-14 10:58:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:58:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313022776] [2022-12-14 10:58:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:49,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:58:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:58:55,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:58:55,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313022776] [2022-12-14 10:58:55,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313022776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:58:55,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:58:55,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-12-14 10:58:55,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791845387] [2022-12-14 10:58:55,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:58:55,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-14 10:58:55,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:58:55,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-14 10:58:55,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1437, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 10:58:55,311 INFO L87 Difference]: Start difference. First operand 3911 states and 4481 transitions. Second operand has 40 states, 40 states have (on average 3.5) internal successors, (140), 39 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:59:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:12,096 INFO L93 Difference]: Finished difference Result 6938 states and 8422 transitions. [2022-12-14 10:59:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-14 10:59:12,097 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.5) internal successors, (140), 39 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:59:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:12,101 INFO L225 Difference]: With dead ends: 6938 [2022-12-14 10:59:12,101 INFO L226 Difference]: Without dead ends: 6934 [2022-12-14 10:59:12,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=863, Invalid=5143, Unknown=0, NotChecked=0, Total=6006 [2022-12-14 10:59:12,102 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1988 mSDsluCounter, 9343 mSDsCounter, 0 mSdLazyCounter, 4803 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 9807 SdHoareTripleChecker+Invalid, 4825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 4803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:12,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1988 Valid, 9807 Invalid, 4825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 4803 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-14 10:59:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2022-12-14 10:59:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 3911. [2022-12-14 10:59:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3906 states have (on average 1.1466973886328724) internal successors, (4479), 3910 states have internal predecessors, (4479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:59:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 4479 transitions. [2022-12-14 10:59:13,840 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 4479 transitions. Word has length 140 [2022-12-14 10:59:13,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:13,840 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 4479 transitions. [2022-12-14 10:59:13,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.5) internal successors, (140), 39 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:59:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 4479 transitions. [2022-12-14 10:59:13,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:59:13,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:13,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:59:13,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-14 10:59:13,842 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:59:13,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash -592060429, now seen corresponding path program 1 times [2022-12-14 10:59:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:13,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406252598] [2022-12-14 10:59:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:13,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:18,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:18,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406252598] [2022-12-14 10:59:18,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406252598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:18,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:18,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-14 10:59:18,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823372557] [2022-12-14 10:59:18,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:18,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 10:59:18,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 10:59:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2022-12-14 10:59:18,295 INFO L87 Difference]: Start difference. First operand 3911 states and 4479 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:59:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:26,935 INFO L93 Difference]: Finished difference Result 7117 states and 8579 transitions. [2022-12-14 10:59:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 10:59:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:59:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:26,941 INFO L225 Difference]: With dead ends: 7117 [2022-12-14 10:59:26,941 INFO L226 Difference]: Without dead ends: 6708 [2022-12-14 10:59:26,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=387, Invalid=1683, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 10:59:26,942 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 2285 mSDsluCounter, 5715 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2285 SdHoareTripleChecker+Valid, 6436 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:26,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2285 Valid, 6436 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2008 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 10:59:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2022-12-14 10:59:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 3911. [2022-12-14 10:59:28,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3906 states have (on average 1.1443932411674347) internal successors, (4470), 3910 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:59:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 4470 transitions. [2022-12-14 10:59:28,726 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 4470 transitions. Word has length 140 [2022-12-14 10:59:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:28,726 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 4470 transitions. [2022-12-14 10:59:28,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:59:28,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 4470 transitions. [2022-12-14 10:59:28,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:59:28,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:28,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:59:28,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-14 10:59:28,728 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:59:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1739951348, now seen corresponding path program 1 times [2022-12-14 10:59:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:28,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667304939] [2022-12-14 10:59:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:35,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:35,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667304939] [2022-12-14 10:59:35,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667304939] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:35,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:35,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-12-14 10:59:35,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634279349] [2022-12-14 10:59:35,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:35,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 10:59:35,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 10:59:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 10:59:35,524 INFO L87 Difference]: Start difference. First operand 3911 states and 4470 transitions. Second operand has 36 states, 36 states have (on average 3.888888888888889) internal successors, (140), 35 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:59:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:54,072 INFO L93 Difference]: Finished difference Result 6984 states and 8450 transitions. [2022-12-14 10:59:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 10:59:54,073 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.888888888888889) internal successors, (140), 35 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:59:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:54,078 INFO L225 Difference]: With dead ends: 6984 [2022-12-14 10:59:54,078 INFO L226 Difference]: Without dead ends: 6980 [2022-12-14 10:59:54,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=775, Invalid=4055, Unknown=0, NotChecked=0, Total=4830 [2022-12-14 10:59:54,079 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1511 mSDsluCounter, 7347 mSDsCounter, 0 mSdLazyCounter, 3615 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 7804 SdHoareTripleChecker+Invalid, 3632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:54,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 7804 Invalid, 3632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3615 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-14 10:59:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6980 states. [2022-12-14 10:59:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6980 to 3957. [2022-12-14 10:59:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3957 states, 3952 states have (on average 1.1427125506072875) internal successors, (4516), 3956 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:59:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3957 states to 3957 states and 4516 transitions. [2022-12-14 10:59:55,936 INFO L78 Accepts]: Start accepts. Automaton has 3957 states and 4516 transitions. Word has length 140 [2022-12-14 10:59:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:55,937 INFO L495 AbstractCegarLoop]: Abstraction has 3957 states and 4516 transitions. [2022-12-14 10:59:55,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.888888888888889) internal successors, (140), 35 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:59:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3957 states and 4516 transitions. [2022-12-14 10:59:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:59:55,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:55,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:59:55,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-14 10:59:55,938 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 10:59:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1341378208, now seen corresponding path program 1 times [2022-12-14 10:59:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:55,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396981883] [2022-12-14 10:59:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:55,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:58,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:58,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396981883] [2022-12-14 10:59:58,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396981883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:58,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:58,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-14 10:59:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955934749] [2022-12-14 10:59:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:58,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 10:59:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 10:59:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-12-14 10:59:58,614 INFO L87 Difference]: Start difference. First operand 3957 states and 4516 transitions. Second operand has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 23 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:00:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:00:07,262 INFO L93 Difference]: Finished difference Result 7361 states and 8875 transitions. [2022-12-14 11:00:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 11:00:07,264 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 23 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:00:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:00:07,268 INFO L225 Difference]: With dead ends: 7361 [2022-12-14 11:00:07,269 INFO L226 Difference]: Without dead ends: 6904 [2022-12-14 11:00:07,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=362, Invalid=1618, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 11:00:07,270 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1857 mSDsluCounter, 6842 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 7524 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:00:07,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 7524 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 11:00:07,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2022-12-14 11:00:09,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 3824. [2022-12-14 11:00:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3819 states have (on average 1.1421838177533385) internal successors, (4362), 3823 states have internal predecessors, (4362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:00:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 4362 transitions. [2022-12-14 11:00:09,130 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 4362 transitions. Word has length 140 [2022-12-14 11:00:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:00:09,130 INFO L495 AbstractCegarLoop]: Abstraction has 3824 states and 4362 transitions. [2022-12-14 11:00:09,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 23 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:00:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 4362 transitions. [2022-12-14 11:00:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 11:00:09,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:00:09,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:00:09,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-14 11:00:09,132 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:00:09,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:00:09,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1735526961, now seen corresponding path program 1 times [2022-12-14 11:00:09,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:00:09,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309499682] [2022-12-14 11:00:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:09,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:00:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:00:18,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:00:18,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309499682] [2022-12-14 11:00:18,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309499682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:00:18,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:00:18,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-12-14 11:00:18,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772721435] [2022-12-14 11:00:18,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:00:18,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 11:00:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:00:18,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 11:00:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1454, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 11:00:18,393 INFO L87 Difference]: Start difference. First operand 3824 states and 4362 transitions. Second operand has 41 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 40 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:00:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:00:36,708 INFO L93 Difference]: Finished difference Result 5986 states and 7139 transitions. [2022-12-14 11:00:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 11:00:36,709 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 40 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:00:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:00:36,712 INFO L225 Difference]: With dead ends: 5986 [2022-12-14 11:00:36,713 INFO L226 Difference]: Without dead ends: 5829 [2022-12-14 11:00:36,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=863, Invalid=4687, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 11:00:36,714 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1068 mSDsluCounter, 7030 mSDsCounter, 0 mSdLazyCounter, 4354 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 7493 SdHoareTripleChecker+Invalid, 4370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:00:36,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 7493 Invalid, 4370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4354 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-12-14 11:00:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2022-12-14 11:00:38,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 3824. [2022-12-14 11:00:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3819 states have (on average 1.1416601204503798) internal successors, (4360), 3823 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:00:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 4360 transitions. [2022-12-14 11:00:38,590 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 4360 transitions. Word has length 140 [2022-12-14 11:00:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:00:38,590 INFO L495 AbstractCegarLoop]: Abstraction has 3824 states and 4360 transitions. [2022-12-14 11:00:38,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 40 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:00:38,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 4360 transitions. [2022-12-14 11:00:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 11:00:38,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:00:38,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:00:38,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-14 11:00:38,592 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:00:38,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:00:38,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1411549416, now seen corresponding path program 1 times [2022-12-14 11:00:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:00:38,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682596324] [2022-12-14 11:00:38,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:38,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:00:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:00:46,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:00:46,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682596324] [2022-12-14 11:00:46,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682596324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:00:46,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:00:46,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-12-14 11:00:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911206416] [2022-12-14 11:00:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:00:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 11:00:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:00:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 11:00:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 11:00:46,550 INFO L87 Difference]: Start difference. First operand 3824 states and 4360 transitions. Second operand has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:04,349 INFO L93 Difference]: Finished difference Result 6851 states and 8283 transitions. [2022-12-14 11:01:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 11:01:04,350 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:01:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:04,355 INFO L225 Difference]: With dead ends: 6851 [2022-12-14 11:01:04,355 INFO L226 Difference]: Without dead ends: 6847 [2022-12-14 11:01:04,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=728, Invalid=3964, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 11:01:04,356 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1890 mSDsluCounter, 9226 mSDsCounter, 0 mSdLazyCounter, 4588 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 9661 SdHoareTripleChecker+Invalid, 4598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:04,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 9661 Invalid, 4598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 4588 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-12-14 11:01:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2022-12-14 11:01:06,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 3824. [2022-12-14 11:01:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3819 states have (on average 1.1413982717989002) internal successors, (4359), 3823 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 4359 transitions. [2022-12-14 11:01:06,281 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 4359 transitions. Word has length 140 [2022-12-14 11:01:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:06,282 INFO L495 AbstractCegarLoop]: Abstraction has 3824 states and 4359 transitions. [2022-12-14 11:01:06,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 37 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 4359 transitions. [2022-12-14 11:01:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 11:01:06,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:06,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:06,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-14 11:01:06,284 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:01:06,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:06,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1624281929, now seen corresponding path program 1 times [2022-12-14 11:01:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:01:06,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146689633] [2022-12-14 11:01:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:01:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:08,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:01:08,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146689633] [2022-12-14 11:01:08,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146689633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:08,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:08,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 11:01:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925383448] [2022-12-14 11:01:08,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:08,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 11:01:08,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:01:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 11:01:08,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-12-14 11:01:08,835 INFO L87 Difference]: Start difference. First operand 3824 states and 4359 transitions. Second operand has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 21 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:19,852 INFO L93 Difference]: Finished difference Result 9154 states and 11208 transitions. [2022-12-14 11:01:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 11:01:19,853 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 21 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:01:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:19,859 INFO L225 Difference]: With dead ends: 9154 [2022-12-14 11:01:19,860 INFO L226 Difference]: Without dead ends: 8881 [2022-12-14 11:01:19,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=364, Invalid=1706, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 11:01:19,861 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 2249 mSDsluCounter, 7536 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2249 SdHoareTripleChecker+Valid, 8301 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:19,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2249 Valid, 8301 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 11:01:19,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8881 states. [2022-12-14 11:01:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8881 to 3780. [2022-12-14 11:01:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3775 states have (on average 1.1398675496688742) internal successors, (4303), 3779 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 4303 transitions. [2022-12-14 11:01:21,842 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 4303 transitions. Word has length 140 [2022-12-14 11:01:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:21,842 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 4303 transitions. [2022-12-14 11:01:21,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 21 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 4303 transitions. [2022-12-14 11:01:21,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 11:01:21,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:21,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:21,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-14 11:01:21,844 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:01:21,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1522794448, now seen corresponding path program 1 times [2022-12-14 11:01:21,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:01:21,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909306653] [2022-12-14 11:01:21,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:21,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:01:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:25,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:01:25,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909306653] [2022-12-14 11:01:25,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909306653] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:25,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:25,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-12-14 11:01:25,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427696238] [2022-12-14 11:01:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:25,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 11:01:25,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:01:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 11:01:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-12-14 11:01:25,215 INFO L87 Difference]: Start difference. First operand 3780 states and 4303 transitions. Second operand has 25 states, 25 states have (on average 5.6) internal successors, (140), 24 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:34,998 INFO L93 Difference]: Finished difference Result 7131 states and 8625 transitions. [2022-12-14 11:01:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 11:01:34,999 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 24 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:01:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:35,004 INFO L225 Difference]: With dead ends: 7131 [2022-12-14 11:01:35,004 INFO L226 Difference]: Without dead ends: 7123 [2022-12-14 11:01:35,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=375, Invalid=1695, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 11:01:35,006 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1529 mSDsluCounter, 7079 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 7688 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:35,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 7688 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 11:01:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2022-12-14 11:01:37,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 3780. [2022-12-14 11:01:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3775 states have (on average 1.139337748344371) internal successors, (4301), 3779 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 4301 transitions. [2022-12-14 11:01:37,006 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 4301 transitions. Word has length 140 [2022-12-14 11:01:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:37,006 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 4301 transitions. [2022-12-14 11:01:37,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 24 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 4301 transitions. [2022-12-14 11:01:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 11:01:37,008 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:37,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:37,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-14 11:01:37,008 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:01:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1921367588, now seen corresponding path program 1 times [2022-12-14 11:01:37,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:01:37,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101370458] [2022-12-14 11:01:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:37,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:01:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:42,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:01:42,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101370458] [2022-12-14 11:01:42,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101370458] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:42,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:42,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-12-14 11:01:42,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183234831] [2022-12-14 11:01:42,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:42,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 11:01:42,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:01:42,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 11:01:42,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 11:01:42,987 INFO L87 Difference]: Start difference. First operand 3780 states and 4301 transitions. Second operand has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:56,890 INFO L93 Difference]: Finished difference Result 6807 states and 8221 transitions. [2022-12-14 11:01:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 11:01:56,891 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:01:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:56,895 INFO L225 Difference]: With dead ends: 6807 [2022-12-14 11:01:56,895 INFO L226 Difference]: Without dead ends: 6803 [2022-12-14 11:01:56,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=687, Invalid=3603, Unknown=0, NotChecked=0, Total=4290 [2022-12-14 11:01:56,897 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1801 mSDsluCounter, 7608 mSDsCounter, 0 mSdLazyCounter, 3726 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 8062 SdHoareTripleChecker+Invalid, 3734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:56,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1801 Valid, 8062 Invalid, 3734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3726 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-14 11:01:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6803 states. [2022-12-14 11:01:58,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6803 to 3780. [2022-12-14 11:01:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3775 states have (on average 1.1390728476821192) internal successors, (4300), 3779 states have internal predecessors, (4300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 4300 transitions. [2022-12-14 11:01:58,942 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 4300 transitions. Word has length 140 [2022-12-14 11:01:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:58,942 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 4300 transitions. [2022-12-14 11:01:58,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 4300 transitions. [2022-12-14 11:01:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 11:01:58,944 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:58,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:58,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-14 11:01:58,944 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:01:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1714425836, now seen corresponding path program 1 times [2022-12-14 11:01:58,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:01:58,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672679255] [2022-12-14 11:01:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:58,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:01:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:02:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:02:03,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:02:03,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672679255] [2022-12-14 11:02:03,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672679255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:02:03,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:02:03,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-12-14 11:02:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147281289] [2022-12-14 11:02:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:02:03,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 11:02:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:02:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 11:02:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 11:02:03,774 INFO L87 Difference]: Start difference. First operand 3780 states and 4300 transitions. Second operand has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:02:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:02:20,906 INFO L93 Difference]: Finished difference Result 6851 states and 8265 transitions. [2022-12-14 11:02:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-14 11:02:20,907 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:02:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:02:20,912 INFO L225 Difference]: With dead ends: 6851 [2022-12-14 11:02:20,912 INFO L226 Difference]: Without dead ends: 6847 [2022-12-14 11:02:20,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=682, Invalid=3478, Unknown=0, NotChecked=0, Total=4160 [2022-12-14 11:02:20,914 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 2948 mSDsluCounter, 11484 mSDsCounter, 0 mSdLazyCounter, 5240 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 12141 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 5240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:02:20,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 12141 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 5240 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-12-14 11:02:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2022-12-14 11:02:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 3780. [2022-12-14 11:02:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3775 states have (on average 1.1388079470198675) internal successors, (4299), 3779 states have internal predecessors, (4299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:02:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 4299 transitions. [2022-12-14 11:02:23,012 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 4299 transitions. Word has length 140 [2022-12-14 11:02:23,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:02:23,012 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 4299 transitions. [2022-12-14 11:02:23,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:02:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 4299 transitions. [2022-12-14 11:02:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 11:02:23,014 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:02:23,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:02:23,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-14 11:02:23,014 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:02:23,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:02:23,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2112998976, now seen corresponding path program 1 times [2022-12-14 11:02:23,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:02:23,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223630246] [2022-12-14 11:02:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:02:23,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:02:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:02:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:02:33,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:02:33,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223630246] [2022-12-14 11:02:33,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223630246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:02:33,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:02:33,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-12-14 11:02:33,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856925079] [2022-12-14 11:02:33,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:02:33,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 11:02:33,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:02:33,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 11:02:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 11:02:33,985 INFO L87 Difference]: Start difference. First operand 3780 states and 4299 transitions. Second operand has 41 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 40 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:02:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:02:46,275 INFO L93 Difference]: Finished difference Result 4847 states and 5681 transitions. [2022-12-14 11:02:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-14 11:02:46,276 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 40 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:02:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:02:46,280 INFO L225 Difference]: With dead ends: 4847 [2022-12-14 11:02:46,280 INFO L226 Difference]: Without dead ends: 4843 [2022-12-14 11:02:46,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=745, Invalid=3545, Unknown=0, NotChecked=0, Total=4290 [2022-12-14 11:02:46,281 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 783 mSDsluCounter, 5993 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 6385 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:02:46,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 6385 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-14 11:02:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2022-12-14 11:02:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 3780. [2022-12-14 11:02:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3775 states have (on average 1.1385430463576158) internal successors, (4298), 3779 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) [2022-12-14 11:02:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 4298 transitions. [2022-12-14 11:02:48,559 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 4298 transitions. Word has length 140 [2022-12-14 11:02:48,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:02:48,559 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 4298 transitions. [2022-12-14 11:02:48,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 40 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:02:48,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 4298 transitions. [2022-12-14 11:02:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 11:02:48,561 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:02:48,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:02:48,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-14 11:02:48,561 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:02:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:02:48,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2055750611, now seen corresponding path program 1 times [2022-12-14 11:02:48,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:02:48,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807335873] [2022-12-14 11:02:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:02:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:02:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:02:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:02:52,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:02:52,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807335873] [2022-12-14 11:02:52,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807335873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:02:52,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:02:52,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-14 11:02:52,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915322222] [2022-12-14 11:02:52,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:02:52,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 11:02:52,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:02:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 11:02:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2022-12-14 11:02:52,075 INFO L87 Difference]: Start difference. First operand 3780 states and 4298 transitions. Second operand has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:03:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:03:05,547 INFO L93 Difference]: Finished difference Result 6776 states and 8140 transitions. [2022-12-14 11:03:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 11:03:05,548 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:03:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:03:05,553 INFO L225 Difference]: With dead ends: 6776 [2022-12-14 11:03:05,553 INFO L226 Difference]: Without dead ends: 6574 [2022-12-14 11:03:05,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=619, Invalid=3937, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 11:03:05,554 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1298 mSDsluCounter, 9369 mSDsCounter, 0 mSdLazyCounter, 4254 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 9930 SdHoareTripleChecker+Invalid, 4279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:03:05,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 9930 Invalid, 4279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 4254 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-14 11:03:05,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6574 states. [2022-12-14 11:03:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6574 to 3792. [2022-12-14 11:03:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3787 states have (on average 1.138104040137312) internal successors, (4310), 3791 states have internal predecessors, (4310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:03:07,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 4310 transitions. [2022-12-14 11:03:07,707 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 4310 transitions. Word has length 140 [2022-12-14 11:03:07,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:03:07,707 INFO L495 AbstractCegarLoop]: Abstraction has 3792 states and 4310 transitions. [2022-12-14 11:03:07,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:03:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 4310 transitions. [2022-12-14 11:03:07,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 11:03:07,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:03:07,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:03:07,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-14 11:03:07,709 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:03:07,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:03:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1306432832, now seen corresponding path program 1 times [2022-12-14 11:03:07,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:03:07,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586186248] [2022-12-14 11:03:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:03:07,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:03:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:03:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:03:15,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:03:15,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586186248] [2022-12-14 11:03:15,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586186248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:03:15,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:03:15,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-12-14 11:03:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781203183] [2022-12-14 11:03:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:03:15,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 11:03:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:03:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 11:03:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 11:03:15,674 INFO L87 Difference]: Start difference. First operand 3792 states and 4310 transitions. Second operand has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:03:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:03:32,324 INFO L93 Difference]: Finished difference Result 7769 states and 9444 transitions. [2022-12-14 11:03:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 11:03:32,325 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 11:03:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:03:32,330 INFO L225 Difference]: With dead ends: 7769 [2022-12-14 11:03:32,331 INFO L226 Difference]: Without dead ends: 7765 [2022-12-14 11:03:32,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=677, Invalid=3229, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 11:03:32,332 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1678 mSDsluCounter, 8835 mSDsCounter, 0 mSdLazyCounter, 3711 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 9521 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:03:32,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1678 Valid, 9521 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3711 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-14 11:03:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7765 states. [2022-12-14 11:03:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7765 to 3792. [2022-12-14 11:03:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3787 states have (on average 1.137839978875099) internal successors, (4309), 3791 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:03:34,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 4309 transitions. [2022-12-14 11:03:34,539 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 4309 transitions. Word has length 140 [2022-12-14 11:03:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:03:34,539 INFO L495 AbstractCegarLoop]: Abstraction has 3792 states and 4309 transitions. [2022-12-14 11:03:34,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:03:34,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 4309 transitions. [2022-12-14 11:03:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 11:03:34,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:03:34,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:03:34,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-14 11:03:34,541 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:03:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:03:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash -853039761, now seen corresponding path program 1 times [2022-12-14 11:03:34,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:03:34,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201876516] [2022-12-14 11:03:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:03:34,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:03:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:03:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:03:41,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:03:41,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201876516] [2022-12-14 11:03:41,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201876516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:03:41,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:03:41,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-12-14 11:03:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595189819] [2022-12-14 11:03:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:03:41,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 11:03:41,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:03:41,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 11:03:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 11:03:41,993 INFO L87 Difference]: Start difference. First operand 3792 states and 4309 transitions. Second operand has 38 states, 38 states have (on average 3.710526315789474) internal successors, (141), 37 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:03:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:03:55,694 INFO L93 Difference]: Finished difference Result 6060 states and 7252 transitions. [2022-12-14 11:03:55,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 11:03:55,694 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.710526315789474) internal successors, (141), 37 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-12-14 11:03:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:03:55,698 INFO L225 Difference]: With dead ends: 6060 [2022-12-14 11:03:55,698 INFO L226 Difference]: Without dead ends: 5802 [2022-12-14 11:03:55,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=689, Invalid=3733, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 11:03:55,699 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 970 mSDsluCounter, 5871 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 6225 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:03:55,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 6225 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3267 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-14 11:03:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5802 states. [2022-12-14 11:03:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5802 to 3785. [2022-12-14 11:03:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 3780 states have (on average 1.1378306878306879) internal successors, (4301), 3784 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:03:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 4301 transitions. [2022-12-14 11:03:57,908 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 4301 transitions. Word has length 141 [2022-12-14 11:03:57,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:03:57,908 INFO L495 AbstractCegarLoop]: Abstraction has 3785 states and 4301 transitions. [2022-12-14 11:03:57,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.710526315789474) internal successors, (141), 37 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:03:57,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 4301 transitions. [2022-12-14 11:03:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 11:03:57,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:03:57,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:03:57,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-14 11:03:57,910 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:03:57,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:03:57,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1880075601, now seen corresponding path program 1 times [2022-12-14 11:03:57,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:03:57,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781597152] [2022-12-14 11:03:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:03:57,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:03:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:04:05,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:05,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781597152] [2022-12-14 11:04:05,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781597152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:05,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:05,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-12-14 11:04:05,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657130793] [2022-12-14 11:04:05,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:05,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 11:04:05,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 11:04:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 11:04:05,720 INFO L87 Difference]: Start difference. First operand 3785 states and 4301 transitions. Second operand has 37 states, 37 states have (on average 3.810810810810811) internal successors, (141), 36 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:20,091 INFO L93 Difference]: Finished difference Result 5974 states and 7135 transitions. [2022-12-14 11:04:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 11:04:20,091 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.810810810810811) internal successors, (141), 36 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-12-14 11:04:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:20,095 INFO L225 Difference]: With dead ends: 5974 [2022-12-14 11:04:20,095 INFO L226 Difference]: Without dead ends: 5797 [2022-12-14 11:04:20,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=816, Invalid=4014, Unknown=0, NotChecked=0, Total=4830 [2022-12-14 11:04:20,097 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1663 mSDsluCounter, 7440 mSDsCounter, 0 mSdLazyCounter, 4028 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 7890 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:20,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 7890 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4028 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 11:04:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2022-12-14 11:04:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 3859. [2022-12-14 11:04:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3854 states have (on average 1.1414115204981836) internal successors, (4399), 3858 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 4399 transitions. [2022-12-14 11:04:22,464 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 4399 transitions. Word has length 141 [2022-12-14 11:04:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:22,464 INFO L495 AbstractCegarLoop]: Abstraction has 3859 states and 4399 transitions. [2022-12-14 11:04:22,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.810810810810811) internal successors, (141), 36 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 4399 transitions. [2022-12-14 11:04:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 11:04:22,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:22,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:22,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-14 11:04:22,466 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:04:22,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1175353782, now seen corresponding path program 1 times [2022-12-14 11:04:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:22,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24084303] [2022-12-14 11:04:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:22,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:04:22,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:22,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24084303] [2022-12-14 11:04:22,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24084303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:22,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:22,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 11:04:22,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445071158] [2022-12-14 11:04:22,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:22,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 11:04:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:22,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 11:04:22,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:04:22,791 INFO L87 Difference]: Start difference. First operand 3859 states and 4399 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:27,842 INFO L93 Difference]: Finished difference Result 6558 states and 7984 transitions. [2022-12-14 11:04:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:04:27,843 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-12-14 11:04:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:27,846 INFO L225 Difference]: With dead ends: 6558 [2022-12-14 11:04:27,847 INFO L226 Difference]: Without dead ends: 5042 [2022-12-14 11:04:27,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:04:27,848 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 494 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:27,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1748 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:04:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5042 states. [2022-12-14 11:04:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5042 to 4050. [2022-12-14 11:04:30,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 4045 states have (on average 1.1470951792336217) internal successors, (4640), 4049 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 4640 transitions. [2022-12-14 11:04:30,884 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 4640 transitions. Word has length 144 [2022-12-14 11:04:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:30,884 INFO L495 AbstractCegarLoop]: Abstraction has 4050 states and 4640 transitions. [2022-12-14 11:04:30,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 4640 transitions. [2022-12-14 11:04:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 11:04:30,886 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:30,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:30,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-14 11:04:30,886 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:04:30,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash -649806386, now seen corresponding path program 1 times [2022-12-14 11:04:30,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:30,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562064092] [2022-12-14 11:04:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:30,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:04:30,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:30,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562064092] [2022-12-14 11:04:30,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562064092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:30,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:30,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:30,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460728329] [2022-12-14 11:04:30,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:30,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:30,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:30,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:30,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:30,940 INFO L87 Difference]: Start difference. First operand 4050 states and 4640 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:33,858 INFO L93 Difference]: Finished difference Result 4952 states and 5850 transitions. [2022-12-14 11:04:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-12-14 11:04:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:33,862 INFO L225 Difference]: With dead ends: 4952 [2022-12-14 11:04:33,862 INFO L226 Difference]: Without dead ends: 3588 [2022-12-14 11:04:33,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:33,864 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 114 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:33,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 381 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2022-12-14 11:04:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 2607. [2022-12-14 11:04:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2607 states, 2602 states have (on average 1.07532667179093) internal successors, (2798), 2606 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 2798 transitions. [2022-12-14 11:04:35,750 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 2798 transitions. Word has length 144 [2022-12-14 11:04:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:35,750 INFO L495 AbstractCegarLoop]: Abstraction has 2607 states and 2798 transitions. [2022-12-14 11:04:35,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 2798 transitions. [2022-12-14 11:04:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 11:04:35,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:35,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:35,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-14 11:04:35,752 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:04:35,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash -559301328, now seen corresponding path program 1 times [2022-12-14 11:04:35,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:35,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874292778] [2022-12-14 11:04:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:04:36,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:36,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874292778] [2022-12-14 11:04:36,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874292778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:36,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:36,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 11:04:36,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738015404] [2022-12-14 11:04:36,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:36,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 11:04:36,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 11:04:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:04:36,197 INFO L87 Difference]: Start difference. First operand 2607 states and 2798 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:40,782 INFO L93 Difference]: Finished difference Result 3655 states and 4122 transitions. [2022-12-14 11:04:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 11:04:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-12-14 11:04:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:40,785 INFO L225 Difference]: With dead ends: 3655 [2022-12-14 11:04:40,786 INFO L226 Difference]: Without dead ends: 3653 [2022-12-14 11:04:40,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-12-14 11:04:40,786 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 533 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:40,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1710 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:04:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2022-12-14 11:04:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 2613. [2022-12-14 11:04:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2608 states have (on average 1.0751533742331287) internal successors, (2804), 2612 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 2804 transitions. [2022-12-14 11:04:42,666 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 2804 transitions. Word has length 144 [2022-12-14 11:04:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:42,666 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 2804 transitions. [2022-12-14 11:04:42,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 2804 transitions. [2022-12-14 11:04:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 11:04:42,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:42,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:42,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-14 11:04:42,668 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:04:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:42,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1558838595, now seen corresponding path program 1 times [2022-12-14 11:04:42,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:42,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033464789] [2022-12-14 11:04:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:42,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:04:43,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:43,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033464789] [2022-12-14 11:04:43,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033464789] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:43,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:43,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 11:04:43,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353517154] [2022-12-14 11:04:43,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:43,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 11:04:43,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:43,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 11:04:43,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:04:43,010 INFO L87 Difference]: Start difference. First operand 2613 states and 2804 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:47,798 INFO L93 Difference]: Finished difference Result 3714 states and 4205 transitions. [2022-12-14 11:04:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 11:04:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-12-14 11:04:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:47,801 INFO L225 Difference]: With dead ends: 3714 [2022-12-14 11:04:47,801 INFO L226 Difference]: Without dead ends: 3712 [2022-12-14 11:04:47,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-12-14 11:04:47,802 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 470 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:47,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1794 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:04:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2022-12-14 11:04:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 2613. [2022-12-14 11:04:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2608 states have (on average 1.0751533742331287) internal successors, (2804), 2612 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 2804 transitions. [2022-12-14 11:04:49,512 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 2804 transitions. Word has length 144 [2022-12-14 11:04:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:49,513 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 2804 transitions. [2022-12-14 11:04:49,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:04:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 2804 transitions. [2022-12-14 11:04:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 11:04:49,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:49,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:49,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-14 11:04:49,514 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:04:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2049882653, now seen corresponding path program 1 times [2022-12-14 11:04:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:49,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063752230] [2022-12-14 11:04:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:49,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:04:55,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:55,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063752230] [2022-12-14 11:04:55,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063752230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:55,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:55,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-12-14 11:04:55,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136589765] [2022-12-14 11:04:55,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:55,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 11:04:55,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:55,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 11:04:55,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 11:04:55,318 INFO L87 Difference]: Start difference. First operand 2613 states and 2804 transitions. Second operand has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:05:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:05:14,030 INFO L93 Difference]: Finished difference Result 4086 states and 4613 transitions. [2022-12-14 11:05:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-14 11:05:14,031 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-12-14 11:05:14,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:05:14,033 INFO L225 Difference]: With dead ends: 4086 [2022-12-14 11:05:14,033 INFO L226 Difference]: Without dead ends: 4078 [2022-12-14 11:05:14,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=829, Invalid=4283, Unknown=0, NotChecked=0, Total=5112 [2022-12-14 11:05:14,034 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1916 mSDsluCounter, 9249 mSDsCounter, 0 mSdLazyCounter, 5068 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 9736 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 5068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:05:14,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 9736 Invalid, 5105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 5068 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 11:05:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2022-12-14 11:05:15,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 2655. [2022-12-14 11:05:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2655 states, 2650 states have (on average 1.0743396226415094) internal successors, (2847), 2654 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:05:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 2847 transitions. [2022-12-14 11:05:15,855 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 2847 transitions. Word has length 146 [2022-12-14 11:05:15,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:05:15,855 INFO L495 AbstractCegarLoop]: Abstraction has 2655 states and 2847 transitions. [2022-12-14 11:05:15,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:05:15,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 2847 transitions. [2022-12-14 11:05:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 11:05:15,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:05:15,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:05:15,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-12-14 11:05:15,857 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:05:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:05:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1097193724, now seen corresponding path program 1 times [2022-12-14 11:05:15,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:05:15,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480805348] [2022-12-14 11:05:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:05:15,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:05:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:05:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:05:20,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:05:20,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480805348] [2022-12-14 11:05:20,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480805348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:05:20,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:05:20,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-14 11:05:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590152097] [2022-12-14 11:05:20,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:05:20,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 11:05:20,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:05:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 11:05:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:05:20,006 INFO L87 Difference]: Start difference. First operand 2655 states and 2847 transitions. Second operand has 27 states, 27 states have (on average 5.407407407407407) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:05:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:05:30,248 INFO L93 Difference]: Finished difference Result 4311 states and 4905 transitions. [2022-12-14 11:05:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 11:05:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.407407407407407) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-12-14 11:05:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:05:30,251 INFO L225 Difference]: With dead ends: 4311 [2022-12-14 11:05:30,251 INFO L226 Difference]: Without dead ends: 4303 [2022-12-14 11:05:30,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=416, Invalid=1936, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 11:05:30,252 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1669 mSDsluCounter, 6970 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 7473 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:05:30,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 7473 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 11:05:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2022-12-14 11:05:32,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 2643. [2022-12-14 11:05:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2639 states have (on average 1.0738916256157636) internal successors, (2834), 2642 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:05:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 2834 transitions. [2022-12-14 11:05:32,033 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 2834 transitions. Word has length 146 [2022-12-14 11:05:32,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:05:32,033 INFO L495 AbstractCegarLoop]: Abstraction has 2643 states and 2834 transitions. [2022-12-14 11:05:32,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.407407407407407) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:05:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 2834 transitions. [2022-12-14 11:05:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 11:05:32,035 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:05:32,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:05:32,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-12-14 11:05:32,035 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:05:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:05:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1396424227, now seen corresponding path program 1 times [2022-12-14 11:05:32,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:05:32,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109624472] [2022-12-14 11:05:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:05:32,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:05:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:05:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:05:37,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:05:37,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109624472] [2022-12-14 11:05:37,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109624472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:05:37,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:05:37,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-12-14 11:05:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739453419] [2022-12-14 11:05:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:05:37,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 11:05:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:05:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 11:05:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 11:05:37,042 INFO L87 Difference]: Start difference. First operand 2643 states and 2834 transitions. Second operand has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:05:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:05:47,912 INFO L93 Difference]: Finished difference Result 3663 states and 4123 transitions. [2022-12-14 11:05:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-14 11:05:47,913 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-12-14 11:05:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:05:47,915 INFO L225 Difference]: With dead ends: 3663 [2022-12-14 11:05:47,915 INFO L226 Difference]: Without dead ends: 3655 [2022-12-14 11:05:47,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=623, Invalid=3537, Unknown=0, NotChecked=0, Total=4160 [2022-12-14 11:05:47,916 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1522 mSDsluCounter, 6331 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 6734 SdHoareTripleChecker+Invalid, 3434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:05:47,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 6734 Invalid, 3434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 11:05:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2022-12-14 11:05:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 2643. [2022-12-14 11:05:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2639 states have (on average 1.0735126942023494) internal successors, (2833), 2642 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:05:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 2833 transitions. [2022-12-14 11:05:49,709 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 2833 transitions. Word has length 146 [2022-12-14 11:05:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:05:49,709 INFO L495 AbstractCegarLoop]: Abstraction has 2643 states and 2833 transitions. [2022-12-14 11:05:49,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:05:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 2833 transitions. [2022-12-14 11:05:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 11:05:49,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:05:49,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:05:49,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-12-14 11:05:49,711 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:05:49,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:05:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash 248533308, now seen corresponding path program 1 times [2022-12-14 11:05:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:05:49,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990103653] [2022-12-14 11:05:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:05:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:05:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:05:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:05:59,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:05:59,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990103653] [2022-12-14 11:05:59,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990103653] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:05:59,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:05:59,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-12-14 11:05:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753194495] [2022-12-14 11:05:59,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:05:59,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-14 11:05:59,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:05:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-14 11:05:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 11:05:59,981 INFO L87 Difference]: Start difference. First operand 2643 states and 2833 transitions. Second operand has 42 states, 42 states have (on average 3.4761904761904763) internal successors, (146), 41 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:06:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:06:20,784 INFO L93 Difference]: Finished difference Result 3839 states and 4355 transitions. [2022-12-14 11:06:20,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 11:06:20,785 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.4761904761904763) internal successors, (146), 41 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-12-14 11:06:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:06:20,788 INFO L225 Difference]: With dead ends: 3839 [2022-12-14 11:06:20,788 INFO L226 Difference]: Without dead ends: 3835 [2022-12-14 11:06:20,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=903, Invalid=4647, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 11:06:20,789 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 975 mSDsluCounter, 7203 mSDsCounter, 0 mSdLazyCounter, 4408 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 7561 SdHoareTripleChecker+Invalid, 4419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:06:20,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 7561 Invalid, 4419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4408 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-14 11:06:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2022-12-14 11:06:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 2597. [2022-12-14 11:06:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2593 states have (on average 1.0740455071345931) internal successors, (2785), 2596 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:06:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 2785 transitions. [2022-12-14 11:06:22,591 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 2785 transitions. Word has length 146 [2022-12-14 11:06:22,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:06:22,591 INFO L495 AbstractCegarLoop]: Abstraction has 2597 states and 2785 transitions. [2022-12-14 11:06:22,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.4761904761904763) internal successors, (146), 41 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:06:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 2785 transitions. [2022-12-14 11:06:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 11:06:22,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:06:22,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:06:22,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-14 11:06:22,593 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:06:22,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:06:22,593 INFO L85 PathProgramCache]: Analyzing trace with hash 166389815, now seen corresponding path program 1 times [2022-12-14 11:06:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:06:22,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102683471] [2022-12-14 11:06:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:06:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:06:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:06:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:06:26,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:06:26,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102683471] [2022-12-14 11:06:26,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102683471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:06:26,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:06:26,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 11:06:26,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899251866] [2022-12-14 11:06:26,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:06:26,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 11:06:26,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:06:26,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 11:06:26,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-12-14 11:06:26,197 INFO L87 Difference]: Start difference. First operand 2597 states and 2785 transitions. Second operand has 22 states, 22 states have (on average 6.636363636363637) internal successors, (146), 21 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:06:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:06:34,545 INFO L93 Difference]: Finished difference Result 4009 states and 4520 transitions. [2022-12-14 11:06:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 11:06:34,545 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.636363636363637) internal successors, (146), 21 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-12-14 11:06:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:06:34,548 INFO L225 Difference]: With dead ends: 4009 [2022-12-14 11:06:34,548 INFO L226 Difference]: Without dead ends: 4001 [2022-12-14 11:06:34,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 11:06:34,549 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 1224 mSDsluCounter, 5995 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 6555 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:06:34,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 6555 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 11:06:34,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2022-12-14 11:06:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 2589. [2022-12-14 11:06:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2585 states have (on average 1.0735009671179885) internal successors, (2775), 2588 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:06:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 2775 transitions. [2022-12-14 11:06:36,369 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 2775 transitions. Word has length 146 [2022-12-14 11:06:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:06:36,369 INFO L495 AbstractCegarLoop]: Abstraction has 2589 states and 2775 transitions. [2022-12-14 11:06:36,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.636363636363637) internal successors, (146), 21 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:06:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 2775 transitions. [2022-12-14 11:06:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 11:06:36,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:06:36,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:06:36,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-12-14 11:06:36,371 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:06:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:06:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash -582927964, now seen corresponding path program 1 times [2022-12-14 11:06:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:06:36,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259677732] [2022-12-14 11:06:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:06:36,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:06:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:06:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:06:40,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:06:40,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259677732] [2022-12-14 11:06:40,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259677732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:06:40,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:06:40,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-12-14 11:06:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429051730] [2022-12-14 11:06:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:06:40,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 11:06:40,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:06:40,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 11:06:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2022-12-14 11:06:40,653 INFO L87 Difference]: Start difference. First operand 2589 states and 2775 transitions. Second operand has 32 states, 32 states have (on average 4.5625) internal successors, (146), 31 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:06:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:06:54,207 INFO L93 Difference]: Finished difference Result 3839 states and 4361 transitions. [2022-12-14 11:06:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 11:06:54,208 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.5625) internal successors, (146), 31 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-12-14 11:06:54,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:06:54,211 INFO L225 Difference]: With dead ends: 3839 [2022-12-14 11:06:54,211 INFO L226 Difference]: Without dead ends: 3835 [2022-12-14 11:06:54,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=594, Invalid=3566, Unknown=0, NotChecked=0, Total=4160 [2022-12-14 11:06:54,212 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 2018 mSDsluCounter, 7276 mSDsCounter, 0 mSdLazyCounter, 3163 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 7687 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:06:54,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2018 Valid, 7687 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3163 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 11:06:54,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2022-12-14 11:06:56,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 2542. [2022-12-14 11:06:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2538 states have (on average 1.073680063041765) internal successors, (2725), 2541 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:06:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 2725 transitions. [2022-12-14 11:06:56,048 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 2725 transitions. Word has length 146 [2022-12-14 11:06:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:06:56,048 INFO L495 AbstractCegarLoop]: Abstraction has 2542 states and 2725 transitions. [2022-12-14 11:06:56,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.5625) internal successors, (146), 31 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:06:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 2725 transitions. [2022-12-14 11:06:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 11:06:56,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:06:56,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:06:56,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-12-14 11:06:56,050 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-14 11:06:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:06:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2129818064, now seen corresponding path program 1 times [2022-12-14 11:06:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:06:56,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639457696] [2022-12-14 11:06:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:06:56,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:06:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:07:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:07:00,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:07:00,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639457696] [2022-12-14 11:07:00,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639457696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:07:00,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:07:00,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-12-14 11:07:00,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637597883] [2022-12-14 11:07:00,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:07:00,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 11:07:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:07:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 11:07:00,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2022-12-14 11:07:00,752 INFO L87 Difference]: Start difference. First operand 2542 states and 2725 transitions. Second operand has 32 states, 32 states have (on average 4.5625) internal successors, (146), 31 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)