./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5990b1cf211e12a23ca85722a0e539783495fb8504bce43e0d5e789fe089f178 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:39:29,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:39:29,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:39:29,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:39:29,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:39:29,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:39:29,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:39:29,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:39:29,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:39:29,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:39:29,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:39:29,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:39:29,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:39:29,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:39:29,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:39:29,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:39:29,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:39:29,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:39:29,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:39:29,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:39:29,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:39:29,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:39:29,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:39:29,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:39:29,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:39:29,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:39:29,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:39:29,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:39:29,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:39:29,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:39:29,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:39:29,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:39:29,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:39:29,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:39:29,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:39:29,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:39:29,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:39:29,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:39:29,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:39:29,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:39:29,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:39:29,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:39:29,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:39:29,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:39:29,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:39:29,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:39:29,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:39:29,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:39:29,473 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:39:29,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:39:29,473 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:39:29,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:39:29,474 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:39:29,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:39:29,474 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:39:29,474 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:39:29,474 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:39:29,474 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:39:29,475 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:39:29,475 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:39:29,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:39:29,476 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:39:29,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:39:29,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:39:29,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:39:29,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:39:29,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:39:29,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:39:29,477 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:39:29,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:39:29,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:39:29,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:39:29,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:39:29,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:39:29,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:39:29,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:39:29,478 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:39:29,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:39:29,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:39:29,479 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:39:29,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:39:29,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:39:29,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:39:29,480 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5990b1cf211e12a23ca85722a0e539783495fb8504bce43e0d5e789fe089f178 [2022-12-14 07:39:29,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:39:29,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:39:29,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:39:29,700 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:39:29,700 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:39:29,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2022-12-14 07:39:32,272 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:39:32,506 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:39:32,506 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2022-12-14 07:39:32,518 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/data/d84a10540/9c8ec82029454f199e86b3ef3458545f/FLAG8716f9a5e [2022-12-14 07:39:32,529 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/data/d84a10540/9c8ec82029454f199e86b3ef3458545f [2022-12-14 07:39:32,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:39:32,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:39:32,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:39:32,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:39:32,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:39:32,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:39:32" (1/1) ... [2022-12-14 07:39:32,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1972dd6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:32, skipping insertion in model container [2022-12-14 07:39:32,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:39:32" (1/1) ... [2022-12-14 07:39:32,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:39:32,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:39:32,800 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18815,18828] [2022-12-14 07:39:32,825 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25895,25908] [2022-12-14 07:39:32,836 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29420,29433] [2022-12-14 07:39:32,846 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32798,32811] [2022-12-14 07:39:32,858 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36856,36869] [2022-12-14 07:39:32,868 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40310,40323] [2022-12-14 07:39:32,878 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43875,43888] [2022-12-14 07:39:32,887 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47290,47303] [2022-12-14 07:39:32,898 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50969,50982] [2022-12-14 07:39:32,908 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54551,54564] [2022-12-14 07:39:32,918 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58080,58093] [2022-12-14 07:39:32,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:39:32,967 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:39:33,030 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18815,18828] [2022-12-14 07:39:33,046 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25895,25908] [2022-12-14 07:39:33,055 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29420,29433] [2022-12-14 07:39:33,062 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32798,32811] [2022-12-14 07:39:33,071 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36856,36869] [2022-12-14 07:39:33,079 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40310,40323] [2022-12-14 07:39:33,086 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43875,43888] [2022-12-14 07:39:33,094 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47290,47303] [2022-12-14 07:39:33,102 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50969,50982] [2022-12-14 07:39:33,109 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54551,54564] [2022-12-14 07:39:33,116 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_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58080,58093] [2022-12-14 07:39:33,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:39:33,145 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:39:33,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33 WrapperNode [2022-12-14 07:39:33,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:39:33,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:39:33,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:39:33,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:39:33,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,227 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2761 [2022-12-14 07:39:33,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:39:33,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:39:33,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:39:33,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:39:33,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:39:33,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:39:33,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:39:33,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:39:33,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (1/1) ... [2022-12-14 07:39:33,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:39:33,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:39:33,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:39:33,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:39:33,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:39:33,485 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:39:33,487 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:39:34,458 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:39:34,552 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:39:34,553 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 07:39:34,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:39:34 BoogieIcfgContainer [2022-12-14 07:39:34,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:39:34,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:39:34,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:39:34,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:39:34,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:39:32" (1/3) ... [2022-12-14 07:39:34,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab9b05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:39:34, skipping insertion in model container [2022-12-14 07:39:34,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:33" (2/3) ... [2022-12-14 07:39:34,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab9b05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:39:34, skipping insertion in model container [2022-12-14 07:39:34,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:39:34" (3/3) ... [2022-12-14 07:39:34,561 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2022-12-14 07:39:34,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:39:34,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-14 07:39:34,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:39:34,624 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;@7d49105b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:39:34,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 07:39:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 551 states, 539 states have (on average 1.784786641929499) internal successors, (962), 550 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 07:39:34,640 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:34,640 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] [2022-12-14 07:39:34,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1518492486, now seen corresponding path program 1 times [2022-12-14 07:39:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:34,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703694304] [2022-12-14 07:39:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:34,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:35,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:35,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703694304] [2022-12-14 07:39:35,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703694304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:35,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:35,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:39:35,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824460770] [2022-12-14 07:39:35,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:35,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:39:35,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:35,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:39:35,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:39:35,084 INFO L87 Difference]: Start difference. First operand has 551 states, 539 states have (on average 1.784786641929499) internal successors, (962), 550 states have internal predecessors, (962), 0 states have call successors, (0), 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 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:35,533 INFO L93 Difference]: Finished difference Result 746 states and 1267 transitions. [2022-12-14 07:39:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:39:35,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-12-14 07:39:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:35,544 INFO L225 Difference]: With dead ends: 746 [2022-12-14 07:39:35,544 INFO L226 Difference]: Without dead ends: 485 [2022-12-14 07:39:35,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:39:35,549 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2338 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:35,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2338 Valid, 517 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-12-14 07:39:35,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2022-12-14 07:39:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 474 states have (on average 1.2552742616033756) internal successors, (595), 484 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 595 transitions. [2022-12-14 07:39:35,596 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 595 transitions. Word has length 59 [2022-12-14 07:39:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:35,596 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 595 transitions. [2022-12-14 07:39:35,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 595 transitions. [2022-12-14 07:39:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 07:39:35,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:35,599 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] [2022-12-14 07:39:35,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:39:35,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:35,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1943729877, now seen corresponding path program 1 times [2022-12-14 07:39:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:35,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59024450] [2022-12-14 07:39:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:35,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:35,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59024450] [2022-12-14 07:39:35,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59024450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:35,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:35,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:39:35,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423715410] [2022-12-14 07:39:35,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:35,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:39:35,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:35,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:39:35,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:39:35,756 INFO L87 Difference]: Start difference. First operand 485 states and 595 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:35,947 INFO L93 Difference]: Finished difference Result 566 states and 685 transitions. [2022-12-14 07:39:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:39:35,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-12-14 07:39:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:35,950 INFO L225 Difference]: With dead ends: 566 [2022-12-14 07:39:35,950 INFO L226 Difference]: Without dead ends: 333 [2022-12-14 07:39:35,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:39:35,952 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1147 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:35,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 234 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:39:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-12-14 07:39:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-12-14 07:39:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 322 states have (on average 1.2484472049689441) internal successors, (402), 332 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 402 transitions. [2022-12-14 07:39:35,968 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 402 transitions. Word has length 59 [2022-12-14 07:39:35,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:35,968 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 402 transitions. [2022-12-14 07:39:35,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 402 transitions. [2022-12-14 07:39:35,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 07:39:35,969 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:35,969 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] [2022-12-14 07:39:35,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:39:35,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:35,970 INFO L85 PathProgramCache]: Analyzing trace with hash -19682530, now seen corresponding path program 1 times [2022-12-14 07:39:35,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:35,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337584188] [2022-12-14 07:39:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:35,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:36,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:36,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337584188] [2022-12-14 07:39:36,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337584188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:36,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:36,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:39:36,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385282059] [2022-12-14 07:39:36,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:36,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:39:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:39:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:39:36,064 INFO L87 Difference]: Start difference. First operand 333 states and 402 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:36,218 INFO L93 Difference]: Finished difference Result 456 states and 553 transitions. [2022-12-14 07:39:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:39:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-12-14 07:39:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:36,219 INFO L225 Difference]: With dead ends: 456 [2022-12-14 07:39:36,220 INFO L226 Difference]: Without dead ends: 284 [2022-12-14 07:39:36,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:39:36,221 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 996 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:36,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 199 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:39:36,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-12-14 07:39:36,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-12-14 07:39:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 273 states have (on average 1.26007326007326) internal successors, (344), 283 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 344 transitions. [2022-12-14 07:39:36,239 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 344 transitions. Word has length 59 [2022-12-14 07:39:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:36,239 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 344 transitions. [2022-12-14 07:39:36,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 344 transitions. [2022-12-14 07:39:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 07:39:36,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:36,241 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] [2022-12-14 07:39:36,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:39:36,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:36,242 INFO L85 PathProgramCache]: Analyzing trace with hash -732780502, now seen corresponding path program 1 times [2022-12-14 07:39:36,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:36,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416785710] [2022-12-14 07:39:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:36,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:36,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:36,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416785710] [2022-12-14 07:39:36,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416785710] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:36,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:36,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:39:36,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257689270] [2022-12-14 07:39:36,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:36,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:39:36,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:36,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:39:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:39:36,343 INFO L87 Difference]: Start difference. First operand 284 states and 344 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:36,493 INFO L93 Difference]: Finished difference Result 389 states and 468 transitions. [2022-12-14 07:39:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:39:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-12-14 07:39:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:36,495 INFO L225 Difference]: With dead ends: 389 [2022-12-14 07:39:36,495 INFO L226 Difference]: Without dead ends: 243 [2022-12-14 07:39:36,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:39:36,497 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 829 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:36,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 185 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:39:36,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-12-14 07:39:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-12-14 07:39:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2586206896551724) internal successors, (292), 242 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 292 transitions. [2022-12-14 07:39:36,507 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 292 transitions. Word has length 61 [2022-12-14 07:39:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:36,508 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 292 transitions. [2022-12-14 07:39:36,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 292 transitions. [2022-12-14 07:39:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 07:39:36,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:36,508 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] [2022-12-14 07:39:36,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:39:36,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1082227329, now seen corresponding path program 1 times [2022-12-14 07:39:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:36,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121236991] [2022-12-14 07:39:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:36,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:36,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:36,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121236991] [2022-12-14 07:39:36,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121236991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:36,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:36,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:39:36,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767190674] [2022-12-14 07:39:36,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:36,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:39:36,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:36,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:39:36,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:39:36,733 INFO L87 Difference]: Start difference. First operand 243 states and 292 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:37,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:37,272 INFO L93 Difference]: Finished difference Result 521 states and 638 transitions. [2022-12-14 07:39:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:39:37,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-12-14 07:39:37,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:37,274 INFO L225 Difference]: With dead ends: 521 [2022-12-14 07:39:37,274 INFO L226 Difference]: Without dead ends: 446 [2022-12-14 07:39:37,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:39:37,275 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 905 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:37,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 826 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:37,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-12-14 07:39:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 243. [2022-12-14 07:39:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2543103448275863) internal successors, (291), 242 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 291 transitions. [2022-12-14 07:39:37,289 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 291 transitions. Word has length 63 [2022-12-14 07:39:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:37,289 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 291 transitions. [2022-12-14 07:39:37,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 291 transitions. [2022-12-14 07:39:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 07:39:37,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:37,290 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] [2022-12-14 07:39:37,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:39:37,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:37,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1413074335, now seen corresponding path program 1 times [2022-12-14 07:39:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:37,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271860453] [2022-12-14 07:39:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:37,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:37,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271860453] [2022-12-14 07:39:37,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271860453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:37,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:37,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:39:37,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674670664] [2022-12-14 07:39:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:37,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:39:37,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:37,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:39:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:39:37,505 INFO L87 Difference]: Start difference. First operand 243 states and 291 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:38,047 INFO L93 Difference]: Finished difference Result 493 states and 602 transitions. [2022-12-14 07:39:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:39:38,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-12-14 07:39:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:38,049 INFO L225 Difference]: With dead ends: 493 [2022-12-14 07:39:38,049 INFO L226 Difference]: Without dead ends: 442 [2022-12-14 07:39:38,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:39:38,050 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1190 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:38,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 950 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-12-14 07:39:38,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 243. [2022-12-14 07:39:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.25) internal successors, (290), 242 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 290 transitions. [2022-12-14 07:39:38,066 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 290 transitions. Word has length 63 [2022-12-14 07:39:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:38,066 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 290 transitions. [2022-12-14 07:39:38,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 290 transitions. [2022-12-14 07:39:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 07:39:38,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:38,067 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] [2022-12-14 07:39:38,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:39:38,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1960661089, now seen corresponding path program 1 times [2022-12-14 07:39:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:38,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340068344] [2022-12-14 07:39:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:38,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:38,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340068344] [2022-12-14 07:39:38,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340068344] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:38,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:38,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:39:38,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036304659] [2022-12-14 07:39:38,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:38,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:39:38,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:38,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:39:38,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:39:38,229 INFO L87 Difference]: Start difference. First operand 243 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:38,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:38,497 INFO L93 Difference]: Finished difference Result 464 states and 544 transitions. [2022-12-14 07:39:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:39:38,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-12-14 07:39:38,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:38,500 INFO L225 Difference]: With dead ends: 464 [2022-12-14 07:39:38,500 INFO L226 Difference]: Without dead ends: 340 [2022-12-14 07:39:38,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-12-14 07:39:38,501 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1338 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:38,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 422 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:39:38,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-12-14 07:39:38,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 243. [2022-12-14 07:39:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2456896551724137) internal successors, (289), 242 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 289 transitions. [2022-12-14 07:39:38,525 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 289 transitions. Word has length 63 [2022-12-14 07:39:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:38,525 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 289 transitions. [2022-12-14 07:39:38,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 289 transitions. [2022-12-14 07:39:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 07:39:38,526 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:38,526 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] [2022-12-14 07:39:38,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:39:38,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash 718759200, now seen corresponding path program 1 times [2022-12-14 07:39:38,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:38,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758884126] [2022-12-14 07:39:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:38,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:38,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758884126] [2022-12-14 07:39:38,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758884126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:38,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:38,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:39:38,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910770820] [2022-12-14 07:39:38,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:38,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:39:38,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:38,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:39:38,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:39:38,691 INFO L87 Difference]: Start difference. First operand 243 states and 289 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:39,187 INFO L93 Difference]: Finished difference Result 474 states and 571 transitions. [2022-12-14 07:39:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:39:39,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-12-14 07:39:39,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:39,190 INFO L225 Difference]: With dead ends: 474 [2022-12-14 07:39:39,190 INFO L226 Difference]: Without dead ends: 434 [2022-12-14 07:39:39,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:39:39,191 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 841 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:39,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 844 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:39,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-12-14 07:39:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2022-12-14 07:39:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2413793103448276) internal successors, (288), 242 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2022-12-14 07:39:39,214 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 64 [2022-12-14 07:39:39,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:39,214 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2022-12-14 07:39:39,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2022-12-14 07:39:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 07:39:39,215 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:39,215 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] [2022-12-14 07:39:39,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 07:39:39,215 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:39,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1193853636, now seen corresponding path program 1 times [2022-12-14 07:39:39,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:39,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167689496] [2022-12-14 07:39:39,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:39,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:39,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:39,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167689496] [2022-12-14 07:39:39,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167689496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:39,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:39,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:39:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271936019] [2022-12-14 07:39:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:39,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:39:39,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:39:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:39:39,424 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:39,983 INFO L93 Difference]: Finished difference Result 461 states and 555 transitions. [2022-12-14 07:39:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:39:39,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-12-14 07:39:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:39,984 INFO L225 Difference]: With dead ends: 461 [2022-12-14 07:39:39,984 INFO L226 Difference]: Without dead ends: 442 [2022-12-14 07:39:39,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:39:39,985 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1159 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:39,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 987 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:39,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-12-14 07:39:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 243. [2022-12-14 07:39:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2370689655172413) internal successors, (287), 242 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 287 transitions. [2022-12-14 07:39:40,009 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 287 transitions. Word has length 65 [2022-12-14 07:39:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:40,009 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 287 transitions. [2022-12-14 07:39:40,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 287 transitions. [2022-12-14 07:39:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 07:39:40,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:40,010 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] [2022-12-14 07:39:40,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:39:40,010 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:40,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:40,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1508275324, now seen corresponding path program 1 times [2022-12-14 07:39:40,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:40,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552867056] [2022-12-14 07:39:40,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:40,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:40,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:40,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552867056] [2022-12-14 07:39:40,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552867056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:40,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:40,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:39:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937453210] [2022-12-14 07:39:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:40,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:39:40,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:39:40,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:39:40,169 INFO L87 Difference]: Start difference. First operand 243 states and 287 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:40,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:40,656 INFO L93 Difference]: Finished difference Result 440 states and 523 transitions. [2022-12-14 07:39:40,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:39:40,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-12-14 07:39:40,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:40,658 INFO L225 Difference]: With dead ends: 440 [2022-12-14 07:39:40,658 INFO L226 Difference]: Without dead ends: 434 [2022-12-14 07:39:40,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:39:40,659 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 805 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:40,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 924 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-12-14 07:39:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2022-12-14 07:39:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2327586206896552) internal successors, (286), 242 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 286 transitions. [2022-12-14 07:39:40,703 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 286 transitions. Word has length 65 [2022-12-14 07:39:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:40,704 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 286 transitions. [2022-12-14 07:39:40,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 286 transitions. [2022-12-14 07:39:40,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 07:39:40,704 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:40,704 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] [2022-12-14 07:39:40,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 07:39:40,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1207057476, now seen corresponding path program 1 times [2022-12-14 07:39:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:40,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504216173] [2022-12-14 07:39:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:40,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:40,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:40,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504216173] [2022-12-14 07:39:40,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504216173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:40,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:40,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:39:40,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021525828] [2022-12-14 07:39:40,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:40,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:39:40,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:39:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:39:40,869 INFO L87 Difference]: Start difference. First operand 243 states and 286 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:41,367 INFO L93 Difference]: Finished difference Result 527 states and 635 transitions. [2022-12-14 07:39:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:39:41,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-12-14 07:39:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:41,369 INFO L225 Difference]: With dead ends: 527 [2022-12-14 07:39:41,369 INFO L226 Difference]: Without dead ends: 446 [2022-12-14 07:39:41,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:39:41,371 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 770 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:41,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1071 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:41,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-12-14 07:39:41,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 243. [2022-12-14 07:39:41,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.228448275862069) internal successors, (285), 242 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 285 transitions. [2022-12-14 07:39:41,407 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 285 transitions. Word has length 65 [2022-12-14 07:39:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:41,407 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 285 transitions. [2022-12-14 07:39:41,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 285 transitions. [2022-12-14 07:39:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 07:39:41,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:41,408 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] [2022-12-14 07:39:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 07:39:41,408 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:41,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1230734052, now seen corresponding path program 1 times [2022-12-14 07:39:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:41,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136294425] [2022-12-14 07:39:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:41,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:41,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:41,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136294425] [2022-12-14 07:39:41,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136294425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:41,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:41,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:39:41,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565207823] [2022-12-14 07:39:41,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:41,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:39:41,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:39:41,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:39:41,561 INFO L87 Difference]: Start difference. First operand 243 states and 285 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:42,074 INFO L93 Difference]: Finished difference Result 477 states and 570 transitions. [2022-12-14 07:39:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:39:42,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-12-14 07:39:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:42,076 INFO L225 Difference]: With dead ends: 477 [2022-12-14 07:39:42,076 INFO L226 Difference]: Without dead ends: 434 [2022-12-14 07:39:42,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:39:42,077 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 793 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:42,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 935 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:42,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-12-14 07:39:42,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2022-12-14 07:39:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2241379310344827) internal successors, (284), 242 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 284 transitions. [2022-12-14 07:39:42,119 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 284 transitions. Word has length 65 [2022-12-14 07:39:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:42,120 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 284 transitions. [2022-12-14 07:39:42,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 284 transitions. [2022-12-14 07:39:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 07:39:42,120 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:42,120 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] [2022-12-14 07:39:42,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 07:39:42,121 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:42,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash -873801820, now seen corresponding path program 1 times [2022-12-14 07:39:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:42,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775750685] [2022-12-14 07:39:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:42,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:42,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775750685] [2022-12-14 07:39:42,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775750685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:42,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:42,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:39:42,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243709097] [2022-12-14 07:39:42,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:42,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:39:42,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:39:42,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:39:42,278 INFO L87 Difference]: Start difference. First operand 243 states and 284 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:42,783 INFO L93 Difference]: Finished difference Result 498 states and 599 transitions. [2022-12-14 07:39:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:39:42,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-12-14 07:39:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:42,785 INFO L225 Difference]: With dead ends: 498 [2022-12-14 07:39:42,785 INFO L226 Difference]: Without dead ends: 442 [2022-12-14 07:39:42,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:39:42,786 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1060 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:42,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1113 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-12-14 07:39:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 243. [2022-12-14 07:39:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2198275862068966) internal successors, (283), 242 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 283 transitions. [2022-12-14 07:39:42,836 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 283 transitions. Word has length 65 [2022-12-14 07:39:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:42,836 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 283 transitions. [2022-12-14 07:39:42,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:42,836 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 283 transitions. [2022-12-14 07:39:42,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 07:39:42,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:42,837 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] [2022-12-14 07:39:42,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 07:39:42,837 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1099115196, now seen corresponding path program 1 times [2022-12-14 07:39:42,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:42,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597709095] [2022-12-14 07:39:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:42,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:42,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597709095] [2022-12-14 07:39:42,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597709095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:42,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:42,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:39:42,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822571689] [2022-12-14 07:39:42,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:42,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:39:42,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:39:42,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:39:42,975 INFO L87 Difference]: Start difference. First operand 243 states and 283 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:43,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:43,409 INFO L93 Difference]: Finished difference Result 440 states and 519 transitions. [2022-12-14 07:39:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:39:43,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-12-14 07:39:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:43,410 INFO L225 Difference]: With dead ends: 440 [2022-12-14 07:39:43,410 INFO L226 Difference]: Without dead ends: 434 [2022-12-14 07:39:43,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:39:43,411 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1126 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:43,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1002 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:39:43,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-12-14 07:39:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2022-12-14 07:39:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2155172413793103) internal successors, (282), 242 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 282 transitions. [2022-12-14 07:39:43,446 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 282 transitions. Word has length 65 [2022-12-14 07:39:43,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:43,446 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 282 transitions. [2022-12-14 07:39:43,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 282 transitions. [2022-12-14 07:39:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 07:39:43,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:43,447 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] [2022-12-14 07:39:43,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 07:39:43,447 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash 106808155, now seen corresponding path program 1 times [2022-12-14 07:39:43,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:43,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037556563] [2022-12-14 07:39:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:43,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:44,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:44,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037556563] [2022-12-14 07:39:44,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037556563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:44,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:44,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-12-14 07:39:44,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435254078] [2022-12-14 07:39:44,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:44,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 07:39:44,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:44,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 07:39:44,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2022-12-14 07:39:44,718 INFO L87 Difference]: Start difference. First operand 243 states and 282 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:47,778 INFO L93 Difference]: Finished difference Result 751 states and 871 transitions. [2022-12-14 07:39:47,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 07:39:47,778 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-12-14 07:39:47,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:47,780 INFO L225 Difference]: With dead ends: 751 [2022-12-14 07:39:47,780 INFO L226 Difference]: Without dead ends: 713 [2022-12-14 07:39:47,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=315, Invalid=1847, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 07:39:47,781 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 2128 mSDsluCounter, 7353 mSDsCounter, 0 mSdLazyCounter, 3738 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:47,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 7876 Invalid, 3738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3738 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 07:39:47,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-12-14 07:39:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 258. [2022-12-14 07:39:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 247 states have (on average 1.222672064777328) internal successors, (302), 257 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 302 transitions. [2022-12-14 07:39:47,840 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 302 transitions. Word has length 66 [2022-12-14 07:39:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:47,841 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 302 transitions. [2022-12-14 07:39:47,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 302 transitions. [2022-12-14 07:39:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 07:39:47,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:47,841 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] [2022-12-14 07:39:47,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 07:39:47,842 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -543233893, now seen corresponding path program 1 times [2022-12-14 07:39:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:47,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116207833] [2022-12-14 07:39:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:47,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:48,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:48,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116207833] [2022-12-14 07:39:48,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116207833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:48,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:48,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 07:39:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494595500] [2022-12-14 07:39:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:48,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 07:39:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 07:39:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:39:48,166 INFO L87 Difference]: Start difference. First operand 258 states and 302 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:48,860 INFO L93 Difference]: Finished difference Result 544 states and 633 transitions. [2022-12-14 07:39:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 07:39:48,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-12-14 07:39:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:48,861 INFO L225 Difference]: With dead ends: 544 [2022-12-14 07:39:48,861 INFO L226 Difference]: Without dead ends: 437 [2022-12-14 07:39:48,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-12-14 07:39:48,862 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1320 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:48,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 954 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:39:48,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-12-14 07:39:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 188. [2022-12-14 07:39:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 181 states have (on average 1.2044198895027625) internal successors, (218), 187 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 218 transitions. [2022-12-14 07:39:48,907 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 218 transitions. Word has length 66 [2022-12-14 07:39:48,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:48,907 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 218 transitions. [2022-12-14 07:39:48,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:48,907 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 218 transitions. [2022-12-14 07:39:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 07:39:48,907 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:48,907 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] [2022-12-14 07:39:48,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 07:39:48,908 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:48,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:48,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1410161897, now seen corresponding path program 1 times [2022-12-14 07:39:48,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:48,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179542238] [2022-12-14 07:39:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:48,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:49,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:49,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179542238] [2022-12-14 07:39:49,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179542238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:49,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:49,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 07:39:49,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447767158] [2022-12-14 07:39:49,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:49,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:39:49,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:39:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:39:49,275 INFO L87 Difference]: Start difference. First operand 188 states and 218 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:50,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:50,066 INFO L93 Difference]: Finished difference Result 480 states and 585 transitions. [2022-12-14 07:39:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 07:39:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-12-14 07:39:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:50,068 INFO L225 Difference]: With dead ends: 480 [2022-12-14 07:39:50,068 INFO L226 Difference]: Without dead ends: 426 [2022-12-14 07:39:50,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-14 07:39:50,069 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 890 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:50,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 2063 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:39:50,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-12-14 07:39:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 171. [2022-12-14 07:39:50,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.1927710843373494) internal successors, (198), 170 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 198 transitions. [2022-12-14 07:39:50,119 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 198 transitions. Word has length 67 [2022-12-14 07:39:50,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:50,119 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 198 transitions. [2022-12-14 07:39:50,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 198 transitions. [2022-12-14 07:39:50,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 07:39:50,120 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:50,120 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] [2022-12-14 07:39:50,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 07:39:50,120 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:50,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash 866774441, now seen corresponding path program 1 times [2022-12-14 07:39:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:50,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726898097] [2022-12-14 07:39:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:50,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:50,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726898097] [2022-12-14 07:39:50,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726898097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:50,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:50,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 07:39:50,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219905975] [2022-12-14 07:39:50,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:50,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 07:39:50,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 07:39:50,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:39:50,802 INFO L87 Difference]: Start difference. First operand 171 states and 198 transitions. Second operand has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:52,535 INFO L93 Difference]: Finished difference Result 500 states and 580 transitions. [2022-12-14 07:39:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 07:39:52,536 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-12-14 07:39:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:52,537 INFO L225 Difference]: With dead ends: 500 [2022-12-14 07:39:52,537 INFO L226 Difference]: Without dead ends: 487 [2022-12-14 07:39:52,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=1118, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 07:39:52,538 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1555 mSDsluCounter, 3873 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:52,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 4190 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 07:39:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-12-14 07:39:52,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 178. [2022-12-14 07:39:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 177 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 206 transitions. [2022-12-14 07:39:52,590 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 206 transitions. Word has length 67 [2022-12-14 07:39:52,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:52,590 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 206 transitions. [2022-12-14 07:39:52,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 206 transitions. [2022-12-14 07:39:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 07:39:52,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:52,591 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] [2022-12-14 07:39:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 07:39:52,591 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1780474025, now seen corresponding path program 1 times [2022-12-14 07:39:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:52,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211580356] [2022-12-14 07:39:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:52,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:53,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:53,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211580356] [2022-12-14 07:39:53,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211580356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:53,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:53,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 07:39:53,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073842636] [2022-12-14 07:39:53,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:53,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 07:39:53,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:53,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 07:39:53,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-12-14 07:39:53,187 INFO L87 Difference]: Start difference. First operand 178 states and 206 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:54,969 INFO L93 Difference]: Finished difference Result 485 states and 565 transitions. [2022-12-14 07:39:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 07:39:54,970 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-12-14 07:39:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:54,971 INFO L225 Difference]: With dead ends: 485 [2022-12-14 07:39:54,971 INFO L226 Difference]: Without dead ends: 478 [2022-12-14 07:39:54,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=1382, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 07:39:54,972 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 923 mSDsluCounter, 4242 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:54,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 4560 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 07:39:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-12-14 07:39:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 178. [2022-12-14 07:39:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.1849710982658959) internal successors, (205), 177 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2022-12-14 07:39:55,027 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 67 [2022-12-14 07:39:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:55,027 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2022-12-14 07:39:55,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2022-12-14 07:39:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 07:39:55,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:55,028 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] [2022-12-14 07:39:55,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 07:39:55,028 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash -588581152, now seen corresponding path program 1 times [2022-12-14 07:39:55,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:55,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433828248] [2022-12-14 07:39:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:55,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:55,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:55,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433828248] [2022-12-14 07:39:55,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433828248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:55,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:55,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-14 07:39:55,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745769029] [2022-12-14 07:39:55,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:55,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 07:39:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:55,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 07:39:55,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-14 07:39:55,543 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:56,742 INFO L93 Difference]: Finished difference Result 508 states and 608 transitions. [2022-12-14 07:39:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 07:39:56,742 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-12-14 07:39:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:56,744 INFO L225 Difference]: With dead ends: 508 [2022-12-14 07:39:56,744 INFO L226 Difference]: Without dead ends: 435 [2022-12-14 07:39:56,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2022-12-14 07:39:56,745 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 873 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:56,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 3060 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:39:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-12-14 07:39:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 169. [2022-12-14 07:39:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 164 states have (on average 1.1646341463414633) internal successors, (191), 168 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 191 transitions. [2022-12-14 07:39:56,804 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 191 transitions. Word has length 67 [2022-12-14 07:39:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:56,805 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 191 transitions. [2022-12-14 07:39:56,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 191 transitions. [2022-12-14 07:39:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 07:39:56,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:56,805 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] [2022-12-14 07:39:56,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 07:39:56,805 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash 183577999, now seen corresponding path program 1 times [2022-12-14 07:39:56,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:56,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622347446] [2022-12-14 07:39:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:57,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:57,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622347446] [2022-12-14 07:39:57,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622347446] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:57,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:57,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-14 07:39:57,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459146313] [2022-12-14 07:39:57,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:57,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 07:39:57,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:57,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 07:39:57,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-12-14 07:39:57,323 INFO L87 Difference]: Start difference. First operand 169 states and 191 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:58,795 INFO L93 Difference]: Finished difference Result 416 states and 484 transitions. [2022-12-14 07:39:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 07:39:58,795 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-12-14 07:39:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:58,796 INFO L225 Difference]: With dead ends: 416 [2022-12-14 07:39:58,796 INFO L226 Difference]: Without dead ends: 412 [2022-12-14 07:39:58,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 07:39:58,797 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1071 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:58,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 2793 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 07:39:58,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-12-14 07:39:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 164. [2022-12-14 07:39:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.1625) internal successors, (186), 163 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 186 transitions. [2022-12-14 07:39:58,863 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 186 transitions. Word has length 68 [2022-12-14 07:39:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:58,863 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 186 transitions. [2022-12-14 07:39:58,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 186 transitions. [2022-12-14 07:39:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 07:39:58,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:58,864 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] [2022-12-14 07:39:58,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 07:39:58,864 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash 734420341, now seen corresponding path program 1 times [2022-12-14 07:39:58,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:58,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954963668] [2022-12-14 07:39:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:58,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:59,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:59,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954963668] [2022-12-14 07:39:59,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954963668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:59,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:59,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 07:39:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802467777] [2022-12-14 07:39:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:39:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:39:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:39:59,135 INFO L87 Difference]: Start difference. First operand 164 states and 186 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:59,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:59,837 INFO L93 Difference]: Finished difference Result 359 states and 426 transitions. [2022-12-14 07:39:59,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 07:39:59,837 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-12-14 07:39:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:59,838 INFO L225 Difference]: With dead ends: 359 [2022-12-14 07:39:59,839 INFO L226 Difference]: Without dead ends: 322 [2022-12-14 07:39:59,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-14 07:39:59,839 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 780 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:59,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1750 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:39:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-12-14 07:39:59,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 120. [2022-12-14 07:39:59,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.1610169491525424) internal successors, (137), 119 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 137 transitions. [2022-12-14 07:39:59,895 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 137 transitions. Word has length 68 [2022-12-14 07:39:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:59,895 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 137 transitions. [2022-12-14 07:39:59,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:39:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 137 transitions. [2022-12-14 07:39:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 07:39:59,896 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:59,896 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] [2022-12-14 07:39:59,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 07:39:59,896 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:39:59,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash -535879959, now seen corresponding path program 1 times [2022-12-14 07:39:59,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:59,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977742950] [2022-12-14 07:39:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:59,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:00,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:00,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977742950] [2022-12-14 07:40:00,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977742950] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:00,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:00,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:40:00,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388051518] [2022-12-14 07:40:00,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:00,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:40:00,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:00,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:40:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:40:00,009 INFO L87 Difference]: Start difference. First operand 120 states and 137 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:00,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:00,398 INFO L93 Difference]: Finished difference Result 244 states and 289 transitions. [2022-12-14 07:40:00,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 07:40:00,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-12-14 07:40:00,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:00,399 INFO L225 Difference]: With dead ends: 244 [2022-12-14 07:40:00,399 INFO L226 Difference]: Without dead ends: 187 [2022-12-14 07:40:00,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-14 07:40:00,400 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 357 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:00,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 402 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:40:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-12-14 07:40:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 120. [2022-12-14 07:40:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.152542372881356) internal successors, (136), 119 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 136 transitions. [2022-12-14 07:40:00,452 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 136 transitions. Word has length 69 [2022-12-14 07:40:00,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:00,452 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 136 transitions. [2022-12-14 07:40:00,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 136 transitions. [2022-12-14 07:40:00,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 07:40:00,453 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:00,453 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] [2022-12-14 07:40:00,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 07:40:00,453 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:00,453 INFO L85 PathProgramCache]: Analyzing trace with hash 134483598, now seen corresponding path program 1 times [2022-12-14 07:40:00,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:00,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463732641] [2022-12-14 07:40:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:01,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:01,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463732641] [2022-12-14 07:40:01,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463732641] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:01,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:01,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 07:40:01,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720995748] [2022-12-14 07:40:01,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:01,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 07:40:01,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:01,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 07:40:01,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-12-14 07:40:01,193 INFO L87 Difference]: Start difference. First operand 120 states and 136 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:03,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:03,718 INFO L93 Difference]: Finished difference Result 555 states and 671 transitions. [2022-12-14 07:40:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 07:40:03,719 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-12-14 07:40:03,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:03,720 INFO L225 Difference]: With dead ends: 555 [2022-12-14 07:40:03,720 INFO L226 Difference]: Without dead ends: 549 [2022-12-14 07:40:03,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 07:40:03,721 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1133 mSDsluCounter, 5085 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 5444 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:03,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 5444 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 07:40:03,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-12-14 07:40:03,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 139. [2022-12-14 07:40:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 137 states have (on average 1.1605839416058394) internal successors, (159), 138 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 159 transitions. [2022-12-14 07:40:03,794 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 159 transitions. Word has length 71 [2022-12-14 07:40:03,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:03,794 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 159 transitions. [2022-12-14 07:40:03,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 159 transitions. [2022-12-14 07:40:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 07:40:03,794 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:03,794 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] [2022-12-14 07:40:03,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 07:40:03,795 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:03,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1358946869, now seen corresponding path program 1 times [2022-12-14 07:40:03,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:03,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815143862] [2022-12-14 07:40:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:03,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:04,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:04,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815143862] [2022-12-14 07:40:04,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815143862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:04,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:04,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 07:40:04,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939130013] [2022-12-14 07:40:04,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:04,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:40:04,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:40:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:40:04,088 INFO L87 Difference]: Start difference. First operand 139 states and 159 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:04,911 INFO L93 Difference]: Finished difference Result 281 states and 337 transitions. [2022-12-14 07:40:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 07:40:04,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-12-14 07:40:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:04,913 INFO L225 Difference]: With dead ends: 281 [2022-12-14 07:40:04,913 INFO L226 Difference]: Without dead ends: 275 [2022-12-14 07:40:04,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2022-12-14 07:40:04,914 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 569 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:04,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1408 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:40:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-12-14 07:40:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 114. [2022-12-14 07:40:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1504424778761062) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2022-12-14 07:40:04,973 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 72 [2022-12-14 07:40:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:04,973 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2022-12-14 07:40:04,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2022-12-14 07:40:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 07:40:04,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:04,973 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] [2022-12-14 07:40:04,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 07:40:04,974 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:04,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:04,974 INFO L85 PathProgramCache]: Analyzing trace with hash -606084081, now seen corresponding path program 1 times [2022-12-14 07:40:04,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:04,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933065798] [2022-12-14 07:40:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:05,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:05,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933065798] [2022-12-14 07:40:05,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933065798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:05,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:05,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:40:05,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34872775] [2022-12-14 07:40:05,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:05,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:40:05,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:05,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:40:05,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:05,037 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:05,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:05,172 INFO L93 Difference]: Finished difference Result 188 states and 226 transitions. [2022-12-14 07:40:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:40:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-12-14 07:40:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:05,173 INFO L225 Difference]: With dead ends: 188 [2022-12-14 07:40:05,173 INFO L226 Difference]: Without dead ends: 151 [2022-12-14 07:40:05,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:05,173 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 53 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:05,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 243 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:40:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-14 07:40:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2022-12-14 07:40:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.1875) internal successors, (171), 144 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2022-12-14 07:40:05,272 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 87 [2022-12-14 07:40:05,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:05,273 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2022-12-14 07:40:05,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2022-12-14 07:40:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 07:40:05,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:05,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:40:05,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 07:40:05,273 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:05,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1933536821, now seen corresponding path program 1 times [2022-12-14 07:40:05,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:05,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347714693] [2022-12-14 07:40:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:05,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:05,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:05,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347714693] [2022-12-14 07:40:05,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347714693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:05,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:05,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:40:05,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190276626] [2022-12-14 07:40:05,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:05,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:40:05,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:40:05,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:05,331 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:05,554 INFO L93 Difference]: Finished difference Result 281 states and 349 transitions. [2022-12-14 07:40:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:40:05,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-12-14 07:40:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:05,555 INFO L225 Difference]: With dead ends: 281 [2022-12-14 07:40:05,555 INFO L226 Difference]: Without dead ends: 213 [2022-12-14 07:40:05,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:05,556 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 46 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:05,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 244 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:40:05,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-14 07:40:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2022-12-14 07:40:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.2227722772277227) internal successors, (247), 202 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 247 transitions. [2022-12-14 07:40:05,722 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 247 transitions. Word has length 90 [2022-12-14 07:40:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:05,723 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 247 transitions. [2022-12-14 07:40:05,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 247 transitions. [2022-12-14 07:40:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 07:40:05,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:05,723 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] [2022-12-14 07:40:05,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 07:40:05,723 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:05,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:05,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1453338523, now seen corresponding path program 1 times [2022-12-14 07:40:05,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:05,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903781023] [2022-12-14 07:40:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:05,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:05,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903781023] [2022-12-14 07:40:05,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903781023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:05,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:05,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:40:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855416483] [2022-12-14 07:40:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:05,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:40:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:40:05,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:05,788 INFO L87 Difference]: Start difference. First operand 203 states and 247 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:06,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:06,132 INFO L93 Difference]: Finished difference Result 455 states and 577 transitions. [2022-12-14 07:40:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:40:06,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-12-14 07:40:06,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:06,133 INFO L225 Difference]: With dead ends: 455 [2022-12-14 07:40:06,133 INFO L226 Difference]: Without dead ends: 329 [2022-12-14 07:40:06,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:06,134 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 39 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:06,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 245 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:40:06,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-12-14 07:40:06,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 311. [2022-12-14 07:40:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.2483870967741935) internal successors, (387), 310 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 387 transitions. [2022-12-14 07:40:06,431 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 387 transitions. Word has length 93 [2022-12-14 07:40:06,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:06,431 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 387 transitions. [2022-12-14 07:40:06,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:06,431 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 387 transitions. [2022-12-14 07:40:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 07:40:06,431 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:06,432 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] [2022-12-14 07:40:06,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 07:40:06,432 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1999538379, now seen corresponding path program 1 times [2022-12-14 07:40:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:06,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663835176] [2022-12-14 07:40:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:06,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:06,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663835176] [2022-12-14 07:40:06,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663835176] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:06,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:06,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:40:06,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358563540] [2022-12-14 07:40:06,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:06,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:40:06,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:40:06,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:06,494 INFO L87 Difference]: Start difference. First operand 311 states and 387 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:07,141 INFO L93 Difference]: Finished difference Result 779 states and 997 transitions. [2022-12-14 07:40:07,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:40:07,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-12-14 07:40:07,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:07,142 INFO L225 Difference]: With dead ends: 779 [2022-12-14 07:40:07,143 INFO L226 Difference]: Without dead ends: 545 [2022-12-14 07:40:07,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:07,143 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 29 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:07,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 246 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:40:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-12-14 07:40:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 511. [2022-12-14 07:40:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.2607843137254902) internal successors, (643), 510 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 643 transitions. [2022-12-14 07:40:07,725 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 643 transitions. Word has length 96 [2022-12-14 07:40:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:07,726 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 643 transitions. [2022-12-14 07:40:07,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 643 transitions. [2022-12-14 07:40:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 07:40:07,726 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:07,726 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] [2022-12-14 07:40:07,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 07:40:07,726 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:07,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1002635342, now seen corresponding path program 1 times [2022-12-14 07:40:07,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:07,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772831998] [2022-12-14 07:40:07,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:07,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:07,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:07,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772831998] [2022-12-14 07:40:07,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772831998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:07,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:07,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:40:07,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916926504] [2022-12-14 07:40:07,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:07,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:40:07,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:40:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:40:07,796 INFO L87 Difference]: Start difference. First operand 511 states and 643 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:09,811 INFO L93 Difference]: Finished difference Result 1936 states and 2462 transitions. [2022-12-14 07:40:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:40:09,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-12-14 07:40:09,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:09,815 INFO L225 Difference]: With dead ends: 1936 [2022-12-14 07:40:09,815 INFO L226 Difference]: Without dead ends: 1502 [2022-12-14 07:40:09,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-14 07:40:09,816 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 535 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:09,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 767 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:40:09,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-12-14 07:40:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 732. [2022-12-14 07:40:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.2476060191518468) internal successors, (912), 731 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 912 transitions. [2022-12-14 07:40:10,669 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 912 transitions. Word has length 99 [2022-12-14 07:40:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:10,669 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 912 transitions. [2022-12-14 07:40:10,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 912 transitions. [2022-12-14 07:40:10,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 07:40:10,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:10,670 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] [2022-12-14 07:40:10,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 07:40:10,670 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash 487787018, now seen corresponding path program 1 times [2022-12-14 07:40:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:10,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006681448] [2022-12-14 07:40:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:10,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:10,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:10,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006681448] [2022-12-14 07:40:10,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006681448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:10,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:10,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:40:10,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246809462] [2022-12-14 07:40:10,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:10,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:40:10,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:40:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:40:10,829 INFO L87 Difference]: Start difference. First operand 732 states and 912 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:11,816 INFO L93 Difference]: Finished difference Result 1389 states and 1743 transitions. [2022-12-14 07:40:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:40:11,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-12-14 07:40:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:11,818 INFO L225 Difference]: With dead ends: 1389 [2022-12-14 07:40:11,818 INFO L226 Difference]: Without dead ends: 734 [2022-12-14 07:40:11,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:40:11,819 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 68 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:11,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 253 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:40:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-12-14 07:40:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 732. [2022-12-14 07:40:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.2462380300957592) internal successors, (911), 731 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 911 transitions. [2022-12-14 07:40:12,679 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 911 transitions. Word has length 101 [2022-12-14 07:40:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:12,679 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 911 transitions. [2022-12-14 07:40:12,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 911 transitions. [2022-12-14 07:40:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 07:40:12,680 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:12,680 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] [2022-12-14 07:40:12,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 07:40:12,680 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:12,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1847468716, now seen corresponding path program 1 times [2022-12-14 07:40:12,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:12,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338942730] [2022-12-14 07:40:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:12,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:12,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338942730] [2022-12-14 07:40:12,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338942730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:12,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:12,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:40:12,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333058374] [2022-12-14 07:40:12,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:12,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:40:12,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:12,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:40:12,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:12,717 INFO L87 Difference]: Start difference. First operand 732 states and 911 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:13,951 INFO L93 Difference]: Finished difference Result 1661 states and 2085 transitions. [2022-12-14 07:40:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:40:13,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-12-14 07:40:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:13,954 INFO L225 Difference]: With dead ends: 1661 [2022-12-14 07:40:13,954 INFO L226 Difference]: Without dead ends: 1006 [2022-12-14 07:40:13,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:13,955 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 64 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:13,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 192 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:40:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-12-14 07:40:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1004. [2022-12-14 07:40:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.2422731804586242) internal successors, (1246), 1003 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1246 transitions. [2022-12-14 07:40:15,162 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1246 transitions. Word has length 101 [2022-12-14 07:40:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:15,162 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1246 transitions. [2022-12-14 07:40:15,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1246 transitions. [2022-12-14 07:40:15,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 07:40:15,163 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:15,163 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] [2022-12-14 07:40:15,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 07:40:15,163 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash -478179870, now seen corresponding path program 1 times [2022-12-14 07:40:15,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:15,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621348951] [2022-12-14 07:40:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:15,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:15,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621348951] [2022-12-14 07:40:15,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621348951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:15,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:15,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:40:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905989639] [2022-12-14 07:40:15,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:15,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:40:15,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:15,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:40:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:40:15,299 INFO L87 Difference]: Start difference. First operand 1004 states and 1246 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:17,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:17,259 INFO L93 Difference]: Finished difference Result 1353 states and 1669 transitions. [2022-12-14 07:40:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 07:40:17,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-12-14 07:40:17,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:17,262 INFO L225 Difference]: With dead ends: 1353 [2022-12-14 07:40:17,262 INFO L226 Difference]: Without dead ends: 1351 [2022-12-14 07:40:17,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-14 07:40:17,262 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 276 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:17,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 780 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:40:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2022-12-14 07:40:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1004. [2022-12-14 07:40:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.226321036889332) internal successors, (1230), 1003 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1230 transitions. [2022-12-14 07:40:18,481 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1230 transitions. Word has length 102 [2022-12-14 07:40:18,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:18,482 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1230 transitions. [2022-12-14 07:40:18,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1230 transitions. [2022-12-14 07:40:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-14 07:40:18,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:18,482 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:40:18,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 07:40:18,482 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash -623509692, now seen corresponding path program 1 times [2022-12-14 07:40:18,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:18,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191255931] [2022-12-14 07:40:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:18,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 07:40:18,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:18,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191255931] [2022-12-14 07:40:18,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191255931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:18,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:18,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:40:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497161154] [2022-12-14 07:40:18,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:18,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:40:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:40:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:40:18,633 INFO L87 Difference]: Start difference. First operand 1004 states and 1230 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:20,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:20,861 INFO L93 Difference]: Finished difference Result 2495 states and 3071 transitions. [2022-12-14 07:40:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 07:40:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-12-14 07:40:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:20,864 INFO L225 Difference]: With dead ends: 2495 [2022-12-14 07:40:20,864 INFO L226 Difference]: Without dead ends: 1561 [2022-12-14 07:40:20,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-14 07:40:20,865 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 440 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:20,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 356 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:40:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2022-12-14 07:40:22,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1004. [2022-12-14 07:40:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.2253240279162512) internal successors, (1229), 1003 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1229 transitions. [2022-12-14 07:40:22,097 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1229 transitions. Word has length 118 [2022-12-14 07:40:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:22,097 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1229 transitions. [2022-12-14 07:40:22,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1229 transitions. [2022-12-14 07:40:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-14 07:40:22,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:22,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:40:22,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-14 07:40:22,098 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:22,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2029975393, now seen corresponding path program 1 times [2022-12-14 07:40:22,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:22,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138059053] [2022-12-14 07:40:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:22,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 07:40:22,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:22,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138059053] [2022-12-14 07:40:22,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138059053] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:22,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:22,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 07:40:22,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635869317] [2022-12-14 07:40:22,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:22,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 07:40:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:22,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 07:40:22,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:40:22,872 INFO L87 Difference]: Start difference. First operand 1004 states and 1229 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:27,953 INFO L93 Difference]: Finished difference Result 3782 states and 4654 transitions. [2022-12-14 07:40:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 07:40:27,954 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-12-14 07:40:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:27,958 INFO L225 Difference]: With dead ends: 3782 [2022-12-14 07:40:27,958 INFO L226 Difference]: Without dead ends: 2847 [2022-12-14 07:40:27,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 07:40:27,960 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1000 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:27,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 3275 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 07:40:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2022-12-14 07:40:29,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1022. [2022-12-14 07:40:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 1.2233104799216454) internal successors, (1249), 1021 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1249 transitions. [2022-12-14 07:40:29,292 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1249 transitions. Word has length 120 [2022-12-14 07:40:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:29,293 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1249 transitions. [2022-12-14 07:40:29,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:40:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1249 transitions. [2022-12-14 07:40:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 07:40:29,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:29,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:40:29,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-14 07:40:29,294 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 07:40:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:29,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1302073409, now seen corresponding path program 1 times [2022-12-14 07:40:29,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:29,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913972359] [2022-12-14 07:40:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:29,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:32,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:32,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913972359] [2022-12-14 07:40:32,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913972359] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:40:32,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401240985] [2022-12-14 07:40:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:32,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:40:32,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:40:32,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:40:32,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ab9345-847c-40a3-9e2c-7e2a55cde3d5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:40:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:32,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-14 07:40:32,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:40:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:40,103 INFO L328 TraceCheckSpWp]: Computing backward predicates...