./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9 --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-6b4ec56 [2022-11-20 21:31:23,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:31:23,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:31:23,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:31:23,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:31:23,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:31:23,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:31:23,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:31:23,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:31:23,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:31:23,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:31:23,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:31:23,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:31:23,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:31:23,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:31:23,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:31:23,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:31:23,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:31:23,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:31:23,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:31:23,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:31:23,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:31:23,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:31:23,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:31:23,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:31:23,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:31:23,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:31:23,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:31:23,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:31:23,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:31:23,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:31:23,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:31:23,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:31:23,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:31:23,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:31:23,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:31:23,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:31:23,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:31:23,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:31:23,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:31:23,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:31:23,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:31:23,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:31:23,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:31:23,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:31:23,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:31:23,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:31:23,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:31:23,620 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:31:23,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:31:23,620 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:31:23,621 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:31:23,621 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:31:23,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:31:23,621 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:31:23,622 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:31:23,622 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:31:23,622 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:31:23,622 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:31:23,623 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:31:23,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:31:23,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:31:23,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:31:23,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:31:23,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:31:23,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:31:23,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:31:23,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:31:23,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:31:23,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:31:23,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:31:23,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:31:23,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:31:23,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:31:23,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:31:23,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:31:23,627 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:31:23,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:31:23,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:31:23,628 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:31:23,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:31:23,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:31:23,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:31:23,629 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59940e8fe87e3366018bea7f282f7e760705d94648fe4a1dff4928a6bf4a13ec [2022-11-20 21:31:23,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:31:23,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:31:23,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:31:23,976 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:31:23,977 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:31:23,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-20 21:31:27,172 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:31:27,515 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:31:27,517 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-20 21:31:27,544 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/data/adacc53a5/c95114dac8bc4beea61fce1fa8d009b4/FLAG6bfa16638 [2022-11-20 21:31:27,564 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/data/adacc53a5/c95114dac8bc4beea61fce1fa8d009b4 [2022-11-20 21:31:27,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:31:27,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:31:27,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:31:27,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:31:27,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:31:27,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:27" (1/1) ... [2022-11-20 21:31:27,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6971b85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:27, skipping insertion in model container [2022-11-20 21:31:27,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:27" (1/1) ... [2022-11-20 21:31:27,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:31:27,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:31:28,053 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2022-11-20 21:31:28,082 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2022-11-20 21:31:28,099 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2022-11-20 21:31:28,114 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2022-11-20 21:31:28,192 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2022-11-20 21:31:28,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:31:28,269 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:31:28,395 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2022-11-20 21:31:28,404 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2022-11-20 21:31:28,418 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2022-11-20 21:31:28,429 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2022-11-20 21:31:28,493 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_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2022-11-20 21:31:28,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:31:28,585 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:31:28,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28 WrapperNode [2022-11-20 21:31:28,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:31:28,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:31:28,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:31:28,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:31:28,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,690 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1689 [2022-11-20 21:31:28,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:31:28,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:31:28,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:31:28,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:31:28,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:31:28,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:31:28,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:31:28,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:31:28,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (1/1) ... [2022-11-20 21:31:28,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:31:28,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:31:28,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:31:28,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc99c2-6e61-4688-85b1-b07de2fb04d7/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:31:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:31:28,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:31:28,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:31:28,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:31:29,067 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:31:29,070 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:31:30,527 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:31:31,011 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:31:31,012 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 21:31:31,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:31 BoogieIcfgContainer [2022-11-20 21:31:31,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:31:31,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:31:31,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:31:31,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:31:31,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:31:27" (1/3) ... [2022-11-20 21:31:31,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287affb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:31, skipping insertion in model container [2022-11-20 21:31:31,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:28" (2/3) ... [2022-11-20 21:31:31,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287affb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:31, skipping insertion in model container [2022-11-20 21:31:31,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:31" (3/3) ... [2022-11-20 21:31:31,041 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-20 21:31:31,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:31:31,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-20 21:31:31,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:31:31,161 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;@12a3d81c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:31:31,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 21:31:31,170 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) [2022-11-20 21:31:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 21:31:31,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:31,192 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] [2022-11-20 21:31:31,193 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)] === [2022-11-20 21:31:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:31,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1131287639, now seen corresponding path program 1 times [2022-11-20 21:31:31,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:31,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871903111] [2022-11-20 21:31:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:31,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:33,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:33,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871903111] [2022-11-20 21:31:33,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871903111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:33,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:33,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:31:33,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703037057] [2022-11-20 21:31:33,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:33,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:31:33,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:33,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:31:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:31:33,157 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) [2022-11-20 21:31:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:33,584 INFO L93 Difference]: Finished difference Result 796 states and 1400 transitions. [2022-11-20 21:31:33,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:31:33,586 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 [2022-11-20 21:31:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:33,611 INFO L225 Difference]: With dead ends: 796 [2022-11-20 21:31:33,611 INFO L226 Difference]: Without dead ends: 558 [2022-11-20 21:31:33,617 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 [2022-11-20 21:31:33,622 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1885 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 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 [2022-11-20 21:31:33,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1885 Valid, 1026 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:31:33,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-20 21:31:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 537. [2022-11-20 21:31:33,751 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) [2022-11-20 21:31:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 719 transitions. [2022-11-20 21:31:33,754 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 719 transitions. Word has length 117 [2022-11-20 21:31:33,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:33,755 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 719 transitions. [2022-11-20 21:31:33,756 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) [2022-11-20 21:31:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 719 transitions. [2022-11-20 21:31:33,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 21:31:33,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:33,766 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] [2022-11-20 21:31:33,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:31:33,766 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)] === [2022-11-20 21:31:33,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:33,767 INFO L85 PathProgramCache]: Analyzing trace with hash -826924297, now seen corresponding path program 1 times [2022-11-20 21:31:33,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:33,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188174464] [2022-11-20 21:31:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:33,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:33,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:33,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188174464] [2022-11-20 21:31:33,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188174464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:33,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:33,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:31:33,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062622098] [2022-11-20 21:31:33,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:33,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:31:33,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:31:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:31:33,921 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) [2022-11-20 21:31:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:34,121 INFO L93 Difference]: Finished difference Result 1138 states and 1545 transitions. [2022-11-20 21:31:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:31:34,122 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 [2022-11-20 21:31:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:34,125 INFO L225 Difference]: With dead ends: 1138 [2022-11-20 21:31:34,125 INFO L226 Difference]: Without dead ends: 702 [2022-11-20 21:31:34,126 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 [2022-11-20 21:31:34,128 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:34,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 759 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:31:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-20 21:31:34,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 649. [2022-11-20 21:31:34,193 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) [2022-11-20 21:31:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 898 transitions. [2022-11-20 21:31:34,196 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 898 transitions. Word has length 119 [2022-11-20 21:31:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:34,196 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 898 transitions. [2022-11-20 21:31:34,197 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) [2022-11-20 21:31:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 898 transitions. [2022-11-20 21:31:34,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 21:31:34,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:34,199 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] [2022-11-20 21:31:34,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:31:34,199 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)] === [2022-11-20 21:31:34,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:34,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1420544869, now seen corresponding path program 1 times [2022-11-20 21:31:34,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:34,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944646882] [2022-11-20 21:31:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:34,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:34,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:34,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944646882] [2022-11-20 21:31:34,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944646882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:34,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:34,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:31:34,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125718400] [2022-11-20 21:31:34,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:34,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:31:34,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:31:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:31:34,347 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) [2022-11-20 21:31:34,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:34,602 INFO L93 Difference]: Finished difference Result 1541 states and 2194 transitions. [2022-11-20 21:31:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:31:34,603 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 [2022-11-20 21:31:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:34,609 INFO L225 Difference]: With dead ends: 1541 [2022-11-20 21:31:34,609 INFO L226 Difference]: Without dead ends: 939 [2022-11-20 21:31:34,611 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 [2022-11-20 21:31:34,614 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 [2022-11-20 21:31:34,615 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] [2022-11-20 21:31:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-20 21:31:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 851. [2022-11-20 21:31:34,716 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) [2022-11-20 21:31:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1222 transitions. [2022-11-20 21:31:34,719 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1222 transitions. Word has length 119 [2022-11-20 21:31:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:34,723 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1222 transitions. [2022-11-20 21:31:34,723 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) [2022-11-20 21:31:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1222 transitions. [2022-11-20 21:31:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 21:31:34,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:34,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:31:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:31:34,726 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)] === [2022-11-20 21:31:34,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash -190234362, now seen corresponding path program 1 times [2022-11-20 21:31:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:34,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051087102] [2022-11-20 21:31:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:34,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:35,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:35,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051087102] [2022-11-20 21:31:35,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051087102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:35,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:35,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:31:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817053291] [2022-11-20 21:31:35,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:35,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:31:35,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:31:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:31:35,017 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) [2022-11-20 21:31:35,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:35,381 INFO L93 Difference]: Finished difference Result 1605 states and 2316 transitions. [2022-11-20 21:31:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:31:35,382 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 [2022-11-20 21:31:35,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:35,386 INFO L225 Difference]: With dead ends: 1605 [2022-11-20 21:31:35,386 INFO L226 Difference]: Without dead ends: 851 [2022-11-20 21:31:35,391 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 [2022-11-20 21:31:35,399 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 [2022-11-20 21:31:35,401 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] [2022-11-20 21:31:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-20 21:31:35,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 851. [2022-11-20 21:31:35,555 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) [2022-11-20 21:31:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1210 transitions. [2022-11-20 21:31:35,558 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1210 transitions. Word has length 122 [2022-11-20 21:31:35,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:35,558 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1210 transitions. [2022-11-20 21:31:35,559 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) [2022-11-20 21:31:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1210 transitions. [2022-11-20 21:31:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 21:31:35,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:35,563 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] [2022-11-20 21:31:35,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:31:35,564 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)] === [2022-11-20 21:31:35,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:35,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1075869867, now seen corresponding path program 1 times [2022-11-20 21:31:35,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:35,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880817387] [2022-11-20 21:31:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:36,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:36,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880817387] [2022-11-20 21:31:36,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880817387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:36,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:36,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:31:36,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177270214] [2022-11-20 21:31:36,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:36,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:31:36,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:31:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:31:36,296 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) [2022-11-20 21:31:37,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:37,157 INFO L93 Difference]: Finished difference Result 3059 states and 4549 transitions. [2022-11-20 21:31:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:31:37,164 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 [2022-11-20 21:31:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:37,176 INFO L225 Difference]: With dead ends: 3059 [2022-11-20 21:31:37,176 INFO L226 Difference]: Without dead ends: 2398 [2022-11-20 21:31:37,179 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 [2022-11-20 21:31:37,179 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 714 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:37,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1421 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:31:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2022-11-20 21:31:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2298. [2022-11-20 21:31:37,599 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) [2022-11-20 21:31:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3428 transitions. [2022-11-20 21:31:37,612 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3428 transitions. Word has length 122 [2022-11-20 21:31:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:37,614 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 3428 transitions. [2022-11-20 21:31:37,614 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) [2022-11-20 21:31:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3428 transitions. [2022-11-20 21:31:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 21:31:37,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:37,617 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] [2022-11-20 21:31:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:31:37,618 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)] === [2022-11-20 21:31:37,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:37,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1075438891, now seen corresponding path program 1 times [2022-11-20 21:31:37,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:37,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769450019] [2022-11-20 21:31:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:37,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:38,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:38,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769450019] [2022-11-20 21:31:38,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769450019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:38,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:38,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:31:38,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449041680] [2022-11-20 21:31:38,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:38,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:31:38,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:38,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:31:38,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:31:38,481 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) [2022-11-20 21:31:39,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:39,543 INFO L93 Difference]: Finished difference Result 6154 states and 9192 transitions. [2022-11-20 21:31:39,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:31:39,544 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 [2022-11-20 21:31:39,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:39,558 INFO L225 Difference]: With dead ends: 6154 [2022-11-20 21:31:39,558 INFO L226 Difference]: Without dead ends: 3995 [2022-11-20 21:31:39,562 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 [2022-11-20 21:31:39,563 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 736 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:39,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 955 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:31:39,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-11-20 21:31:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3962. [2022-11-20 21:31:40,233 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) [2022-11-20 21:31:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 5876 transitions. [2022-11-20 21:31:40,253 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 5876 transitions. Word has length 122 [2022-11-20 21:31:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:40,253 INFO L495 AbstractCegarLoop]: Abstraction has 3962 states and 5876 transitions. [2022-11-20 21:31:40,254 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) [2022-11-20 21:31:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 5876 transitions. [2022-11-20 21:31:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 21:31:40,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:40,257 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] [2022-11-20 21:31:40,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 21:31:40,257 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)] === [2022-11-20 21:31:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash 541338667, now seen corresponding path program 1 times [2022-11-20 21:31:40,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:40,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995253524] [2022-11-20 21:31:40,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:40,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:40,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:40,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995253524] [2022-11-20 21:31:40,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995253524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:40,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:40,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:31:40,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520895793] [2022-11-20 21:31:40,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:40,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:31:40,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:31:40,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:31:40,371 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) [2022-11-20 21:31:41,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:41,890 INFO L93 Difference]: Finished difference Result 10444 states and 15748 transitions. [2022-11-20 21:31:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:31:41,891 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 [2022-11-20 21:31:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:41,919 INFO L225 Difference]: With dead ends: 10444 [2022-11-20 21:31:41,919 INFO L226 Difference]: Without dead ends: 6593 [2022-11-20 21:31:41,926 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 [2022-11-20 21:31:41,929 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 [2022-11-20 21:31:41,929 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] [2022-11-20 21:31:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6593 states. [2022-11-20 21:31:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6593 to 6360. [2022-11-20 21:31:43,039 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) [2022-11-20 21:31:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 9642 transitions. [2022-11-20 21:31:43,065 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 9642 transitions. Word has length 124 [2022-11-20 21:31:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:43,066 INFO L495 AbstractCegarLoop]: Abstraction has 6360 states and 9642 transitions. [2022-11-20 21:31:43,066 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) [2022-11-20 21:31:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 9642 transitions. [2022-11-20 21:31:43,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 21:31:43,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:43,069 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] [2022-11-20 21:31:43,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 21:31:43,070 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)] === [2022-11-20 21:31:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash -317202333, now seen corresponding path program 1 times [2022-11-20 21:31:43,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:43,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174268308] [2022-11-20 21:31:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:43,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:43,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:43,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174268308] [2022-11-20 21:31:43,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174268308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:43,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:43,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:31:43,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999017037] [2022-11-20 21:31:43,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:43,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:31:43,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:43,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:31:43,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:31:43,791 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) [2022-11-20 21:31:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:45,419 INFO L93 Difference]: Finished difference Result 13856 states and 21226 transitions. [2022-11-20 21:31:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:31:45,420 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 [2022-11-20 21:31:45,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:45,457 INFO L225 Difference]: With dead ends: 13856 [2022-11-20 21:31:45,458 INFO L226 Difference]: Without dead ends: 7909 [2022-11-20 21:31:45,467 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 [2022-11-20 21:31:45,469 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1356 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 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 [2022-11-20 21:31:45,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 715 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:31:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2022-11-20 21:31:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 7888. [2022-11-20 21:31:46,835 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) [2022-11-20 21:31:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 12001 transitions. [2022-11-20 21:31:46,854 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 12001 transitions. Word has length 127 [2022-11-20 21:31:46,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:46,854 INFO L495 AbstractCegarLoop]: Abstraction has 7888 states and 12001 transitions. [2022-11-20 21:31:46,855 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) [2022-11-20 21:31:46,855 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 12001 transitions. [2022-11-20 21:31:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 21:31:46,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:46,858 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] [2022-11-20 21:31:46,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 21:31:46,859 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)] === [2022-11-20 21:31:46,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:46,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1155681947, now seen corresponding path program 1 times [2022-11-20 21:31:46,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:46,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701894202] [2022-11-20 21:31:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:47,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:47,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701894202] [2022-11-20 21:31:47,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701894202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:47,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:47,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:31:47,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984899602] [2022-11-20 21:31:47,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:47,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:31:47,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:31:47,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:31:47,732 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) [2022-11-20 21:31:50,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:50,202 INFO L93 Difference]: Finished difference Result 14998 states and 22771 transitions. [2022-11-20 21:31:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:31:50,203 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 [2022-11-20 21:31:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:50,254 INFO L225 Difference]: With dead ends: 14998 [2022-11-20 21:31:50,254 INFO L226 Difference]: Without dead ends: 10442 [2022-11-20 21:31:50,263 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 [2022-11-20 21:31:50,265 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1716 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 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 [2022-11-20 21:31:50,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 703 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:31:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2022-11-20 21:31:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 7793. [2022-11-20 21:31:51,711 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) [2022-11-20 21:31:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 11519 transitions. [2022-11-20 21:31:51,723 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 11519 transitions. Word has length 132 [2022-11-20 21:31:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:51,724 INFO L495 AbstractCegarLoop]: Abstraction has 7793 states and 11519 transitions. [2022-11-20 21:31:51,724 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) [2022-11-20 21:31:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 11519 transitions. [2022-11-20 21:31:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 21:31:51,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:51,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:31:51,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 21:31:51,728 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)] === [2022-11-20 21:31:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1430509385, now seen corresponding path program 1 times [2022-11-20 21:31:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:51,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637863278] [2022-11-20 21:31:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:31:52,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:52,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637863278] [2022-11-20 21:31:52,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637863278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:52,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:52,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 21:31:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101420532] [2022-11-20 21:31:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 21:31:52,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 21:31:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 21:31:52,896 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) [2022-11-20 21:31:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:57,405 INFO L93 Difference]: Finished difference Result 20129 states and 30439 transitions. [2022-11-20 21:31:57,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 21:31:57,406 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 [2022-11-20 21:31:57,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:57,463 INFO L225 Difference]: With dead ends: 20129 [2022-11-20 21:31:57,463 INFO L226 Difference]: Without dead ends: 17042 [2022-11-20 21:31:57,473 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 [2022-11-20 21:31:57,474 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 2848 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2848 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:57,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2848 Valid, 1874 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 21:31:57,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17042 states. [2022-11-20 21:32:00,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17042 to 14285. [2022-11-20 21:32:00,367 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) [2022-11-20 21:32:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14285 states to 14285 states and 21473 transitions. [2022-11-20 21:32:00,399 INFO L78 Accepts]: Start accepts. Automaton has 14285 states and 21473 transitions. Word has length 132 [2022-11-20 21:32:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:00,399 INFO L495 AbstractCegarLoop]: Abstraction has 14285 states and 21473 transitions. [2022-11-20 21:32:00,399 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) [2022-11-20 21:32:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 14285 states and 21473 transitions. [2022-11-20 21:32:00,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 21:32:00,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:00,405 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] [2022-11-20 21:32:00,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 21:32:00,405 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)] === [2022-11-20 21:32:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:00,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1430078409, now seen corresponding path program 1 times [2022-11-20 21:32:00,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:32:00,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983900529] [2022-11-20 21:32:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:00,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:32:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:32:13,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:32:13,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983900529] [2022-11-20 21:32:13,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983900529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:13,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:13,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-20 21:32:13,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727483979] [2022-11-20 21:32:13,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:13,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 21:32:13,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:32:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 21:32:13,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 21:32:13,171 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) [2022-11-20 21:32:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:41,461 INFO L93 Difference]: Finished difference Result 43046 states and 64459 transitions. [2022-11-20 21:32:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 21:32:41,462 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 [2022-11-20 21:32:41,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:41,567 INFO L225 Difference]: With dead ends: 43046 [2022-11-20 21:32:41,568 INFO L226 Difference]: Without dead ends: 37227 [2022-11-20 21:32:41,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=1033, Invalid=4223, Unknown=0, NotChecked=0, Total=5256 [2022-11-20 21:32:41,583 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 4377 mSDsluCounter, 9786 mSDsCounter, 0 mSdLazyCounter, 5319 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 10388 SdHoareTripleChecker+Invalid, 5495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 5319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:41,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4377 Valid, 10388 Invalid, 5495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [176 Valid, 5319 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-20 21:32:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37227 states. [2022-11-20 21:32:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37227 to 19908. [2022-11-20 21:32:45,461 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) [2022-11-20 21:32:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19908 states to 19908 states and 29726 transitions. [2022-11-20 21:32:45,499 INFO L78 Accepts]: Start accepts. Automaton has 19908 states and 29726 transitions. Word has length 132 [2022-11-20 21:32:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:45,499 INFO L495 AbstractCegarLoop]: Abstraction has 19908 states and 29726 transitions. [2022-11-20 21:32:45,500 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) [2022-11-20 21:32:45,500 INFO L276 IsEmpty]: Start isEmpty. Operand 19908 states and 29726 transitions. [2022-11-20 21:32:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 21:32:45,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:45,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:45,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 21:32:45,506 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)] === [2022-11-20 21:32:45,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1752265178, now seen corresponding path program 1 times [2022-11-20 21:32:45,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:32:45,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239395077] [2022-11-20 21:32:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:45,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:32:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:32:53,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:32:53,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239395077] [2022-11-20 21:32:53,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239395077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:53,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:53,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-20 21:32:53,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213740298] [2022-11-20 21:32:53,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:53,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 21:32:53,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:32:53,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 21:32:53,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2022-11-20 21:32:53,500 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) [2022-11-20 21:33:34,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:33:34,639 INFO L93 Difference]: Finished difference Result 76141 states and 114165 transitions. [2022-11-20 21:33:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-20 21:33:34,640 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 [2022-11-20 21:33:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:33:34,799 INFO L225 Difference]: With dead ends: 76141 [2022-11-20 21:33:34,799 INFO L226 Difference]: Without dead ends: 56313 [2022-11-20 21:33:34,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=955, Invalid=6185, Unknown=0, NotChecked=0, Total=7140 [2022-11-20 21:33:34,831 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 3872 mSDsluCounter, 13243 mSDsCounter, 0 mSdLazyCounter, 8475 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3872 SdHoareTripleChecker+Valid, 13963 SdHoareTripleChecker+Invalid, 8633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 8475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:33:34,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3872 Valid, 13963 Invalid, 8633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [158 Valid, 8475 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-11-20 21:33:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56313 states. [2022-11-20 21:33:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56313 to 27011. [2022-11-20 21:33:42,119 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) [2022-11-20 21:33:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27011 states to 27011 states and 40416 transitions. [2022-11-20 21:33:42,172 INFO L78 Accepts]: Start accepts. Automaton has 27011 states and 40416 transitions. Word has length 132 [2022-11-20 21:33:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:33:42,172 INFO L495 AbstractCegarLoop]: Abstraction has 27011 states and 40416 transitions. [2022-11-20 21:33:42,172 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) [2022-11-20 21:33:42,173 INFO L276 IsEmpty]: Start isEmpty. Operand 27011 states and 40416 transitions. [2022-11-20 21:33:42,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 21:33:42,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:33:42,178 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] [2022-11-20 21:33:42,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 21:33:42,179 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)] === [2022-11-20 21:33:42,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:33:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1057162613, now seen corresponding path program 1 times [2022-11-20 21:33:42,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:33:42,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693419326] [2022-11-20 21:33:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:33:42,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:33:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:33:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:33:48,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:33:48,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693419326] [2022-11-20 21:33:48,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693419326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:33:48,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:33:48,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-20 21:33:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836945363] [2022-11-20 21:33:48,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:33:48,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 21:33:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:33:48,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 21:33:48,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2022-11-20 21:33:48,928 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) [2022-11-20 21:34:13,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:34:13,390 INFO L93 Difference]: Finished difference Result 58981 states and 88535 transitions. [2022-11-20 21:34:13,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 21:34:13,390 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 [2022-11-20 21:34:13,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:34:13,497 INFO L225 Difference]: With dead ends: 58981 [2022-11-20 21:34:13,497 INFO L226 Difference]: Without dead ends: 46833 [2022-11-20 21:34:13,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=484, Invalid=2486, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 21:34:13,523 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2841 mSDsluCounter, 8517 mSDsCounter, 0 mSdLazyCounter, 4750 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2841 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 4845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 4750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:34:13,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2841 Valid, 9019 Invalid, 4845 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 4750 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 21:34:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46833 states. [2022-11-20 21:34:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46833 to 25146. [2022-11-20 21:34:19,427 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) [2022-11-20 21:34:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25146 states to 25146 states and 37638 transitions. [2022-11-20 21:34:19,476 INFO L78 Accepts]: Start accepts. Automaton has 25146 states and 37638 transitions. Word has length 132 [2022-11-20 21:34:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:34:19,477 INFO L495 AbstractCegarLoop]: Abstraction has 25146 states and 37638 transitions. [2022-11-20 21:34:19,477 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) [2022-11-20 21:34:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 25146 states and 37638 transitions. [2022-11-20 21:34:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 21:34:19,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:34:19,483 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] [2022-11-20 21:34:19,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 21:34:19,483 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)] === [2022-11-20 21:34:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:34:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash 324522177, now seen corresponding path program 1 times [2022-11-20 21:34:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:34:19,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082359858] [2022-11-20 21:34:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:34:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:34:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:34:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:34:19,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:34:19,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082359858] [2022-11-20 21:34:19,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082359858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:34:19,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:34:19,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:34:19,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113166603] [2022-11-20 21:34:19,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:34:19,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:34:19,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:34:19,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:34:19,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:34:19,619 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) [2022-11-20 21:34:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:34:24,761 INFO L93 Difference]: Finished difference Result 44499 states and 66816 transitions. [2022-11-20 21:34:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:34:24,761 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 [2022-11-20 21:34:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:34:24,794 INFO L225 Difference]: With dead ends: 44499 [2022-11-20 21:34:24,795 INFO L226 Difference]: Without dead ends: 19630 [2022-11-20 21:34:24,817 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 [2022-11-20 21:34:24,818 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:34:24,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 308 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:34:24,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19630 states. [2022-11-20 21:34:29,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19630 to 19630. [2022-11-20 21:34:29,625 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) [2022-11-20 21:34:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19630 states to 19630 states and 29206 transitions. [2022-11-20 21:34:29,652 INFO L78 Accepts]: Start accepts. Automaton has 19630 states and 29206 transitions. Word has length 132 [2022-11-20 21:34:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:34:29,653 INFO L495 AbstractCegarLoop]: Abstraction has 19630 states and 29206 transitions. [2022-11-20 21:34:29,653 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) [2022-11-20 21:34:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 19630 states and 29206 transitions. [2022-11-20 21:34:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 21:34:29,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:34:29,657 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] [2022-11-20 21:34:29,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 21:34:29,658 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)] === [2022-11-20 21:34:29,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:34:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1022662381, now seen corresponding path program 1 times [2022-11-20 21:34:29,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:34:29,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461691294] [2022-11-20 21:34:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:34:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:34:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:34:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:34:30,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:34:30,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461691294] [2022-11-20 21:34:30,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461691294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:34:30,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:34:30,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:34:30,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230478443] [2022-11-20 21:34:30,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:34:30,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:34:30,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:34:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:34:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:34:30,343 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) [2022-11-20 21:34:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:34:35,765 INFO L93 Difference]: Finished difference Result 26126 states and 38887 transitions. [2022-11-20 21:34:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:34:35,766 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 [2022-11-20 21:34:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:34:35,792 INFO L225 Difference]: With dead ends: 26126 [2022-11-20 21:34:35,792 INFO L226 Difference]: Without dead ends: 19683 [2022-11-20 21:34:35,798 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 [2022-11-20 21:34:35,799 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1455 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 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 [2022-11-20 21:34:35,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 768 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:34:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19683 states. [2022-11-20 21:34:41,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19683 to 19622. [2022-11-20 21:34:41,097 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) [2022-11-20 21:34:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19622 states to 19622 states and 29028 transitions. [2022-11-20 21:34:41,126 INFO L78 Accepts]: Start accepts. Automaton has 19622 states and 29028 transitions. Word has length 132 [2022-11-20 21:34:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:34:41,127 INFO L495 AbstractCegarLoop]: Abstraction has 19622 states and 29028 transitions. [2022-11-20 21:34:41,127 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) [2022-11-20 21:34:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 19622 states and 29028 transitions. [2022-11-20 21:34:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 21:34:41,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:34:41,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:34:41,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 21:34:41,132 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)] === [2022-11-20 21:34:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:34:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash 315164629, now seen corresponding path program 1 times [2022-11-20 21:34:41,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:34:41,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414859910] [2022-11-20 21:34:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:34:41,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:34:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:34:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:34:41,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:34:41,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414859910] [2022-11-20 21:34:41,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414859910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:34:41,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:34:41,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:34:41,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066295050] [2022-11-20 21:34:41,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:34:41,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:34:41,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:34:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:34:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:34:41,836 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) [2022-11-20 21:34:47,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:34:47,416 INFO L93 Difference]: Finished difference Result 33562 states and 49879 transitions. [2022-11-20 21:34:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:34:47,417 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 [2022-11-20 21:34:47,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:34:47,444 INFO L225 Difference]: With dead ends: 33562 [2022-11-20 21:34:47,444 INFO L226 Difference]: Without dead ends: 20030 [2022-11-20 21:34:47,452 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 [2022-11-20 21:34:47,453 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 945 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 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 [2022-11-20 21:34:47,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 904 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:34:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20030 states.