./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur --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 59940e8fe87e3366018bea7f282f7e760705d94648fe4a1dff4928a6bf4a13ec --- 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-38b53e6 [2022-11-26 00:50:35,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:50:35,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:50:35,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:50:35,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:50:35,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:50:35,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:50:35,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:50:35,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:50:35,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:50:35,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:50:35,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:50:35,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:50:35,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:50:35,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:50:35,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:50:35,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:50:35,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:50:35,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:50:35,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:50:35,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:50:35,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:50:35,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:50:35,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:50:35,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:50:35,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:50:35,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:50:35,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:50:35,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:50:35,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:50:35,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:50:35,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:50:35,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:50:35,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:50:35,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:50:35,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:50:35,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:50:35,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:50:35,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:50:35,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:50:35,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:50:35,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:50:35,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:50:35,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:50:35,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:50:35,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:50:35,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:50:35,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:50:35,595 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:50:35,595 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:50:35,596 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:50:35,596 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:50:35,597 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:50:35,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:50:35,598 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:50:35,598 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:50:35,598 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:50:35,599 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:50:35,599 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:50:35,599 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:50:35,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:50:35,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:50:35,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:50:35,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:50:35,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:50:35,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:50:35,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:50:35,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:50:35,603 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:50:35,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:50:35,604 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:50:35,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:50:35,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:50:35,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:50:35,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:50:35,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:50:35,606 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:50:35,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:50:35,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:50:35,606 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:50:35,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:50:35,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:50:35,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:50:35,607 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_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59940e8fe87e3366018bea7f282f7e760705d94648fe4a1dff4928a6bf4a13ec [2022-11-26 00:50:35,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:50:35,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:50:35,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:50:35,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:50:35,939 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:50:35,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-26 00:50:39,038 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:50:39,423 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:50:39,423 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-26 00:50:39,436 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/data/96cd1502e/491ec987ba8b423aaa4a50117c4aab58/FLAG7d978abcc [2022-11-26 00:50:39,453 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/data/96cd1502e/491ec987ba8b423aaa4a50117c4aab58 [2022-11-26 00:50:39,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:50:39,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:50:39,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:50:39,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:50:39,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:50:39,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:50:39" (1/1) ... [2022-11-26 00:50:39,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f894c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:39, skipping insertion in model container [2022-11-26 00:50:39,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:50:39" (1/1) ... [2022-11-26 00:50:39,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:50:39,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:50:40,081 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2022-11-26 00:50:40,109 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_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2022-11-26 00:50:40,152 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_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2022-11-26 00:50:40,178 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_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2022-11-26 00:50:40,325 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_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2022-11-26 00:50:40,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:50:40,441 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:50:40,623 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_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2022-11-26 00:50:40,637 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_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2022-11-26 00:50:40,664 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_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2022-11-26 00:50:40,684 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_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2022-11-26 00:50:40,749 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_91b749e4-9252-461e-ac48-197ff65095c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2022-11-26 00:50:40,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:50:40,824 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:50:40,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40 WrapperNode [2022-11-26 00:50:40,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:50:40,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:50:40,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:50:40,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:50:40,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:40,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:40,938 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1689 [2022-11-26 00:50:40,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:50:40,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:50:40,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:50:40,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:50:40,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:40,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:40,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:40,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:41,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:41,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:41,039 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:41,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:41,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:50:41,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:50:41,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:50:41,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:50:41,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (1/1) ... [2022-11-26 00:50:41,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:50:41,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:50:41,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:50:41,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b749e4-9252-461e-ac48-197ff65095c1/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:50:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:50:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:50:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:50:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:50:41,419 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:50:41,458 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:50:42,856 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:50:43,320 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:50:43,320 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:50:43,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:50:43 BoogieIcfgContainer [2022-11-26 00:50:43,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:50:43,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:50:43,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:50:43,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:50:43,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:50:39" (1/3) ... [2022-11-26 00:50:43,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f2e711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:50:43, skipping insertion in model container [2022-11-26 00:50:43,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:40" (2/3) ... [2022-11-26 00:50:43,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f2e711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:50:43, skipping insertion in model container [2022-11-26 00:50:43,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:50:43" (3/3) ... [2022-11-26 00:50:43,338 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-26 00:50:43,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:50:43,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-26 00:50:43,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:50:43,438 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;@28f0974e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:50:43,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-26 00:50:43,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 303 states have (on average 1.8052805280528053) internal successors, (547), 308 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-26 00:50:43,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:43,460 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] [2022-11-26 00:50:43,461 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)] === [2022-11-26 00:50:43,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:43,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1131287639, now seen corresponding path program 1 times [2022-11-26 00:50:43,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:43,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307706716] [2022-11-26 00:50:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:43,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:45,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:45,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307706716] [2022-11-26 00:50:45,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307706716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:45,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:45,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:50:45,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656151016] [2022-11-26 00:50:45,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:45,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:50:45,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:45,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:50:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:50:45,506 INFO L87 Difference]: Start difference. First operand has 309 states, 303 states have (on average 1.8052805280528053) internal successors, (547), 308 states have internal predecessors, (547), 0 states have call successors, (0), 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 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:45,949 INFO L93 Difference]: Finished difference Result 796 states and 1400 transitions. [2022-11-26 00:50:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:50:45,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-11-26 00:50:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:45,980 INFO L225 Difference]: With dead ends: 796 [2022-11-26 00:50:45,980 INFO L226 Difference]: Without dead ends: 558 [2022-11-26 00:50:45,988 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 [2022-11-26 00:50:45,995 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1843 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:45,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 1026 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:50:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-26 00:50:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 537. [2022-11-26 00:50:46,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 532 states have (on average 1.3515037593984962) internal successors, (719), 536 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 719 transitions. [2022-11-26 00:50:46,106 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 719 transitions. Word has length 117 [2022-11-26 00:50:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:46,107 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 719 transitions. [2022-11-26 00:50:46,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 719 transitions. [2022-11-26 00:50:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-26 00:50:46,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:46,111 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] [2022-11-26 00:50:46,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:50:46,112 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)] === [2022-11-26 00:50:46,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:46,113 INFO L85 PathProgramCache]: Analyzing trace with hash -826924297, now seen corresponding path program 1 times [2022-11-26 00:50:46,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:46,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112855884] [2022-11-26 00:50:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:46,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:46,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:46,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112855884] [2022-11-26 00:50:46,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112855884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:46,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:46,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:46,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327215555] [2022-11-26 00:50:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:46,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:46,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:46,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:46,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:46,310 INFO L87 Difference]: Start difference. First operand 537 states and 719 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:46,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:46,562 INFO L93 Difference]: Finished difference Result 1138 states and 1545 transitions. [2022-11-26 00:50:46,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:46,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-11-26 00:50:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:46,566 INFO L225 Difference]: With dead ends: 1138 [2022-11-26 00:50:46,567 INFO L226 Difference]: Without dead ends: 702 [2022-11-26 00:50:46,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:46,569 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 208 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:46,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 759 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:50:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-26 00:50:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 649. [2022-11-26 00:50:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 644 states have (on average 1.3944099378881987) internal successors, (898), 648 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:46,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 898 transitions. [2022-11-26 00:50:46,647 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 898 transitions. Word has length 119 [2022-11-26 00:50:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:46,647 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 898 transitions. [2022-11-26 00:50:46,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 898 transitions. [2022-11-26 00:50:46,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-26 00:50:46,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:46,650 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] [2022-11-26 00:50:46,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:50:46,651 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)] === [2022-11-26 00:50:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1420544869, now seen corresponding path program 1 times [2022-11-26 00:50:46,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:46,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177243143] [2022-11-26 00:50:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:46,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:46,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:46,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177243143] [2022-11-26 00:50:46,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177243143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:46,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:46,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346351170] [2022-11-26 00:50:46,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:46,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:46,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:46,759 INFO L87 Difference]: Start difference. First operand 649 states and 898 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:47,007 INFO L93 Difference]: Finished difference Result 1541 states and 2194 transitions. [2022-11-26 00:50:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:47,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-11-26 00:50:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:47,012 INFO L225 Difference]: With dead ends: 1541 [2022-11-26 00:50:47,013 INFO L226 Difference]: Without dead ends: 939 [2022-11-26 00:50:47,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:47,017 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 247 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:47,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 794 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:50:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-26 00:50:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 851. [2022-11-26 00:50:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 846 states have (on average 1.4444444444444444) internal successors, (1222), 850 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1222 transitions. [2022-11-26 00:50:47,129 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1222 transitions. Word has length 119 [2022-11-26 00:50:47,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:47,132 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1222 transitions. [2022-11-26 00:50:47,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:47,133 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1222 transitions. [2022-11-26 00:50:47,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-26 00:50:47,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:47,137 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] [2022-11-26 00:50:47,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:50:47,137 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)] === [2022-11-26 00:50:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:47,141 INFO L85 PathProgramCache]: Analyzing trace with hash -190234362, now seen corresponding path program 1 times [2022-11-26 00:50:47,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:47,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163673263] [2022-11-26 00:50:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:47,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:47,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:47,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163673263] [2022-11-26 00:50:47,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163673263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:47,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:47,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:50:47,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497655881] [2022-11-26 00:50:47,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:47,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:50:47,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:50:47,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:50:47,404 INFO L87 Difference]: Start difference. First operand 851 states and 1222 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:47,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:47,804 INFO L93 Difference]: Finished difference Result 1605 states and 2316 transitions. [2022-11-26 00:50:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:50:47,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-11-26 00:50:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:47,809 INFO L225 Difference]: With dead ends: 1605 [2022-11-26 00:50:47,809 INFO L226 Difference]: Without dead ends: 851 [2022-11-26 00:50:47,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:50:47,821 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1104 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:47,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 316 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:50:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-26 00:50:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 851. [2022-11-26 00:50:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 846 states have (on average 1.4302600472813238) internal successors, (1210), 850 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1210 transitions. [2022-11-26 00:50:47,965 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1210 transitions. Word has length 122 [2022-11-26 00:50:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:47,965 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1210 transitions. [2022-11-26 00:50:47,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1210 transitions. [2022-11-26 00:50:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-26 00:50:47,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:47,968 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] [2022-11-26 00:50:47,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:50:47,968 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)] === [2022-11-26 00:50:47,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:47,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1075869867, now seen corresponding path program 1 times [2022-11-26 00:50:47,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:47,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179397936] [2022-11-26 00:50:47,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:47,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:48,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:48,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179397936] [2022-11-26 00:50:48,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179397936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:48,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:48,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:50:48,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247461478] [2022-11-26 00:50:48,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:50:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:50:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:50:48,826 INFO L87 Difference]: Start difference. First operand 851 states and 1210 transitions. Second operand has 5 states, 5 states have (on average 24.4) 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) [2022-11-26 00:50:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:49,665 INFO L93 Difference]: Finished difference Result 3059 states and 4549 transitions. [2022-11-26 00:50:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:50:49,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) 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 [2022-11-26 00:50:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:49,713 INFO L225 Difference]: With dead ends: 3059 [2022-11-26 00:50:49,713 INFO L226 Difference]: Without dead ends: 2398 [2022-11-26 00:50:49,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:50:49,715 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 561 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:49,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1421 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:50:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2022-11-26 00:50:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2298. [2022-11-26 00:50:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2293 states have (on average 1.4949847361535107) internal successors, (3428), 2297 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3428 transitions. [2022-11-26 00:50:50,177 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3428 transitions. Word has length 122 [2022-11-26 00:50:50,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:50,178 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 3428 transitions. [2022-11-26 00:50:50,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) 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) [2022-11-26 00:50:50,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3428 transitions. [2022-11-26 00:50:50,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-26 00:50:50,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:50,180 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] [2022-11-26 00:50:50,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:50:50,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:50:50,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:50,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1075438891, now seen corresponding path program 1 times [2022-11-26 00:50:50,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:50,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462693309] [2022-11-26 00:50:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:50,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:51,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:51,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462693309] [2022-11-26 00:50:51,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462693309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:51,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:51,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:50:51,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113758805] [2022-11-26 00:50:51,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:51,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:50:51,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:51,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:50:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:50:51,096 INFO L87 Difference]: Start difference. First operand 2298 states and 3428 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:52,181 INFO L93 Difference]: Finished difference Result 6154 states and 9192 transitions. [2022-11-26 00:50:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:50:52,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-11-26 00:50:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:52,198 INFO L225 Difference]: With dead ends: 6154 [2022-11-26 00:50:52,198 INFO L226 Difference]: Without dead ends: 3995 [2022-11-26 00:50:52,204 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 [2022-11-26 00:50:52,206 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 705 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:52,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 955 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:50:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-11-26 00:50:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3962. [2022-11-26 00:50:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3957 states have (on average 1.4849633560778368) internal successors, (5876), 3961 states have internal predecessors, (5876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 5876 transitions. [2022-11-26 00:50:53,044 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 5876 transitions. Word has length 122 [2022-11-26 00:50:53,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:53,044 INFO L495 AbstractCegarLoop]: Abstraction has 3962 states and 5876 transitions. [2022-11-26 00:50:53,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:53,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 5876 transitions. [2022-11-26 00:50:53,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-26 00:50:53,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:53,048 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] [2022-11-26 00:50:53,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:50:53,048 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:50:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:53,049 INFO L85 PathProgramCache]: Analyzing trace with hash 541338667, now seen corresponding path program 1 times [2022-11-26 00:50:53,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:53,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638297566] [2022-11-26 00:50:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:53,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:53,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:53,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638297566] [2022-11-26 00:50:53,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638297566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:53,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:53,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043486176] [2022-11-26 00:50:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:53,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:53,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:53,167 INFO L87 Difference]: Start difference. First operand 3962 states and 5876 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:54,898 INFO L93 Difference]: Finished difference Result 10444 states and 15748 transitions. [2022-11-26 00:50:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:54,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-11-26 00:50:54,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:54,926 INFO L225 Difference]: With dead ends: 10444 [2022-11-26 00:50:54,926 INFO L226 Difference]: Without dead ends: 6593 [2022-11-26 00:50:54,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:54,933 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 217 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:54,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 758 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:50:54,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6593 states. [2022-11-26 00:50:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6593 to 6360. [2022-11-26 00:50:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6360 states, 6355 states have (on average 1.5172305271439812) internal successors, (9642), 6359 states have internal predecessors, (9642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 9642 transitions. [2022-11-26 00:50:56,026 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 9642 transitions. Word has length 124 [2022-11-26 00:50:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:56,026 INFO L495 AbstractCegarLoop]: Abstraction has 6360 states and 9642 transitions. [2022-11-26 00:50:56,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 9642 transitions. [2022-11-26 00:50:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-26 00:50:56,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:56,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:56,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:50:56,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:50:56,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:56,033 INFO L85 PathProgramCache]: Analyzing trace with hash -317202333, now seen corresponding path program 1 times [2022-11-26 00:50:56,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:56,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833406994] [2022-11-26 00:50:56,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:56,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:56,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:56,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833406994] [2022-11-26 00:50:56,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833406994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:56,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:56,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:50:56,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162300589] [2022-11-26 00:50:56,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:56,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:50:56,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:50:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:50:56,916 INFO L87 Difference]: Start difference. First operand 6360 states and 9642 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:58,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:58,741 INFO L93 Difference]: Finished difference Result 13856 states and 21226 transitions. [2022-11-26 00:50:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:50:58,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-26 00:50:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:58,773 INFO L225 Difference]: With dead ends: 13856 [2022-11-26 00:50:58,773 INFO L226 Difference]: Without dead ends: 7909 [2022-11-26 00:50:58,782 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 [2022-11-26 00:50:58,783 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1315 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 715 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 [2022-11-26 00:50:58,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 715 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:50:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2022-11-26 00:51:00,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 7888. [2022-11-26 00:51:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7888 states, 7883 states have (on average 1.5223899530635545) internal successors, (12001), 7887 states have internal predecessors, (12001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 12001 transitions. [2022-11-26 00:51:00,709 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 12001 transitions. Word has length 127 [2022-11-26 00:51:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:00,710 INFO L495 AbstractCegarLoop]: Abstraction has 7888 states and 12001 transitions. [2022-11-26 00:51:00,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:00,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 12001 transitions. [2022-11-26 00:51:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:51:00,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:00,714 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] [2022-11-26 00:51:00,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:51:00,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:51:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1155681947, now seen corresponding path program 1 times [2022-11-26 00:51:00,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:00,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058739553] [2022-11-26 00:51:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:00,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:01,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:01,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058739553] [2022-11-26 00:51:01,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058739553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:01,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:01,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:51:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067459719] [2022-11-26 00:51:01,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:01,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:51:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:01,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:51:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:51:01,896 INFO L87 Difference]: Start difference. First operand 7888 states and 12001 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:03,849 INFO L93 Difference]: Finished difference Result 14998 states and 22771 transitions. [2022-11-26 00:51:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:51:03,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:51:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:03,886 INFO L225 Difference]: With dead ends: 14998 [2022-11-26 00:51:03,887 INFO L226 Difference]: Without dead ends: 10442 [2022-11-26 00:51:03,894 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 [2022-11-26 00:51:03,896 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1689 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:03,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 703 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:51:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2022-11-26 00:51:05,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 7793. [2022-11-26 00:51:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7793 states, 7788 states have (on average 1.479070364663585) internal successors, (11519), 7792 states have internal predecessors, (11519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 11519 transitions. [2022-11-26 00:51:05,171 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 11519 transitions. Word has length 132 [2022-11-26 00:51:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:05,172 INFO L495 AbstractCegarLoop]: Abstraction has 7793 states and 11519 transitions. [2022-11-26 00:51:05,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 11519 transitions. [2022-11-26 00:51:05,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:51:05,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:05,178 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] [2022-11-26 00:51:05,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:51:05,178 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)] === [2022-11-26 00:51:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1430509385, now seen corresponding path program 1 times [2022-11-26 00:51:05,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:05,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166905420] [2022-11-26 00:51:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:05,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:06,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:06,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166905420] [2022-11-26 00:51:06,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166905420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:06,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:06,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:51:06,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562080490] [2022-11-26 00:51:06,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:06,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:51:06,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:06,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:51:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:51:06,761 INFO L87 Difference]: Start difference. First operand 7793 states and 11519 transitions. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:11,274 INFO L93 Difference]: Finished difference Result 20129 states and 30439 transitions. [2022-11-26 00:51:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:51:11,274 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:51:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:11,322 INFO L225 Difference]: With dead ends: 20129 [2022-11-26 00:51:11,322 INFO L226 Difference]: Without dead ends: 17042 [2022-11-26 00:51:11,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:51:11,331 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 2668 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2668 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:11,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2668 Valid, 1874 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 00:51:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17042 states. [2022-11-26 00:51:13,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17042 to 14285. [2022-11-26 00:51:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14285 states, 14280 states have (on average 1.5037114845938375) internal successors, (21473), 14284 states have internal predecessors, (21473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14285 states to 14285 states and 21473 transitions. [2022-11-26 00:51:13,895 INFO L78 Accepts]: Start accepts. Automaton has 14285 states and 21473 transitions. Word has length 132 [2022-11-26 00:51:13,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:13,896 INFO L495 AbstractCegarLoop]: Abstraction has 14285 states and 21473 transitions. [2022-11-26 00:51:13,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:13,897 INFO L276 IsEmpty]: Start isEmpty. Operand 14285 states and 21473 transitions. [2022-11-26 00:51:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:51:13,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:13,903 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] [2022-11-26 00:51:13,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:51:13,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:51:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1430078409, now seen corresponding path program 1 times [2022-11-26 00:51:13,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:13,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092573445] [2022-11-26 00:51:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:13,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:27,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092573445] [2022-11-26 00:51:27,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092573445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:27,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:27,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-26 00:51:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255720862] [2022-11-26 00:51:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:27,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-26 00:51:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-26 00:51:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-26 00:51:27,482 INFO L87 Difference]: Start difference. First operand 14285 states and 21473 transitions. Second operand has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:55,924 INFO L93 Difference]: Finished difference Result 43046 states and 64459 transitions. [2022-11-26 00:51:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-26 00:51:55,925 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:51:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:56,029 INFO L225 Difference]: With dead ends: 43046 [2022-11-26 00:51:56,029 INFO L226 Difference]: Without dead ends: 37227 [2022-11-26 00:51:56,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=1033, Invalid=4223, Unknown=0, NotChecked=0, Total=5256 [2022-11-26 00:51:56,045 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 4272 mSDsluCounter, 9786 mSDsCounter, 0 mSdLazyCounter, 5319 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4272 SdHoareTripleChecker+Valid, 10388 SdHoareTripleChecker+Invalid, 5492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 5319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:56,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4272 Valid, 10388 Invalid, 5492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 5319 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-26 00:51:56,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37227 states. [2022-11-26 00:52:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37227 to 19908. [2022-11-26 00:52:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19908 states, 19903 states have (on average 1.4935436868813747) internal successors, (29726), 19907 states have internal predecessors, (29726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19908 states to 19908 states and 29726 transitions. [2022-11-26 00:52:00,087 INFO L78 Accepts]: Start accepts. Automaton has 19908 states and 29726 transitions. Word has length 132 [2022-11-26 00:52:00,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:52:00,087 INFO L495 AbstractCegarLoop]: Abstraction has 19908 states and 29726 transitions. [2022-11-26 00:52:00,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 19908 states and 29726 transitions. [2022-11-26 00:52:00,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:52:00,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:00,094 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] [2022-11-26 00:52:00,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:52:00,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:52:00,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1752265178, now seen corresponding path program 1 times [2022-11-26 00:52:00,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:00,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918333657] [2022-11-26 00:52:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:00,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:52:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:52:09,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:52:09,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918333657] [2022-11-26 00:52:09,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918333657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:52:09,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:52:09,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-26 00:52:09,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725011278] [2022-11-26 00:52:09,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:52:09,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-26 00:52:09,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:52:09,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-26 00:52:09,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:52:09,744 INFO L87 Difference]: Start difference. First operand 19908 states and 29726 transitions. Second operand has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:52:51,798 INFO L93 Difference]: Finished difference Result 76141 states and 114165 transitions. [2022-11-26 00:52:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-26 00:52:51,799 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:52:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:52:51,924 INFO L225 Difference]: With dead ends: 76141 [2022-11-26 00:52:51,924 INFO L226 Difference]: Without dead ends: 56313 [2022-11-26 00:52:51,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=955, Invalid=6185, Unknown=0, NotChecked=0, Total=7140 [2022-11-26 00:52:51,955 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 3801 mSDsluCounter, 13243 mSDsCounter, 0 mSdLazyCounter, 8475 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3801 SdHoareTripleChecker+Valid, 13963 SdHoareTripleChecker+Invalid, 8630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 8475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:52:51,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3801 Valid, 13963 Invalid, 8630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 8475 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-11-26 00:52:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56313 states. [2022-11-26 00:52:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56313 to 27011. [2022-11-26 00:52:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27011 states, 27006 states have (on average 1.496556320817596) internal successors, (40416), 27010 states have internal predecessors, (40416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27011 states to 27011 states and 40416 transitions. [2022-11-26 00:52:58,783 INFO L78 Accepts]: Start accepts. Automaton has 27011 states and 40416 transitions. Word has length 132 [2022-11-26 00:52:58,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:52:58,783 INFO L495 AbstractCegarLoop]: Abstraction has 27011 states and 40416 transitions. [2022-11-26 00:52:58,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 27011 states and 40416 transitions. [2022-11-26 00:52:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:52:58,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:58,790 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] [2022-11-26 00:52:58,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:52:58,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:52:58,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1057162613, now seen corresponding path program 1 times [2022-11-26 00:52:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:58,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722426670] [2022-11-26 00:52:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:07,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:07,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722426670] [2022-11-26 00:53:07,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722426670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:07,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:07,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-26 00:53:07,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639555304] [2022-11-26 00:53:07,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:07,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-26 00:53:07,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-26 00:53:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:53:07,134 INFO L87 Difference]: Start difference. First operand 27011 states and 40416 transitions. Second operand has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:32,874 INFO L93 Difference]: Finished difference Result 58981 states and 88535 transitions. [2022-11-26 00:53:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-26 00:53:32,875 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:53:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:32,972 INFO L225 Difference]: With dead ends: 58981 [2022-11-26 00:53:32,972 INFO L226 Difference]: Without dead ends: 46833 [2022-11-26 00:53:32,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=484, Invalid=2486, Unknown=0, NotChecked=0, Total=2970 [2022-11-26 00:53:32,988 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2735 mSDsluCounter, 8517 mSDsCounter, 0 mSdLazyCounter, 4750 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 4843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:32,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2735 Valid, 9019 Invalid, 4843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 4750 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-26 00:53:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46833 states. [2022-11-26 00:53:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46833 to 25146. [2022-11-26 00:53:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25146 states, 25141 states have (on average 1.497076488604272) internal successors, (37638), 25145 states have internal predecessors, (37638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25146 states to 25146 states and 37638 transitions. [2022-11-26 00:53:39,562 INFO L78 Accepts]: Start accepts. Automaton has 25146 states and 37638 transitions. Word has length 132 [2022-11-26 00:53:39,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:39,563 INFO L495 AbstractCegarLoop]: Abstraction has 25146 states and 37638 transitions. [2022-11-26 00:53:39,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand 25146 states and 37638 transitions. [2022-11-26 00:53:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:53:39,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:39,570 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] [2022-11-26 00:53:39,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:53:39,570 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:53:39,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:39,571 INFO L85 PathProgramCache]: Analyzing trace with hash 324522177, now seen corresponding path program 1 times [2022-11-26 00:53:39,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:39,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795704889] [2022-11-26 00:53:39,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:39,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:39,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:39,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795704889] [2022-11-26 00:53:39,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795704889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:39,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:39,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:53:39,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184006124] [2022-11-26 00:53:39,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:39,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:53:39,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:53:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:53:39,743 INFO L87 Difference]: Start difference. First operand 25146 states and 37638 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:46,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:46,072 INFO L93 Difference]: Finished difference Result 44499 states and 66816 transitions. [2022-11-26 00:53:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:53:46,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:53:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:46,101 INFO L225 Difference]: With dead ends: 44499 [2022-11-26 00:53:46,101 INFO L226 Difference]: Without dead ends: 19630 [2022-11-26 00:53:46,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:53:46,116 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1080 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:46,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 308 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:53:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19630 states. [2022-11-26 00:53:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19630 to 19630. [2022-11-26 00:53:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19630 states, 19625 states have (on average 1.488203821656051) internal successors, (29206), 19629 states have internal predecessors, (29206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19630 states to 19630 states and 29206 transitions. [2022-11-26 00:53:50,954 INFO L78 Accepts]: Start accepts. Automaton has 19630 states and 29206 transitions. Word has length 132 [2022-11-26 00:53:50,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:50,954 INFO L495 AbstractCegarLoop]: Abstraction has 19630 states and 29206 transitions. [2022-11-26 00:53:50,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 19630 states and 29206 transitions. [2022-11-26 00:53:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:53:50,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:50,959 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] [2022-11-26 00:53:50,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:53:50,960 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:53:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1022662381, now seen corresponding path program 1 times [2022-11-26 00:53:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:50,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652427350] [2022-11-26 00:53:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:51,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:51,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652427350] [2022-11-26 00:53:51,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652427350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:51,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:51,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:53:51,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603312205] [2022-11-26 00:53:51,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:51,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:53:51,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:53:51,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:53:51,643 INFO L87 Difference]: Start difference. First operand 19630 states and 29206 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:57,070 INFO L93 Difference]: Finished difference Result 26126 states and 38887 transitions. [2022-11-26 00:53:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:53:57,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:53:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:57,099 INFO L225 Difference]: With dead ends: 26126 [2022-11-26 00:53:57,100 INFO L226 Difference]: Without dead ends: 19683 [2022-11-26 00:53:57,106 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 [2022-11-26 00:53:57,107 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1421 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:57,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 768 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:53:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19683 states. [2022-11-26 00:54:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19683 to 19622. [2022-11-26 00:54:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19622 states, 19617 states have (on average 1.4797369628383545) internal successors, (29028), 19621 states have internal predecessors, (29028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19622 states to 19622 states and 29028 transitions. [2022-11-26 00:54:01,901 INFO L78 Accepts]: Start accepts. Automaton has 19622 states and 29028 transitions. Word has length 132 [2022-11-26 00:54:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:01,901 INFO L495 AbstractCegarLoop]: Abstraction has 19622 states and 29028 transitions. [2022-11-26 00:54:01,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 19622 states and 29028 transitions. [2022-11-26 00:54:01,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:54:01,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:01,906 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] [2022-11-26 00:54:01,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:54:01,906 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:54:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash 315164629, now seen corresponding path program 1 times [2022-11-26 00:54:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:01,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008985513] [2022-11-26 00:54:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:01,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:02,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:02,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008985513] [2022-11-26 00:54:02,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008985513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:02,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:54:02,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:54:02,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146850657] [2022-11-26 00:54:02,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:02,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:54:02,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:54:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:54:02,569 INFO L87 Difference]: Start difference. First operand 19622 states and 29028 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:07,669 INFO L93 Difference]: Finished difference Result 33562 states and 49879 transitions. [2022-11-26 00:54:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:54:07,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:54:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:07,698 INFO L225 Difference]: With dead ends: 33562 [2022-11-26 00:54:07,698 INFO L226 Difference]: Without dead ends: 20030 [2022-11-26 00:54:07,706 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 [2022-11-26 00:54:07,707 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 901 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:07,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 904 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:54:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20030 states. [2022-11-26 00:54:12,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20030 to 17600. [2022-11-26 00:54:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17600 states, 17595 states have (on average 1.4777493606138108) internal successors, (26001), 17599 states have internal predecessors, (26001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17600 states to 17600 states and 26001 transitions. [2022-11-26 00:54:12,095 INFO L78 Accepts]: Start accepts. Automaton has 17600 states and 26001 transitions. Word has length 132 [2022-11-26 00:54:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:12,095 INFO L495 AbstractCegarLoop]: Abstraction has 17600 states and 26001 transitions. [2022-11-26 00:54:12,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 17600 states and 26001 transitions. [2022-11-26 00:54:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:54:12,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:12,100 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] [2022-11-26 00:54:12,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:54:12,101 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:54:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash 379368943, now seen corresponding path program 1 times [2022-11-26 00:54:12,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:12,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185830562] [2022-11-26 00:54:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:12,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:20,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:20,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185830562] [2022-11-26 00:54:20,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185830562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:20,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:54:20,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-26 00:54:20,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283631147] [2022-11-26 00:54:20,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:20,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-26 00:54:20,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-26 00:54:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2022-11-26 00:54:20,232 INFO L87 Difference]: Start difference. First operand 17600 states and 26001 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:48,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:48,007 INFO L93 Difference]: Finished difference Result 47765 states and 71467 transitions. [2022-11-26 00:54:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-26 00:54:48,007 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:54:48,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:48,090 INFO L225 Difference]: With dead ends: 47765 [2022-11-26 00:54:48,090 INFO L226 Difference]: Without dead ends: 44674 [2022-11-26 00:54:48,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=622, Invalid=3800, Unknown=0, NotChecked=0, Total=4422 [2022-11-26 00:54:48,101 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 3374 mSDsluCounter, 8382 mSDsCounter, 0 mSdLazyCounter, 4522 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 8803 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 4522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:48,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3374 Valid, 8803 Invalid, 4670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 4522 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-26 00:54:48,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44674 states. [2022-11-26 00:54:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44674 to 27100. [2022-11-26 00:54:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27100 states, 27095 states have (on average 1.4813065141169957) internal successors, (40136), 27099 states have internal predecessors, (40136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27100 states to 27100 states and 40136 transitions. [2022-11-26 00:54:55,862 INFO L78 Accepts]: Start accepts. Automaton has 27100 states and 40136 transitions. Word has length 132 [2022-11-26 00:54:55,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:55,862 INFO L495 AbstractCegarLoop]: Abstraction has 27100 states and 40136 transitions. [2022-11-26 00:54:55,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 27100 states and 40136 transitions. [2022-11-26 00:54:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:54:55,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:55,866 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] [2022-11-26 00:54:55,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:54:55,867 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-26 00:54:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1491561676, now seen corresponding path program 1 times [2022-11-26 00:54:55,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:55,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705543267] [2022-11-26 00:54:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:55,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:04,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:04,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705543267] [2022-11-26 00:55:04,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705543267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:04,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:04,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-26 00:55:04,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067570992] [2022-11-26 00:55:04,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:04,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-26 00:55:04,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:04,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-26 00:55:04,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:55:04,533 INFO L87 Difference]: Start difference. First operand 27100 states and 40136 transitions. Second operand has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:56:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:10,876 INFO L93 Difference]: Finished difference Result 128640 states and 190596 transitions. [2022-11-26 00:56:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-26 00:56:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-26 00:56:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:11,158 INFO L225 Difference]: With dead ends: 128640 [2022-11-26 00:56:11,158 INFO L226 Difference]: Without dead ends: 117315 [2022-11-26 00:56:11,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=1304, Invalid=7438, Unknown=0, NotChecked=0, Total=8742 [2022-11-26 00:56:11,204 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 4246 mSDsluCounter, 11107 mSDsCounter, 0 mSdLazyCounter, 6955 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 11679 SdHoareTripleChecker+Invalid, 7084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 6955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:11,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4246 Valid, 11679 Invalid, 7084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 6955 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-26 00:56:11,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117315 states.