./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92ab77284c41e8949aa8a67882902909eedb25047f32a3303bcd08767adce507 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:00:32,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:00:32,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:00:32,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:00:32,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:00:32,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:00:32,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:00:32,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:00:32,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:00:32,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:00:32,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:00:32,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:00:32,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:00:32,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:00:32,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:00:32,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:00:32,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:00:32,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:00:32,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:00:32,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:00:32,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:00:32,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:00:32,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:00:32,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:00:32,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:00:32,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:00:32,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:00:32,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:00:32,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:00:32,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:00:32,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:00:32,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:00:32,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:00:32,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:00:32,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:00:32,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:00:32,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:00:32,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:00:32,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:00:32,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:00:32,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:00:32,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:00:32,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:00:32,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:00:32,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:00:32,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:00:32,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:00:32,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:00:32,563 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:00:32,563 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:00:32,563 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:00:32,564 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:00:32,565 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:00:32,565 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:00:32,566 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:00:32,566 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:00:32,566 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:00:32,567 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:00:32,567 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:00:32,567 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:00:32,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:00:32,568 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:00:32,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:00:32,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:00:32,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:00:32,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:00:32,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:00:32,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:00:32,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:00:32,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:00:32,571 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:00:32,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:00:32,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:00:32,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:00:32,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:00:32,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:00:32,573 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:00:32,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:00:32,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:00:32,574 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:00:32,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:00:32,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:00:32,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:00:32,575 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ab77284c41e8949aa8a67882902909eedb25047f32a3303bcd08767adce507 [2022-11-20 20:00:32,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:00:32,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:00:32,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:00:32,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:00:32,980 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:00:32,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-20 20:00:36,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:00:37,001 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:00:37,002 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-20 20:00:37,081 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/data/0ea96d2e1/40c5118b547148e7b2f851d226cc2e90/FLAGcec0ca60b [2022-11-20 20:00:37,106 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/data/0ea96d2e1/40c5118b547148e7b2f851d226cc2e90 [2022-11-20 20:00:37,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:00:37,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:00:37,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:00:37,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:00:37,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:00:37,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:00:37" (1/1) ... [2022-11-20 20:00:37,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2e0714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:37, skipping insertion in model container [2022-11-20 20:00:37,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:00:37" (1/1) ... [2022-11-20 20:00:37,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:00:37,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:00:38,126 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2022-11-20 20:00:38,165 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2022-11-20 20:00:38,276 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2022-11-20 20:00:38,326 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2022-11-20 20:00:38,377 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2022-11-20 20:00:38,461 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2022-11-20 20:00:38,513 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2022-11-20 20:00:38,545 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2022-11-20 20:00:38,692 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2022-11-20 20:00:38,702 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2022-11-20 20:00:38,776 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2022-11-20 20:00:38,794 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2022-11-20 20:00:38,876 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2022-11-20 20:00:38,951 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2022-11-20 20:00:39,026 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2022-11-20 20:00:39,095 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2022-11-20 20:00:39,170 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2022-11-20 20:00:39,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:00:39,448 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:00:39,577 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2022-11-20 20:00:39,604 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2022-11-20 20:00:39,672 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2022-11-20 20:00:39,690 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2022-11-20 20:00:39,763 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2022-11-20 20:00:39,788 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2022-11-20 20:00:39,806 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2022-11-20 20:00:39,824 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2022-11-20 20:00:39,906 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2022-11-20 20:00:39,914 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2022-11-20 20:00:39,932 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2022-11-20 20:00:39,945 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2022-11-20 20:00:39,991 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2022-11-20 20:00:40,046 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2022-11-20 20:00:40,098 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2022-11-20 20:00:40,159 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2022-11-20 20:00:40,228 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_1b0d50d3-82aa-4543-ae50-4fdac26693f8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2022-11-20 20:00:40,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:00:40,519 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:00:40,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40 WrapperNode [2022-11-20 20:00:40,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:00:40,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:00:40,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:00:40,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:00:40,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:40,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,018 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16771 [2022-11-20 20:00:41,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:00:41,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:00:41,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:00:41,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:00:41,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:00:41,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:00:41,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:00:41,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:00:41,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (1/1) ... [2022-11-20 20:00:41,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:00:41,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:00:41,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:00:41,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0d50d3-82aa-4543-ae50-4fdac26693f8/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:00:41,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:00:41,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:00:41,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:00:41,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:00:42,100 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:00:42,103 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:00:51,599 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:00:53,397 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:00:53,397 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:00:53,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:00:53 BoogieIcfgContainer [2022-11-20 20:00:53,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:00:53,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:00:53,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:00:53,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:00:53,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:00:37" (1/3) ... [2022-11-20 20:00:53,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345bfcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:00:53, skipping insertion in model container [2022-11-20 20:00:53,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:40" (2/3) ... [2022-11-20 20:00:53,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345bfcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:00:53, skipping insertion in model container [2022-11-20 20:00:53,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:00:53" (3/3) ... [2022-11-20 20:00:53,416 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-20 20:00:53,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:00:53,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-11-20 20:00:53,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:00:53,588 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;@4f35ace9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:00:53,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 20:00:53,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 20:00:53,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:53,659 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] [2022-11-20 20:00:53,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:00:53,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash 600254357, now seen corresponding path program 1 times [2022-11-20 20:00:53,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:53,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428063954] [2022-11-20 20:00:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:53,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:54,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:54,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428063954] [2022-11-20 20:00:54,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428063954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:00:54,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:00:54,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:00:54,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890174967] [2022-11-20 20:00:54,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:00:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:00:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:54,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:00:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:00:54,436 INFO L87 Difference]: Start difference. First operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 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 12.6) internal successors, (63), 4 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) [2022-11-20 20:00:58,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:58,454 INFO L93 Difference]: Finished difference Result 5637 states and 10090 transitions. [2022-11-20 20:00:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:00:58,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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 [2022-11-20 20:00:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:58,502 INFO L225 Difference]: With dead ends: 5637 [2022-11-20 20:00:58,503 INFO L226 Difference]: Without dead ends: 3311 [2022-11-20 20:00:58,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:00:58,527 INFO L413 NwaCegarLoop]: 2567 mSDtfsCounter, 16167 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16167 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:58,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16167 Valid, 3202 Invalid, 2809 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 20:00:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2022-11-20 20:00:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3291. [2022-11-20 20:00:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 3274 states have (on average 1.3194868662186927) internal successors, (4320), 3290 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4320 transitions. [2022-11-20 20:00:58,729 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4320 transitions. Word has length 63 [2022-11-20 20:00:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:58,730 INFO L495 AbstractCegarLoop]: Abstraction has 3291 states and 4320 transitions. [2022-11-20 20:00:58,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2022-11-20 20:00:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4320 transitions. [2022-11-20 20:00:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 20:00:58,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:58,738 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] [2022-11-20 20:00:58,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:00:58,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:00:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1509750167, now seen corresponding path program 1 times [2022-11-20 20:00:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:58,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259040151] [2022-11-20 20:00:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:58,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:58,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:58,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259040151] [2022-11-20 20:00:58,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259040151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:00:58,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:00:58,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:00:58,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054538755] [2022-11-20 20:00:58,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:00:58,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:00:58,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:58,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:00:58,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:00:58,980 INFO L87 Difference]: Start difference. First operand 3291 states and 4320 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2022-11-20 20:01:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:02,592 INFO L93 Difference]: Finished difference Result 6332 states and 8314 transitions. [2022-11-20 20:01:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:01:02,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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 [2022-11-20 20:01:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:02,608 INFO L225 Difference]: With dead ends: 6332 [2022-11-20 20:01:02,608 INFO L226 Difference]: Without dead ends: 4332 [2022-11-20 20:01:02,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:01:02,679 INFO L413 NwaCegarLoop]: 1249 mSDtfsCounter, 11169 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11169 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:02,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11169 Valid, 1871 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 20:01:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2022-11-20 20:01:02,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4308. [2022-11-20 20:01:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4291 states have (on average 1.3146119785597763) internal successors, (5641), 4307 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 5641 transitions. [2022-11-20 20:01:02,873 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 5641 transitions. Word has length 63 [2022-11-20 20:01:02,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:02,873 INFO L495 AbstractCegarLoop]: Abstraction has 4308 states and 5641 transitions. [2022-11-20 20:01:02,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2022-11-20 20:01:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 5641 transitions. [2022-11-20 20:01:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 20:01:02,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:02,881 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] [2022-11-20 20:01:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:01:02,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2141976619, now seen corresponding path program 1 times [2022-11-20 20:01:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:02,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606997140] [2022-11-20 20:01:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:02,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:03,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:03,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606997140] [2022-11-20 20:01:03,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606997140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:03,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:03,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:01:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137792723] [2022-11-20 20:01:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:01:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:01:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:01:03,105 INFO L87 Difference]: Start difference. First operand 4308 states and 5641 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2022-11-20 20:01:06,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:06,177 INFO L93 Difference]: Finished difference Result 8650 states and 11301 transitions. [2022-11-20 20:01:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:01:06,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 [2022-11-20 20:01:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:06,202 INFO L225 Difference]: With dead ends: 8650 [2022-11-20 20:01:06,203 INFO L226 Difference]: Without dead ends: 5867 [2022-11-20 20:01:06,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:01:06,209 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 9682 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9682 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:06,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9682 Valid, 1727 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 20:01:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2022-11-20 20:01:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5840. [2022-11-20 20:01:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5823 states have (on average 1.3123819337111455) internal successors, (7642), 5839 states have internal predecessors, (7642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 7642 transitions. [2022-11-20 20:01:06,736 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 7642 transitions. Word has length 64 [2022-11-20 20:01:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:06,738 INFO L495 AbstractCegarLoop]: Abstraction has 5840 states and 7642 transitions. [2022-11-20 20:01:06,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2022-11-20 20:01:06,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 7642 transitions. [2022-11-20 20:01:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 20:01:06,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:06,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:01:06,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:01:06,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash 767039615, now seen corresponding path program 1 times [2022-11-20 20:01:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:06,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098637046] [2022-11-20 20:01:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:07,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:07,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098637046] [2022-11-20 20:01:07,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098637046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:07,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:07,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:01:07,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576812883] [2022-11-20 20:01:07,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:07,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:01:07,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:01:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:01:07,039 INFO L87 Difference]: Start difference. First operand 5840 states and 7642 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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) [2022-11-20 20:01:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:09,379 INFO L93 Difference]: Finished difference Result 11150 states and 14652 transitions. [2022-11-20 20:01:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:01:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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 [2022-11-20 20:01:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:09,405 INFO L225 Difference]: With dead ends: 11150 [2022-11-20 20:01:09,405 INFO L226 Difference]: Without dead ends: 7338 [2022-11-20 20:01:09,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:01:09,411 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 8123 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8123 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:09,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8123 Valid, 1483 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 20:01:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7338 states. [2022-11-20 20:01:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7338 to 7303. [2022-11-20 20:01:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7286 states have (on average 1.3192423826516608) internal successors, (9612), 7302 states have internal predecessors, (9612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 9612 transitions. [2022-11-20 20:01:09,839 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 9612 transitions. Word has length 65 [2022-11-20 20:01:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:09,840 INFO L495 AbstractCegarLoop]: Abstraction has 7303 states and 9612 transitions. [2022-11-20 20:01:09,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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) [2022-11-20 20:01:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 9612 transitions. [2022-11-20 20:01:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 20:01:09,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:09,852 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] [2022-11-20 20:01:09,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:01:09,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:09,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:09,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1941175905, now seen corresponding path program 1 times [2022-11-20 20:01:09,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:09,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086125453] [2022-11-20 20:01:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:09,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:10,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:10,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086125453] [2022-11-20 20:01:10,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086125453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:10,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:10,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:01:10,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040456537] [2022-11-20 20:01:10,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:10,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:01:10,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:01:10,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:01:10,370 INFO L87 Difference]: Start difference. First operand 7303 states and 9612 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) [2022-11-20 20:01:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:15,916 INFO L93 Difference]: Finished difference Result 12557 states and 16727 transitions. [2022-11-20 20:01:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:01:15,916 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 [2022-11-20 20:01:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:15,953 INFO L225 Difference]: With dead ends: 12557 [2022-11-20 20:01:15,954 INFO L226 Difference]: Without dead ends: 11630 [2022-11-20 20:01:15,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:01:15,960 INFO L413 NwaCegarLoop]: 1225 mSDtfsCounter, 10079 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 6430 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10079 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 6564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 6430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:15,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10079 Valid, 5128 Invalid, 6564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 6430 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 20:01:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2022-11-20 20:01:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 7262. [2022-11-20 20:01:16,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7262 states, 7245 states have (on average 1.3189786059351276) internal successors, (9556), 7261 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7262 states to 7262 states and 9556 transitions. [2022-11-20 20:01:16,583 INFO L78 Accepts]: Start accepts. Automaton has 7262 states and 9556 transitions. Word has length 65 [2022-11-20 20:01:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:16,584 INFO L495 AbstractCegarLoop]: Abstraction has 7262 states and 9556 transitions. [2022-11-20 20:01:16,584 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) [2022-11-20 20:01:16,584 INFO L276 IsEmpty]: Start isEmpty. Operand 7262 states and 9556 transitions. [2022-11-20 20:01:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 20:01:16,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:16,596 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] [2022-11-20 20:01:16,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:01:16,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:16,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:16,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1194049603, now seen corresponding path program 1 times [2022-11-20 20:01:16,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:16,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501671896] [2022-11-20 20:01:16,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:16,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:17,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:17,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501671896] [2022-11-20 20:01:17,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501671896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:17,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:17,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:01:17,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681993307] [2022-11-20 20:01:17,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:17,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:01:17,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:01:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:01:17,111 INFO L87 Difference]: Start difference. First operand 7262 states and 9556 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 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) [2022-11-20 20:01:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:21,038 INFO L93 Difference]: Finished difference Result 10823 states and 14510 transitions. [2022-11-20 20:01:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:01:21,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 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 [2022-11-20 20:01:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:21,061 INFO L225 Difference]: With dead ends: 10823 [2022-11-20 20:01:21,061 INFO L226 Difference]: Without dead ends: 9806 [2022-11-20 20:01:21,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:01:21,067 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 8773 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8773 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:21,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8773 Valid, 3845 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 20:01:21,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9806 states. [2022-11-20 20:01:21,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9806 to 7135. [2022-11-20 20:01:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3189098061253162) internal successors, (9388), 7134 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9388 transitions. [2022-11-20 20:01:21,553 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9388 transitions. Word has length 65 [2022-11-20 20:01:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:21,553 INFO L495 AbstractCegarLoop]: Abstraction has 7135 states and 9388 transitions. [2022-11-20 20:01:21,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 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) [2022-11-20 20:01:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9388 transitions. [2022-11-20 20:01:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 20:01:21,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:21,560 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] [2022-11-20 20:01:21,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:01:21,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:21,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:21,561 INFO L85 PathProgramCache]: Analyzing trace with hash -780640952, now seen corresponding path program 1 times [2022-11-20 20:01:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:21,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999550202] [2022-11-20 20:01:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:21,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:21,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:21,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999550202] [2022-11-20 20:01:21,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999550202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:21,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:21,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:01:21,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416144217] [2022-11-20 20:01:21,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:01:21,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:01:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:01:21,882 INFO L87 Difference]: Start difference. First operand 7135 states and 9388 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2022-11-20 20:01:26,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:26,402 INFO L93 Difference]: Finished difference Result 9809 states and 12929 transitions. [2022-11-20 20:01:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:01:26,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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 [2022-11-20 20:01:26,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:26,424 INFO L225 Difference]: With dead ends: 9809 [2022-11-20 20:01:26,424 INFO L226 Difference]: Without dead ends: 9801 [2022-11-20 20:01:26,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:01:26,428 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 5846 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5846 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 5667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:26,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5846 Valid, 4922 Invalid, 5667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 5605 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 20:01:26,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2022-11-20 20:01:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 7135. [2022-11-20 20:01:27,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3187693172239394) internal successors, (9387), 7134 states have internal predecessors, (9387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9387 transitions. [2022-11-20 20:01:27,203 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9387 transitions. Word has length 66 [2022-11-20 20:01:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:27,204 INFO L495 AbstractCegarLoop]: Abstraction has 7135 states and 9387 transitions. [2022-11-20 20:01:27,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2022-11-20 20:01:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9387 transitions. [2022-11-20 20:01:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 20:01:27,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:27,212 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] [2022-11-20 20:01:27,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:01:27,212 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:27,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:27,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1912274000, now seen corresponding path program 1 times [2022-11-20 20:01:27,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:27,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504171880] [2022-11-20 20:01:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:27,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:27,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:27,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504171880] [2022-11-20 20:01:27,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504171880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:27,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:27,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:01:27,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933030078] [2022-11-20 20:01:27,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:27,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:01:27,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:27,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:01:27,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:01:27,652 INFO L87 Difference]: Start difference. First operand 7135 states and 9387 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2022-11-20 20:01:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:32,176 INFO L93 Difference]: Finished difference Result 8303 states and 10922 transitions. [2022-11-20 20:01:32,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:01:32,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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 [2022-11-20 20:01:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:32,190 INFO L225 Difference]: With dead ends: 8303 [2022-11-20 20:01:32,190 INFO L226 Difference]: Without dead ends: 8298 [2022-11-20 20:01:32,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:01:32,193 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 7142 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 5703 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7142 SdHoareTripleChecker+Valid, 5433 SdHoareTripleChecker+Invalid, 5723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:32,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7142 Valid, 5433 Invalid, 5723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 5703 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 20:01:32,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2022-11-20 20:01:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 7135. [2022-11-20 20:01:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3186288283225625) internal successors, (9386), 7134 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9386 transitions. [2022-11-20 20:01:32,764 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9386 transitions. Word has length 66 [2022-11-20 20:01:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:32,765 INFO L495 AbstractCegarLoop]: Abstraction has 7135 states and 9386 transitions. [2022-11-20 20:01:32,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2022-11-20 20:01:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9386 transitions. [2022-11-20 20:01:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 20:01:32,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:32,774 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] [2022-11-20 20:01:32,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:01:32,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:32,775 INFO L85 PathProgramCache]: Analyzing trace with hash -143652767, now seen corresponding path program 1 times [2022-11-20 20:01:32,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:32,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621419653] [2022-11-20 20:01:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:32,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:33,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:33,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621419653] [2022-11-20 20:01:33,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621419653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:33,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:33,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:01:33,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165296305] [2022-11-20 20:01:33,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:33,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:01:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:01:33,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:01:33,447 INFO L87 Difference]: Start difference. First operand 7135 states and 9386 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) [2022-11-20 20:01:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:37,814 INFO L93 Difference]: Finished difference Result 13443 states and 18278 transitions. [2022-11-20 20:01:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:01:37,815 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 [2022-11-20 20:01:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:37,837 INFO L225 Difference]: With dead ends: 13443 [2022-11-20 20:01:37,838 INFO L226 Difference]: Without dead ends: 12513 [2022-11-20 20:01:37,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:01:37,843 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 6774 mSDsluCounter, 6099 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6774 SdHoareTripleChecker+Valid, 8290 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:37,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6774 Valid, 8290 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 20:01:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12513 states. [2022-11-20 20:01:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12513 to 7087. [2022-11-20 20:01:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7087 states, 7071 states have (on average 1.3186253712346203) internal successors, (9324), 7086 states have internal predecessors, (9324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 9324 transitions. [2022-11-20 20:01:39,036 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 9324 transitions. Word has length 66 [2022-11-20 20:01:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:39,036 INFO L495 AbstractCegarLoop]: Abstraction has 7087 states and 9324 transitions. [2022-11-20 20:01:39,036 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) [2022-11-20 20:01:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 9324 transitions. [2022-11-20 20:01:39,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 20:01:39,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:39,044 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] [2022-11-20 20:01:39,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:01:39,044 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1525924249, now seen corresponding path program 1 times [2022-11-20 20:01:39,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:39,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130388692] [2022-11-20 20:01:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:39,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:39,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:39,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130388692] [2022-11-20 20:01:39,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130388692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:39,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:39,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:01:39,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585400956] [2022-11-20 20:01:39,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:39,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:01:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:01:39,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:01:39,707 INFO L87 Difference]: Start difference. First operand 7087 states and 9324 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 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) [2022-11-20 20:01:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:43,894 INFO L93 Difference]: Finished difference Result 11298 states and 15279 transitions. [2022-11-20 20:01:43,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 20:01:43,894 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 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 [2022-11-20 20:01:43,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:43,905 INFO L225 Difference]: With dead ends: 11298 [2022-11-20 20:01:43,906 INFO L226 Difference]: Without dead ends: 11294 [2022-11-20 20:01:43,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-20 20:01:43,908 INFO L413 NwaCegarLoop]: 2315 mSDtfsCounter, 13394 mSDsluCounter, 10068 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13394 SdHoareTripleChecker+Valid, 12383 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:43,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13394 Valid, 12383 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 20:01:43,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11294 states. [2022-11-20 20:01:44,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11294 to 7083. [2022-11-20 20:01:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 7068 states have (on average 1.3186191284663271) internal successors, (9320), 7082 states have internal predecessors, (9320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 9320 transitions. [2022-11-20 20:01:44,987 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 9320 transitions. Word has length 66 [2022-11-20 20:01:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:44,987 INFO L495 AbstractCegarLoop]: Abstraction has 7083 states and 9320 transitions. [2022-11-20 20:01:44,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 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) [2022-11-20 20:01:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 9320 transitions. [2022-11-20 20:01:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 20:01:44,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:44,995 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] [2022-11-20 20:01:44,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:01:44,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2095330879, now seen corresponding path program 1 times [2022-11-20 20:01:44,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:44,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935583872] [2022-11-20 20:01:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:44,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:45,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:45,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935583872] [2022-11-20 20:01:45,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935583872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:45,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:45,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:01:45,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692511028] [2022-11-20 20:01:45,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:45,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:01:45,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:45,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:01:45,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:01:45,711 INFO L87 Difference]: Start difference. First operand 7083 states and 9320 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-20 20:01:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:50,537 INFO L93 Difference]: Finished difference Result 12730 states and 17228 transitions. [2022-11-20 20:01:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:01:50,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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 [2022-11-20 20:01:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:50,548 INFO L225 Difference]: With dead ends: 12730 [2022-11-20 20:01:50,549 INFO L226 Difference]: Without dead ends: 11747 [2022-11-20 20:01:50,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:01:50,553 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 16294 mSDsluCounter, 6105 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16294 SdHoareTripleChecker+Valid, 8296 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:50,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16294 Valid, 8296 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 20:01:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11747 states. [2022-11-20 20:01:51,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11747 to 7051. [2022-11-20 20:01:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3190733371233656) internal successors, (9281), 7050 states have internal predecessors, (9281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9281 transitions. [2022-11-20 20:01:51,683 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9281 transitions. Word has length 67 [2022-11-20 20:01:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:51,683 INFO L495 AbstractCegarLoop]: Abstraction has 7051 states and 9281 transitions. [2022-11-20 20:01:51,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-20 20:01:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9281 transitions. [2022-11-20 20:01:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 20:01:51,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:51,691 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] [2022-11-20 20:01:51,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:01:51,691 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash 920345528, now seen corresponding path program 1 times [2022-11-20 20:01:51,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:51,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931502740] [2022-11-20 20:01:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:51,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:51,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:51,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931502740] [2022-11-20 20:01:51,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931502740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:51,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:51,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:01:51,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621954142] [2022-11-20 20:01:51,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:51,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:01:51,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:51,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:01:51,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:01:51,991 INFO L87 Difference]: Start difference. First operand 7051 states and 9281 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2022-11-20 20:01:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:01:57,423 INFO L93 Difference]: Finished difference Result 10861 states and 14568 transitions. [2022-11-20 20:01:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:01:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 [2022-11-20 20:01:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:01:57,431 INFO L225 Difference]: With dead ends: 10861 [2022-11-20 20:01:57,431 INFO L226 Difference]: Without dead ends: 9700 [2022-11-20 20:01:57,433 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 [2022-11-20 20:01:57,434 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 5718 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5718 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:01:57,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5718 Valid, 3598 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 20:01:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9700 states. [2022-11-20 20:01:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9700 to 7051. [2022-11-20 20:01:58,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3189312109152929) internal successors, (9280), 7050 states have internal predecessors, (9280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:01:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9280 transitions. [2022-11-20 20:01:58,475 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9280 transitions. Word has length 67 [2022-11-20 20:01:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:01:58,476 INFO L495 AbstractCegarLoop]: Abstraction has 7051 states and 9280 transitions. [2022-11-20 20:01:58,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2022-11-20 20:01:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9280 transitions. [2022-11-20 20:01:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 20:01:58,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:01:58,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:01:58,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 20:01:58,483 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:01:58,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:01:58,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1407222430, now seen corresponding path program 1 times [2022-11-20 20:01:58,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:01:58,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293487606] [2022-11-20 20:01:58,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:01:58,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:01:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:01:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:01:58,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:01:58,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293487606] [2022-11-20 20:01:58,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293487606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:58,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:01:58,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:01:58,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605237826] [2022-11-20 20:01:58,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:58,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:01:58,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:58,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:01:58,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:01:58,774 INFO L87 Difference]: Start difference. First operand 7051 states and 9280 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 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) [2022-11-20 20:02:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:02:05,422 INFO L93 Difference]: Finished difference Result 11530 states and 15429 transitions. [2022-11-20 20:02:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:02:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 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 [2022-11-20 20:02:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:02:05,436 INFO L225 Difference]: With dead ends: 11530 [2022-11-20 20:02:05,436 INFO L226 Difference]: Without dead ends: 10633 [2022-11-20 20:02:05,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:02:05,440 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 5864 mSDsluCounter, 3742 mSDsCounter, 0 mSdLazyCounter, 5662 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5864 SdHoareTripleChecker+Valid, 4969 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 5662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:02:05,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5864 Valid, 4969 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 5662 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 20:02:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10633 states. [2022-11-20 20:02:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10633 to 7051. [2022-11-20 20:02:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3187890847072201) internal successors, (9279), 7050 states have internal predecessors, (9279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:02:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9279 transitions. [2022-11-20 20:02:06,591 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9279 transitions. Word has length 67 [2022-11-20 20:02:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:02:06,592 INFO L495 AbstractCegarLoop]: Abstraction has 7051 states and 9279 transitions. [2022-11-20 20:02:06,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 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) [2022-11-20 20:02:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9279 transitions. [2022-11-20 20:02:06,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 20:02:06,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:02:06,603 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] [2022-11-20 20:02:06,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 20:02:06,604 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:02:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:02:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash -805185725, now seen corresponding path program 1 times [2022-11-20 20:02:06,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:02:06,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867921541] [2022-11-20 20:02:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:02:06,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:02:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:02:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:02:07,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:02:07,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867921541] [2022-11-20 20:02:07,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867921541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:02:07,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:02:07,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:02:07,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050347825] [2022-11-20 20:02:07,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:02:07,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:02:07,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:02:07,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:02:07,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:02:07,110 INFO L87 Difference]: Start difference. First operand 7051 states and 9279 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-20 20:02:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:02:14,650 INFO L93 Difference]: Finished difference Result 10481 states and 13880 transitions. [2022-11-20 20:02:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 20:02:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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 [2022-11-20 20:02:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:02:14,660 INFO L225 Difference]: With dead ends: 10481 [2022-11-20 20:02:14,661 INFO L226 Difference]: Without dead ends: 9594 [2022-11-20 20:02:14,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:02:14,663 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 8469 mSDsluCounter, 5172 mSDsCounter, 0 mSdLazyCounter, 7173 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8469 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 7252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 7173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:02:14,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8469 Valid, 6342 Invalid, 7252 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 7173 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 20:02:14,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9594 states. [2022-11-20 20:02:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9594 to 7059. [2022-11-20 20:02:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7059 states, 7044 states have (on average 1.3189948892674617) internal successors, (9291), 7058 states have internal predecessors, (9291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:02:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 9291 transitions. [2022-11-20 20:02:15,841 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 9291 transitions. Word has length 67 [2022-11-20 20:02:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:02:15,841 INFO L495 AbstractCegarLoop]: Abstraction has 7059 states and 9291 transitions. [2022-11-20 20:02:15,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-20 20:02:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 9291 transitions. [2022-11-20 20:02:15,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 20:02:15,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:02:15,850 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] [2022-11-20 20:02:15,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 20:02:15,850 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:02:15,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:02:15,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1779932252, now seen corresponding path program 1 times [2022-11-20 20:02:15,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:02:15,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923073304] [2022-11-20 20:02:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:02:15,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:02:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:02:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:02:16,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:02:16,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923073304] [2022-11-20 20:02:16,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923073304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:02:16,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:02:16,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:02:16,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424761741] [2022-11-20 20:02:16,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:02:16,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:02:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:02:16,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:02:16,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:02:16,283 INFO L87 Difference]: Start difference. First operand 7059 states and 9291 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-20 20:02:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:02:25,510 INFO L93 Difference]: Finished difference Result 12321 states and 16331 transitions. [2022-11-20 20:02:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 20:02:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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 [2022-11-20 20:02:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:02:25,526 INFO L225 Difference]: With dead ends: 12321 [2022-11-20 20:02:25,526 INFO L226 Difference]: Without dead ends: 11420 [2022-11-20 20:02:25,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:02:25,530 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 8081 mSDsluCounter, 6134 mSDsCounter, 0 mSdLazyCounter, 8808 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8081 SdHoareTripleChecker+Valid, 7374 SdHoareTripleChecker+Invalid, 8952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 8808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:02:25,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8081 Valid, 7374 Invalid, 8952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [144 Valid, 8808 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 20:02:25,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11420 states. [2022-11-20 20:02:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11420 to 7059. [2022-11-20 20:02:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7059 states, 7044 states have (on average 1.3188529244747302) internal successors, (9290), 7058 states have internal predecessors, (9290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:02:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 9290 transitions. [2022-11-20 20:02:26,820 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 9290 transitions. Word has length 67 [2022-11-20 20:02:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:02:26,820 INFO L495 AbstractCegarLoop]: Abstraction has 7059 states and 9290 transitions. [2022-11-20 20:02:26,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-20 20:02:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 9290 transitions. [2022-11-20 20:02:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 20:02:26,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:02:26,824 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] [2022-11-20 20:02:26,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 20:02:26,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:02:26,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:02:26,825 INFO L85 PathProgramCache]: Analyzing trace with hash 164568382, now seen corresponding path program 1 times [2022-11-20 20:02:26,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:02:26,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26057704] [2022-11-20 20:02:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:02:26,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:02:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:02:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:02:27,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:02:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26057704] [2022-11-20 20:02:27,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26057704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:02:27,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:02:27,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:02:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537136822] [2022-11-20 20:02:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:02:27,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:02:27,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:02:27,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:02:27,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:02:27,488 INFO L87 Difference]: Start difference. First operand 7059 states and 9290 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 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) [2022-11-20 20:02:47,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:02:47,344 INFO L93 Difference]: Finished difference Result 24618 states and 33857 transitions. [2022-11-20 20:02:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 20:02:47,345 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 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 [2022-11-20 20:02:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:02:47,375 INFO L225 Difference]: With dead ends: 24618 [2022-11-20 20:02:47,375 INFO L226 Difference]: Without dead ends: 23572 [2022-11-20 20:02:47,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=666, Invalid=2640, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 20:02:47,383 INFO L413 NwaCegarLoop]: 3471 mSDtfsCounter, 14662 mSDsluCounter, 21642 mSDsCounter, 0 mSdLazyCounter, 6858 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14662 SdHoareTripleChecker+Valid, 25113 SdHoareTripleChecker+Invalid, 6960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 6858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:02:47,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14662 Valid, 25113 Invalid, 6960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 6858 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 20:02:47,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23572 states. [2022-11-20 20:02:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23572 to 6895. [2022-11-20 20:02:49,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 6881 states have (on average 1.3173957273652086) internal successors, (9065), 6894 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:02:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 9065 transitions. [2022-11-20 20:02:49,172 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 9065 transitions. Word has length 67 [2022-11-20 20:02:49,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:02:49,172 INFO L495 AbstractCegarLoop]: Abstraction has 6895 states and 9065 transitions. [2022-11-20 20:02:49,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 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) [2022-11-20 20:02:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 9065 transitions. [2022-11-20 20:02:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 20:02:49,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:02:49,177 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] [2022-11-20 20:02:49,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 20:02:49,177 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:02:49,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:02:49,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2055073312, now seen corresponding path program 1 times [2022-11-20 20:02:49,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:02:49,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470807515] [2022-11-20 20:02:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:02:49,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:02:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:02:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:02:49,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:02:49,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470807515] [2022-11-20 20:02:49,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470807515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:02:49,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:02:49,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:02:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384433347] [2022-11-20 20:02:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:02:49,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:02:49,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:02:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:02:49,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:02:49,251 INFO L87 Difference]: Start difference. First operand 6895 states and 9065 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2022-11-20 20:02:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:02:51,387 INFO L93 Difference]: Finished difference Result 9769 states and 12969 transitions. [2022-11-20 20:02:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:02:51,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 [2022-11-20 20:02:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:02:51,393 INFO L225 Difference]: With dead ends: 9769 [2022-11-20 20:02:51,394 INFO L226 Difference]: Without dead ends: 5890 [2022-11-20 20:02:51,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:02:51,398 INFO L413 NwaCegarLoop]: 1645 mSDtfsCounter, 1609 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:02:51,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 2127 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:02:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2022-11-20 20:02:53,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 5872. [2022-11-20 20:02:53,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5862 states have (on average 1.3220743773456158) internal successors, (7750), 5871 states have internal predecessors, (7750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:02:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 7750 transitions. [2022-11-20 20:02:53,053 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 7750 transitions. Word has length 67 [2022-11-20 20:02:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:02:53,053 INFO L495 AbstractCegarLoop]: Abstraction has 5872 states and 7750 transitions. [2022-11-20 20:02:53,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2022-11-20 20:02:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 7750 transitions. [2022-11-20 20:02:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 20:02:53,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:02:53,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:02:53,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 20:02:53,059 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:02:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:02:53,060 INFO L85 PathProgramCache]: Analyzing trace with hash -985199678, now seen corresponding path program 1 times [2022-11-20 20:02:53,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:02:53,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5351121] [2022-11-20 20:02:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:02:53,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:02:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:02:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:02:53,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:02:53,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5351121] [2022-11-20 20:02:53,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5351121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:02:53,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:02:53,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:02:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101208915] [2022-11-20 20:02:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:02:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:02:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:02:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:02:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:02:53,140 INFO L87 Difference]: Start difference. First operand 5872 states and 7750 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:02:55,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:02:55,501 INFO L93 Difference]: Finished difference Result 9132 states and 12162 transitions. [2022-11-20 20:02:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:02:55,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 [2022-11-20 20:02:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:02:55,508 INFO L225 Difference]: With dead ends: 9132 [2022-11-20 20:02:55,508 INFO L226 Difference]: Without dead ends: 5534 [2022-11-20 20:02:55,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:02:55,513 INFO L413 NwaCegarLoop]: 1270 mSDtfsCounter, 1271 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:02:55,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 1624 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:02:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2022-11-20 20:02:57,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5526. [2022-11-20 20:02:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5519 states have (on average 1.3303134625838013) internal successors, (7342), 5525 states have internal predecessors, (7342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:02:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 7342 transitions. [2022-11-20 20:02:57,506 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 7342 transitions. Word has length 68 [2022-11-20 20:02:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:02:57,507 INFO L495 AbstractCegarLoop]: Abstraction has 5526 states and 7342 transitions. [2022-11-20 20:02:57,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:02:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 7342 transitions. [2022-11-20 20:02:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 20:02:57,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:02:57,512 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] [2022-11-20 20:02:57,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 20:02:57,512 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:02:57,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:02:57,513 INFO L85 PathProgramCache]: Analyzing trace with hash -746381525, now seen corresponding path program 1 times [2022-11-20 20:02:57,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:02:57,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25402977] [2022-11-20 20:02:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:02:57,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:02:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:02:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:02:57,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:02:57,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25402977] [2022-11-20 20:02:57,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25402977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:02:57,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:02:57,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:02:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410998570] [2022-11-20 20:02:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:02:57,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:02:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:02:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:02:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:02:57,610 INFO L87 Difference]: Start difference. First operand 5526 states and 7342 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:03:00,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:03:00,401 INFO L93 Difference]: Finished difference Result 8040 states and 10963 transitions. [2022-11-20 20:03:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:03:00,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 [2022-11-20 20:03:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:03:00,406 INFO L225 Difference]: With dead ends: 8040 [2022-11-20 20:03:00,406 INFO L226 Difference]: Without dead ends: 5649 [2022-11-20 20:03:00,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:03:00,410 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 755 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:03:00,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1937 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:03:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2022-11-20 20:03:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 4551. [2022-11-20 20:03:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 4544 states have (on average 1.3369278169014085) internal successors, (6075), 4550 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:03:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 6075 transitions. [2022-11-20 20:03:02,205 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 6075 transitions. Word has length 68 [2022-11-20 20:03:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:03:02,206 INFO L495 AbstractCegarLoop]: Abstraction has 4551 states and 6075 transitions. [2022-11-20 20:03:02,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:03:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 6075 transitions. [2022-11-20 20:03:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 20:03:02,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:03:02,208 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] [2022-11-20 20:03:02,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 20:03:02,208 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:03:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:03:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1614233913, now seen corresponding path program 1 times [2022-11-20 20:03:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:03:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600794611] [2022-11-20 20:03:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:03:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:03:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:03:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:03:02,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:03:02,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600794611] [2022-11-20 20:03:02,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600794611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:03:02,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:03:02,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:03:02,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628068274] [2022-11-20 20:03:02,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:03:02,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:03:02,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:03:02,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:03:02,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:03:02,281 INFO L87 Difference]: Start difference. First operand 4551 states and 6075 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:03:05,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:03:05,945 INFO L93 Difference]: Finished difference Result 9341 states and 12716 transitions. [2022-11-20 20:03:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:03:05,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 [2022-11-20 20:03:05,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:03:05,956 INFO L225 Difference]: With dead ends: 9341 [2022-11-20 20:03:05,956 INFO L226 Difference]: Without dead ends: 6946 [2022-11-20 20:03:05,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:03:05,960 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 776 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:03:05,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 2463 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:03:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2022-11-20 20:03:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6938. [2022-11-20 20:03:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6938 states, 6931 states have (on average 1.3410763237628047) internal successors, (9295), 6937 states have internal predecessors, (9295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:03:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 9295 transitions. [2022-11-20 20:03:09,073 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 9295 transitions. Word has length 68 [2022-11-20 20:03:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:03:09,073 INFO L495 AbstractCegarLoop]: Abstraction has 6938 states and 9295 transitions. [2022-11-20 20:03:09,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:03:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 9295 transitions. [2022-11-20 20:03:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 20:03:09,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:03:09,076 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] [2022-11-20 20:03:09,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 20:03:09,077 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:03:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:03:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash -921778135, now seen corresponding path program 1 times [2022-11-20 20:03:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:03:09,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442599990] [2022-11-20 20:03:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:03:09,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:03:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:03:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:03:09,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:03:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442599990] [2022-11-20 20:03:09,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442599990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:03:09,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:03:09,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:03:09,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216158473] [2022-11-20 20:03:09,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:03:09,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:03:09,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:03:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:03:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:03:09,156 INFO L87 Difference]: Start difference. First operand 6938 states and 9295 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:03:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:03:14,143 INFO L93 Difference]: Finished difference Result 12652 states and 17436 transitions. [2022-11-20 20:03:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:03:14,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 [2022-11-20 20:03:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:03:14,153 INFO L225 Difference]: With dead ends: 12652 [2022-11-20 20:03:14,153 INFO L226 Difference]: Without dead ends: 8858 [2022-11-20 20:03:14,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:03:14,158 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 754 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:03:14,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1892 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:03:14,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8858 states. [2022-11-20 20:03:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8858 to 7869. [2022-11-20 20:03:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 7862 states have (on average 1.358305774612058) internal successors, (10679), 7868 states have internal predecessors, (10679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:03:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 10679 transitions. [2022-11-20 20:03:18,326 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 10679 transitions. Word has length 68 [2022-11-20 20:03:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:03:18,327 INFO L495 AbstractCegarLoop]: Abstraction has 7869 states and 10679 transitions. [2022-11-20 20:03:18,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:03:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 10679 transitions. [2022-11-20 20:03:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 20:03:18,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:03:18,330 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] [2022-11-20 20:03:18,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 20:03:18,330 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:03:18,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:03:18,330 INFO L85 PathProgramCache]: Analyzing trace with hash 563894881, now seen corresponding path program 1 times [2022-11-20 20:03:18,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:03:18,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316785872] [2022-11-20 20:03:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:03:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:03:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:03:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:03:18,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:03:18,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316785872] [2022-11-20 20:03:18,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316785872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:03:18,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:03:18,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:03:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513806220] [2022-11-20 20:03:18,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:03:18,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:03:18,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:03:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:03:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:03:18,413 INFO L87 Difference]: Start difference. First operand 7869 states and 10679 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:03:26,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:03:26,065 INFO L93 Difference]: Finished difference Result 18347 states and 25249 transitions. [2022-11-20 20:03:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:03:26,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 [2022-11-20 20:03:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:03:26,081 INFO L225 Difference]: With dead ends: 18347 [2022-11-20 20:03:26,081 INFO L226 Difference]: Without dead ends: 12437 [2022-11-20 20:03:26,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:03:26,086 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 662 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:03:26,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2497 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:03:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12437 states. [2022-11-20 20:03:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12437 to 12429. [2022-11-20 20:03:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12429 states, 12422 states have (on average 1.3509901787151828) internal successors, (16782), 12428 states have internal predecessors, (16782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:03:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12429 states to 12429 states and 16782 transitions. [2022-11-20 20:03:33,921 INFO L78 Accepts]: Start accepts. Automaton has 12429 states and 16782 transitions. Word has length 68 [2022-11-20 20:03:33,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:03:33,921 INFO L495 AbstractCegarLoop]: Abstraction has 12429 states and 16782 transitions. [2022-11-20 20:03:33,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-20 20:03:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12429 states and 16782 transitions. [2022-11-20 20:03:33,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 20:03:33,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:03:33,926 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] [2022-11-20 20:03:33,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 20:03:33,926 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:03:33,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:03:33,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2399851, now seen corresponding path program 1 times [2022-11-20 20:03:33,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:03:33,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499248430] [2022-11-20 20:03:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:03:33,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:03:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:03:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:03:34,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:03:34,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499248430] [2022-11-20 20:03:34,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499248430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:03:34,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:03:34,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:03:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912913296] [2022-11-20 20:03:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:03:34,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:03:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:03:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:03:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:03:34,329 INFO L87 Difference]: Start difference. First operand 12429 states and 16782 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) [2022-11-20 20:03:48,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:03:48,692 INFO L93 Difference]: Finished difference Result 18559 states and 24960 transitions. [2022-11-20 20:03:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:03:48,692 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 [2022-11-20 20:03:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:03:48,715 INFO L225 Difference]: With dead ends: 18559 [2022-11-20 20:03:48,715 INFO L226 Difference]: Without dead ends: 17996 [2022-11-20 20:03:48,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:03:48,720 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 4188 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4188 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:03:48,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4188 Valid, 3476 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 20:03:48,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17996 states. [2022-11-20 20:03:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17996 to 12428. [2022-11-20 20:03:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12428 states, 12421 states have (on average 1.3509379277030835) internal successors, (16780), 12427 states have internal predecessors, (16780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:03:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12428 states to 12428 states and 16780 transitions. [2022-11-20 20:03:56,339 INFO L78 Accepts]: Start accepts. Automaton has 12428 states and 16780 transitions. Word has length 69 [2022-11-20 20:03:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:03:56,339 INFO L495 AbstractCegarLoop]: Abstraction has 12428 states and 16780 transitions. [2022-11-20 20:03:56,340 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) [2022-11-20 20:03:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 12428 states and 16780 transitions. [2022-11-20 20:03:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 20:03:56,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:03:56,343 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] [2022-11-20 20:03:56,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 20:03:56,343 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:03:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:03:56,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1878130755, now seen corresponding path program 1 times [2022-11-20 20:03:56,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:03:56,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715213831] [2022-11-20 20:03:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:03:56,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:03:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:03:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:03:57,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:03:57,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715213831] [2022-11-20 20:03:57,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715213831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:03:57,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:03:57,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:03:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050393838] [2022-11-20 20:03:57,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:03:57,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:03:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:03:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:03:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:03:57,012 INFO L87 Difference]: Start difference. First operand 12428 states and 16780 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2022-11-20 20:04:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:42,459 INFO L93 Difference]: Finished difference Result 49785 states and 67790 transitions. [2022-11-20 20:04:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 20:04:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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 [2022-11-20 20:04:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:42,577 INFO L225 Difference]: With dead ends: 49785 [2022-11-20 20:04:42,578 INFO L226 Difference]: Without dead ends: 49203 [2022-11-20 20:04:42,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 20:04:42,591 INFO L413 NwaCegarLoop]: 1808 mSDtfsCounter, 8962 mSDsluCounter, 12255 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8962 SdHoareTripleChecker+Valid, 14063 SdHoareTripleChecker+Invalid, 4084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:42,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8962 Valid, 14063 Invalid, 4084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 4010 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 20:04:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49203 states. [2022-11-20 20:04:51,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49203 to 12408. [2022-11-20 20:04:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12408 states, 12402 states have (on average 1.3509111433639736) internal successors, (16754), 12407 states have internal predecessors, (16754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12408 states to 12408 states and 16754 transitions. [2022-11-20 20:04:51,218 INFO L78 Accepts]: Start accepts. Automaton has 12408 states and 16754 transitions. Word has length 69 [2022-11-20 20:04:51,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:51,218 INFO L495 AbstractCegarLoop]: Abstraction has 12408 states and 16754 transitions. [2022-11-20 20:04:51,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2022-11-20 20:04:51,218 INFO L276 IsEmpty]: Start isEmpty. Operand 12408 states and 16754 transitions. [2022-11-20 20:04:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 20:04:51,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:51,222 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] [2022-11-20 20:04:51,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 20:04:51,223 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:04:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash 177521083, now seen corresponding path program 1 times [2022-11-20 20:04:51,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:51,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480663697] [2022-11-20 20:04:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:51,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:51,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:51,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480663697] [2022-11-20 20:04:51,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480663697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:51,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:51,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:04:51,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333524156] [2022-11-20 20:04:51,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:51,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:04:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:04:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:04:51,533 INFO L87 Difference]: Start difference. First operand 12408 states and 16754 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) [2022-11-20 20:05:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:15,992 INFO L93 Difference]: Finished difference Result 26211 states and 35336 transitions. [2022-11-20 20:05:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:05:15,993 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 [2022-11-20 20:05:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:16,026 INFO L225 Difference]: With dead ends: 26211 [2022-11-20 20:05:16,026 INFO L226 Difference]: Without dead ends: 25011 [2022-11-20 20:05:16,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:05:16,032 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 5039 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5039 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:16,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5039 Valid, 3224 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3719 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 20:05:16,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25011 states. [2022-11-20 20:05:24,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25011 to 12371. [2022-11-20 20:05:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12371 states, 12365 states have (on average 1.3509098261221189) internal successors, (16704), 12370 states have internal predecessors, (16704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12371 states to 12371 states and 16704 transitions. [2022-11-20 20:05:24,425 INFO L78 Accepts]: Start accepts. Automaton has 12371 states and 16704 transitions. Word has length 69 [2022-11-20 20:05:24,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:24,425 INFO L495 AbstractCegarLoop]: Abstraction has 12371 states and 16704 transitions. [2022-11-20 20:05:24,425 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) [2022-11-20 20:05:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 12371 states and 16704 transitions. [2022-11-20 20:05:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 20:05:24,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:24,429 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] [2022-11-20 20:05:24,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 20:05:24,429 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:05:24,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:24,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1406960713, now seen corresponding path program 1 times [2022-11-20 20:05:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:24,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48855674] [2022-11-20 20:05:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:05:24,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:24,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48855674] [2022-11-20 20:05:24,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48855674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:24,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:24,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:05:24,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966124133] [2022-11-20 20:05:24,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:24,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:05:24,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:24,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:05:24,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:24,495 INFO L87 Difference]: Start difference. First operand 12371 states and 16704 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-20 20:05:35,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:35,383 INFO L93 Difference]: Finished difference Result 24409 states and 33310 transitions. [2022-11-20 20:05:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:05:35,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2022-11-20 20:05:35,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:35,399 INFO L225 Difference]: With dead ends: 24409 [2022-11-20 20:05:35,399 INFO L226 Difference]: Without dead ends: 13455 [2022-11-20 20:05:35,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:35,407 INFO L413 NwaCegarLoop]: 1249 mSDtfsCounter, 1150 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:35,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1701 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:05:35,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13455 states. [2022-11-20 20:05:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13455 to 10831. [2022-11-20 20:05:43,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10831 states, 10825 states have (on average 1.360092378752887) internal successors, (14723), 10830 states have internal predecessors, (14723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10831 states to 10831 states and 14723 transitions. [2022-11-20 20:05:43,168 INFO L78 Accepts]: Start accepts. Automaton has 10831 states and 14723 transitions. Word has length 69 [2022-11-20 20:05:43,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:43,168 INFO L495 AbstractCegarLoop]: Abstraction has 10831 states and 14723 transitions. [2022-11-20 20:05:43,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-20 20:05:43,168 INFO L276 IsEmpty]: Start isEmpty. Operand 10831 states and 14723 transitions. [2022-11-20 20:05:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 20:05:43,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:43,171 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] [2022-11-20 20:05:43,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 20:05:43,171 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:05:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1898328567, now seen corresponding path program 1 times [2022-11-20 20:05:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:43,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684567662] [2022-11-20 20:05:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:43,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:05:43,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:43,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684567662] [2022-11-20 20:05:43,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684567662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:43,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:43,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:05:43,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949906328] [2022-11-20 20:05:43,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:43,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:05:43,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:43,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:05:43,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:43,239 INFO L87 Difference]: Start difference. First operand 10831 states and 14723 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-20 20:05:52,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:52,582 INFO L93 Difference]: Finished difference Result 21054 states and 28825 transitions. [2022-11-20 20:05:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:05:52,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2022-11-20 20:05:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:52,594 INFO L225 Difference]: With dead ends: 21054 [2022-11-20 20:05:52,594 INFO L226 Difference]: Without dead ends: 10993 [2022-11-20 20:05:52,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:52,601 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 921 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:52,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1576 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:05:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10993 states. [2022-11-20 20:06:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10993 to 9660. [2022-11-20 20:06:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.3645121193287757) internal successors, (13173), 9659 states have internal predecessors, (13173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13173 transitions. [2022-11-20 20:06:00,581 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13173 transitions. Word has length 69 [2022-11-20 20:06:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:00,581 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13173 transitions. [2022-11-20 20:06:00,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-20 20:06:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13173 transitions. [2022-11-20 20:06:00,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 20:06:00,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:00,583 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] [2022-11-20 20:06:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 20:06:00,583 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:06:00,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash 936354534, now seen corresponding path program 1 times [2022-11-20 20:06:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:00,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512911910] [2022-11-20 20:06:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:06:00,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:00,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512911910] [2022-11-20 20:06:00,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512911910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:00,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:00,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:06:00,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170757657] [2022-11-20 20:06:00,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:00,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:06:00,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:00,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:06:00,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:06:00,823 INFO L87 Difference]: Start difference. First operand 9660 states and 13173 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:18,616 INFO L93 Difference]: Finished difference Result 17270 states and 23216 transitions. [2022-11-20 20:06:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:06:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-20 20:06:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:18,640 INFO L225 Difference]: With dead ends: 17270 [2022-11-20 20:06:18,640 INFO L226 Difference]: Without dead ends: 16666 [2022-11-20 20:06:18,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:06:18,644 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 4170 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4170 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:18,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4170 Valid, 2770 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 20:06:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16666 states. [2022-11-20 20:06:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16666 to 9660. [2022-11-20 20:06:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.3644085353221462) internal successors, (13172), 9659 states have internal predecessors, (13172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13172 transitions. [2022-11-20 20:06:27,156 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13172 transitions. Word has length 70 [2022-11-20 20:06:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:27,156 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13172 transitions. [2022-11-20 20:06:27,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13172 transitions. [2022-11-20 20:06:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 20:06:27,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:27,158 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] [2022-11-20 20:06:27,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 20:06:27,159 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:06:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash 521195886, now seen corresponding path program 1 times [2022-11-20 20:06:27,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:27,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196861059] [2022-11-20 20:06:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:27,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:06:27,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:27,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196861059] [2022-11-20 20:06:27,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196861059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:27,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:27,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:06:27,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995727578] [2022-11-20 20:06:27,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:27,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:06:27,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:27,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:06:27,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:06:27,476 INFO L87 Difference]: Start difference. First operand 9660 states and 13172 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:42,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:42,640 INFO L93 Difference]: Finished difference Result 15444 states and 20868 transitions. [2022-11-20 20:06:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:06:42,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-20 20:06:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:42,660 INFO L225 Difference]: With dead ends: 15444 [2022-11-20 20:06:42,660 INFO L226 Difference]: Without dead ends: 14877 [2022-11-20 20:06:42,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:06:42,666 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 3460 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3460 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:42,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3460 Valid, 2788 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2814 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 20:06:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14877 states. [2022-11-20 20:06:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14877 to 9660. [2022-11-20 20:06:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.364304951315517) internal successors, (13171), 9659 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13171 transitions. [2022-11-20 20:06:51,193 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13171 transitions. Word has length 70 [2022-11-20 20:06:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:51,194 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13171 transitions. [2022-11-20 20:06:51,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13171 transitions. [2022-11-20 20:06:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 20:06:51,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:51,195 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] [2022-11-20 20:06:51,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 20:06:51,196 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:06:51,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash 358544031, now seen corresponding path program 1 times [2022-11-20 20:06:51,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:51,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087306476] [2022-11-20 20:06:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:51,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:06:51,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:51,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087306476] [2022-11-20 20:06:51,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087306476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:51,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:51,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:06:51,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35412161] [2022-11-20 20:06:51,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:51,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:06:51,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:51,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:06:51,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:06:51,436 INFO L87 Difference]: Start difference. First operand 9660 states and 13171 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:07:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:07:04,008 INFO L93 Difference]: Finished difference Result 12473 states and 16733 transitions. [2022-11-20 20:07:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:07:04,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-20 20:07:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:07:04,021 INFO L225 Difference]: With dead ends: 12473 [2022-11-20 20:07:04,022 INFO L226 Difference]: Without dead ends: 11896 [2022-11-20 20:07:04,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:07:04,025 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 3861 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3861 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:07:04,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3861 Valid, 2638 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 20:07:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11896 states. [2022-11-20 20:07:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11896 to 9660. [2022-11-20 20:07:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.3642013673088875) internal successors, (13170), 9659 states have internal predecessors, (13170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:07:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13170 transitions. [2022-11-20 20:07:12,039 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13170 transitions. Word has length 70 [2022-11-20 20:07:12,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:07:12,039 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13170 transitions. [2022-11-20 20:07:12,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:07:12,039 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13170 transitions. [2022-11-20 20:07:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 20:07:12,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:07:12,041 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] [2022-11-20 20:07:12,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 20:07:12,041 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:07:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:07:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1246023294, now seen corresponding path program 1 times [2022-11-20 20:07:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:07:12,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892966835] [2022-11-20 20:07:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:12,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:07:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:07:12,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:07:12,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892966835] [2022-11-20 20:07:12,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892966835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:07:12,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:07:12,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:07:12,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937207126] [2022-11-20 20:07:12,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:07:12,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:07:12,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:07:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:07:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:07:12,340 INFO L87 Difference]: Start difference. First operand 9660 states and 13170 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:07:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:07:27,182 INFO L93 Difference]: Finished difference Result 15444 states and 20866 transitions. [2022-11-20 20:07:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:07:27,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-20 20:07:27,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:07:27,200 INFO L225 Difference]: With dead ends: 15444 [2022-11-20 20:07:27,200 INFO L226 Difference]: Without dead ends: 14877 [2022-11-20 20:07:27,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:07:27,203 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 3440 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3440 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:07:27,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3440 Valid, 2852 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 20:07:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14877 states. [2022-11-20 20:07:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14877 to 9660. [2022-11-20 20:07:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.364097783302258) internal successors, (13169), 9659 states have internal predecessors, (13169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:07:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13169 transitions. [2022-11-20 20:07:35,052 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13169 transitions. Word has length 70 [2022-11-20 20:07:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:07:35,052 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13169 transitions. [2022-11-20 20:07:35,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:07:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13169 transitions. [2022-11-20 20:07:35,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 20:07:35,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:07:35,054 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] [2022-11-20 20:07:35,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 20:07:35,054 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:07:35,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:07:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1339094683, now seen corresponding path program 1 times [2022-11-20 20:07:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:07:35,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071421124] [2022-11-20 20:07:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:07:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:07:35,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:07:35,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071421124] [2022-11-20 20:07:35,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071421124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:07:35,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:07:35,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:07:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960040360] [2022-11-20 20:07:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:07:35,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:07:35,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:07:35,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:07:35,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:07:35,313 INFO L87 Difference]: Start difference. First operand 9660 states and 13169 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:07:47,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:07:47,867 INFO L93 Difference]: Finished difference Result 12761 states and 17102 transitions. [2022-11-20 20:07:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:07:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-20 20:07:47,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:07:47,878 INFO L225 Difference]: With dead ends: 12761 [2022-11-20 20:07:47,878 INFO L226 Difference]: Without dead ends: 12184 [2022-11-20 20:07:47,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:07:47,881 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 3836 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3836 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:07:47,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3836 Valid, 2643 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 20:07:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2022-11-20 20:07:55,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 9660. [2022-11-20 20:07:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.3639941992956288) internal successors, (13168), 9659 states have internal predecessors, (13168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:07:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13168 transitions. [2022-11-20 20:07:55,387 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13168 transitions. Word has length 70 [2022-11-20 20:07:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:07:55,387 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13168 transitions. [2022-11-20 20:07:55,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:07:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13168 transitions. [2022-11-20 20:07:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 20:07:55,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:07:55,390 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] [2022-11-20 20:07:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 20:07:55,390 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:07:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:07:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1762815561, now seen corresponding path program 1 times [2022-11-20 20:07:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:07:55,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960934159] [2022-11-20 20:07:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:07:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:07:56,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:07:56,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960934159] [2022-11-20 20:07:56,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960934159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:07:56,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:07:56,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:07:56,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054137949] [2022-11-20 20:07:56,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:07:56,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:07:56,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:07:56,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:07:56,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:07:56,069 INFO L87 Difference]: Start difference. First operand 9660 states and 13168 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 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) [2022-11-20 20:08:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:08:22,393 INFO L93 Difference]: Finished difference Result 27111 states and 36853 transitions. [2022-11-20 20:08:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 20:08:22,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 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 [2022-11-20 20:08:22,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:08:22,429 INFO L225 Difference]: With dead ends: 27111 [2022-11-20 20:08:22,429 INFO L226 Difference]: Without dead ends: 26538 [2022-11-20 20:08:22,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2022-11-20 20:08:22,435 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 7814 mSDsluCounter, 6254 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7814 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:08:22,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7814 Valid, 7615 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 20:08:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26538 states. [2022-11-20 20:08:30,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26538 to 9649. [2022-11-20 20:08:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9649 states, 9644 states have (on average 1.36395686437163) internal successors, (13154), 9648 states have internal predecessors, (13154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:08:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9649 states to 9649 states and 13154 transitions. [2022-11-20 20:08:30,333 INFO L78 Accepts]: Start accepts. Automaton has 9649 states and 13154 transitions. Word has length 72 [2022-11-20 20:08:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:08:30,333 INFO L495 AbstractCegarLoop]: Abstraction has 9649 states and 13154 transitions. [2022-11-20 20:08:30,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 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) [2022-11-20 20:08:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 9649 states and 13154 transitions. [2022-11-20 20:08:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 20:08:30,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:08:30,335 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] [2022-11-20 20:08:30,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 20:08:30,335 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:08:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:08:30,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1734379578, now seen corresponding path program 1 times [2022-11-20 20:08:30,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:08:30,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146090693] [2022-11-20 20:08:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:08:30,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:08:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:08:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:08:30,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:08:30,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146090693] [2022-11-20 20:08:30,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146090693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:08:30,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:08:30,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:08:30,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302583731] [2022-11-20 20:08:30,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:08:30,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:08:30,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:08:30,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:08:30,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:08:30,929 INFO L87 Difference]: Start difference. First operand 9649 states and 13154 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) [2022-11-20 20:08:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:08:46,786 INFO L93 Difference]: Finished difference Result 16680 states and 22638 transitions. [2022-11-20 20:08:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:08:46,794 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 [2022-11-20 20:08:46,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:08:46,815 INFO L225 Difference]: With dead ends: 16680 [2022-11-20 20:08:46,816 INFO L226 Difference]: Without dead ends: 16118 [2022-11-20 20:08:46,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-20 20:08:46,819 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 6257 mSDsluCounter, 3878 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6257 SdHoareTripleChecker+Valid, 5001 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:08:46,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6257 Valid, 5001 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:08:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16118 states. [2022-11-20 20:08:54,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16118 to 9649. [2022-11-20 20:08:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9649 states, 9644 states have (on average 1.3638531729572791) internal successors, (13153), 9648 states have internal predecessors, (13153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:08:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9649 states to 9649 states and 13153 transitions. [2022-11-20 20:08:54,733 INFO L78 Accepts]: Start accepts. Automaton has 9649 states and 13153 transitions. Word has length 72 [2022-11-20 20:08:54,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:08:54,734 INFO L495 AbstractCegarLoop]: Abstraction has 9649 states and 13153 transitions. [2022-11-20 20:08:54,734 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) [2022-11-20 20:08:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 9649 states and 13153 transitions. [2022-11-20 20:08:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 20:08:54,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:08:54,737 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] [2022-11-20 20:08:54,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 20:08:54,737 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:08:54,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:08:54,738 INFO L85 PathProgramCache]: Analyzing trace with hash 830639487, now seen corresponding path program 1 times [2022-11-20 20:08:54,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:08:54,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336879361] [2022-11-20 20:08:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:08:54,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:08:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:08:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:08:55,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:08:55,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336879361] [2022-11-20 20:08:55,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336879361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:08:55,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:08:55,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:08:55,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014084861] [2022-11-20 20:08:55,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:08:55,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:08:55,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:08:55,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:08:55,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:08:55,291 INFO L87 Difference]: Start difference. First operand 9649 states and 13153 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:09:11,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:11,354 INFO L93 Difference]: Finished difference Result 16679 states and 22636 transitions. [2022-11-20 20:09:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:09:11,354 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-20 20:09:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:11,372 INFO L225 Difference]: With dead ends: 16679 [2022-11-20 20:09:11,372 INFO L226 Difference]: Without dead ends: 16113 [2022-11-20 20:09:11,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-20 20:09:11,376 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 6115 mSDsluCounter, 4741 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6115 SdHoareTripleChecker+Valid, 5849 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:11,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6115 Valid, 5849 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:09:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16113 states. [2022-11-20 20:09:19,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16113 to 9645. [2022-11-20 20:09:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9645 states, 9641 states have (on average 1.36375894616741) internal successors, (13148), 9644 states have internal predecessors, (13148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:09:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9645 states to 9645 states and 13148 transitions. [2022-11-20 20:09:19,308 INFO L78 Accepts]: Start accepts. Automaton has 9645 states and 13148 transitions. Word has length 73 [2022-11-20 20:09:19,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:19,308 INFO L495 AbstractCegarLoop]: Abstraction has 9645 states and 13148 transitions. [2022-11-20 20:09:19,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:09:19,309 INFO L276 IsEmpty]: Start isEmpty. Operand 9645 states and 13148 transitions. [2022-11-20 20:09:19,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 20:09:19,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:19,311 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] [2022-11-20 20:09:19,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 20:09:19,311 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:09:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash -581497913, now seen corresponding path program 1 times [2022-11-20 20:09:19,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:19,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007503854] [2022-11-20 20:09:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:19,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:09:19,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:19,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007503854] [2022-11-20 20:09:19,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007503854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:19,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:19,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:09:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820145853] [2022-11-20 20:09:19,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:19,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:09:19,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:09:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:09:19,922 INFO L87 Difference]: Start difference. First operand 9645 states and 13148 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:09:58,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:58,569 INFO L93 Difference]: Finished difference Result 35152 states and 47678 transitions. [2022-11-20 20:09:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 20:09:58,569 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-20 20:09:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:58,616 INFO L225 Difference]: With dead ends: 35152 [2022-11-20 20:09:58,617 INFO L226 Difference]: Without dead ends: 34569 [2022-11-20 20:09:58,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 20:09:58,624 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 6625 mSDsluCounter, 9299 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6625 SdHoareTripleChecker+Valid, 10932 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:58,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6625 Valid, 10932 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 20:09:58,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34569 states. [2022-11-20 20:10:07,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34569 to 9624. [2022-11-20 20:10:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9624 states, 9621 states have (on average 1.3638914873713752) internal successors, (13122), 9623 states have internal predecessors, (13122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9624 states to 9624 states and 13122 transitions. [2022-11-20 20:10:07,091 INFO L78 Accepts]: Start accepts. Automaton has 9624 states and 13122 transitions. Word has length 73 [2022-11-20 20:10:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:07,091 INFO L495 AbstractCegarLoop]: Abstraction has 9624 states and 13122 transitions. [2022-11-20 20:10:07,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:07,091 INFO L276 IsEmpty]: Start isEmpty. Operand 9624 states and 13122 transitions. [2022-11-20 20:10:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 20:10:07,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:07,093 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] [2022-11-20 20:10:07,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 20:10:07,094 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:10:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:07,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1557339149, now seen corresponding path program 1 times [2022-11-20 20:10:07,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:07,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902035999] [2022-11-20 20:10:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:07,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:07,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:07,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902035999] [2022-11-20 20:10:07,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902035999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:07,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:07,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:10:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807084820] [2022-11-20 20:10:07,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:07,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:10:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:10:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:10:07,597 INFO L87 Difference]: Start difference. First operand 9624 states and 13122 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:25,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:25,242 INFO L93 Difference]: Finished difference Result 17199 states and 23315 transitions. [2022-11-20 20:10:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:10:25,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-20 20:10:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:25,263 INFO L225 Difference]: With dead ends: 17199 [2022-11-20 20:10:25,263 INFO L226 Difference]: Without dead ends: 16633 [2022-11-20 20:10:25,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-20 20:10:25,267 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 4895 mSDsluCounter, 5194 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 6328 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:25,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4895 Valid, 6328 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:10:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16633 states. [2022-11-20 20:10:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16633 to 9620. [2022-11-20 20:10:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9620 states, 9618 states have (on average 1.3637970472031606) internal successors, (13117), 9619 states have internal predecessors, (13117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9620 states to 9620 states and 13117 transitions. [2022-11-20 20:10:33,634 INFO L78 Accepts]: Start accepts. Automaton has 9620 states and 13117 transitions. Word has length 73 [2022-11-20 20:10:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:33,634 INFO L495 AbstractCegarLoop]: Abstraction has 9620 states and 13117 transitions. [2022-11-20 20:10:33,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9620 states and 13117 transitions. [2022-11-20 20:10:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 20:10:33,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:33,636 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] [2022-11-20 20:10:33,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 20:10:33,636 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:10:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash 770378501, now seen corresponding path program 1 times [2022-11-20 20:10:33,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:33,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540615253] [2022-11-20 20:10:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:33,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:34,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:34,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540615253] [2022-11-20 20:10:34,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540615253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:34,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:34,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:10:34,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855685938] [2022-11-20 20:10:34,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:34,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:10:34,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:34,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:10:34,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:10:34,040 INFO L87 Difference]: Start difference. First operand 9620 states and 13117 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:51,235 INFO L93 Difference]: Finished difference Result 17226 states and 23343 transitions. [2022-11-20 20:10:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:10:51,236 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-20 20:10:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:51,256 INFO L225 Difference]: With dead ends: 17226 [2022-11-20 20:10:51,256 INFO L226 Difference]: Without dead ends: 16629 [2022-11-20 20:10:51,259 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 [2022-11-20 20:10:51,259 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 4945 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4945 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:51,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4945 Valid, 3644 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:10:51,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16629 states. [2022-11-20 20:10:59,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16629 to 9585. [2022-11-20 20:10:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9585 states, 9584 states have (on average 1.3642529215358932) internal successors, (13075), 9584 states have internal predecessors, (13075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 13075 transitions. [2022-11-20 20:10:59,655 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 13075 transitions. Word has length 73 [2022-11-20 20:10:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:59,655 INFO L495 AbstractCegarLoop]: Abstraction has 9585 states and 13075 transitions. [2022-11-20 20:10:59,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 13075 transitions. [2022-11-20 20:10:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 20:10:59,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:59,659 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] [2022-11-20 20:10:59,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-20 20:10:59,659 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:10:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash -397158000, now seen corresponding path program 1 times [2022-11-20 20:10:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:59,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57409604] [2022-11-20 20:10:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:59,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:59,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57409604] [2022-11-20 20:10:59,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57409604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:59,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:59,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:10:59,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318274002] [2022-11-20 20:10:59,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:59,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:10:59,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:10:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:59,770 INFO L87 Difference]: Start difference. First operand 9585 states and 13075 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:11:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:11:12,199 INFO L93 Difference]: Finished difference Result 22633 states and 31293 transitions. [2022-11-20 20:11:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:11:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-20 20:11:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:11:12,217 INFO L225 Difference]: With dead ends: 22633 [2022-11-20 20:11:12,217 INFO L226 Difference]: Without dead ends: 14183 [2022-11-20 20:11:12,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:11:12,223 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 623 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:11:12,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1374 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:11:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14183 states. [2022-11-20 20:11:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14183 to 13163. [2022-11-20 20:11:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.361951071265765) internal successors, (17926), 13162 states have internal predecessors, (17926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:11:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 17926 transitions. [2022-11-20 20:11:23,660 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 17926 transitions. Word has length 73 [2022-11-20 20:11:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:11:23,660 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 17926 transitions. [2022-11-20 20:11:23,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:11:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 17926 transitions. [2022-11-20 20:11:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 20:11:23,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:23,662 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] [2022-11-20 20:11:23,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-20 20:11:23,662 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:11:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash 491799337, now seen corresponding path program 1 times [2022-11-20 20:11:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:11:23,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021801850] [2022-11-20 20:11:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:23,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:11:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:11:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:23,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:11:23,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021801850] [2022-11-20 20:11:23,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021801850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:11:23,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:11:23,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:11:23,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827314788] [2022-11-20 20:11:23,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:11:23,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:11:23,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:11:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:11:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:11:23,780 INFO L87 Difference]: Start difference. First operand 13163 states and 17926 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:11:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:11:35,272 INFO L93 Difference]: Finished difference Result 24435 states and 33470 transitions. [2022-11-20 20:11:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:11:35,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-20 20:11:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:11:35,287 INFO L225 Difference]: With dead ends: 24435 [2022-11-20 20:11:35,287 INFO L226 Difference]: Without dead ends: 12439 [2022-11-20 20:11:35,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:11:35,297 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 2467 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:11:35,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2467 Valid, 1399 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:11:35,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2022-11-20 20:11:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 12433. [2022-11-20 20:11:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12433 states, 12432 states have (on average 1.3564189189189189) internal successors, (16863), 12432 states have internal predecessors, (16863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:11:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12433 states to 12433 states and 16863 transitions. [2022-11-20 20:11:46,566 INFO L78 Accepts]: Start accepts. Automaton has 12433 states and 16863 transitions. Word has length 73 [2022-11-20 20:11:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:11:46,566 INFO L495 AbstractCegarLoop]: Abstraction has 12433 states and 16863 transitions. [2022-11-20 20:11:46,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:11:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 12433 states and 16863 transitions. [2022-11-20 20:11:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 20:11:46,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:46,568 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] [2022-11-20 20:11:46,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-20 20:11:46,569 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:11:46,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash 438553479, now seen corresponding path program 1 times [2022-11-20 20:11:46,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:11:46,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862786184] [2022-11-20 20:11:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:46,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:11:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:11:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:46,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:11:46,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862786184] [2022-11-20 20:11:46,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862786184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:11:46,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:11:46,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:11:46,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512027293] [2022-11-20 20:11:46,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:11:46,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:11:46,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:11:46,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:11:46,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:11:46,669 INFO L87 Difference]: Start difference. First operand 12433 states and 16863 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:12:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:12:03,764 INFO L93 Difference]: Finished difference Result 29660 states and 40659 transitions. [2022-11-20 20:12:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:12:03,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-11-20 20:12:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:12:03,787 INFO L225 Difference]: With dead ends: 29660 [2022-11-20 20:12:03,787 INFO L226 Difference]: Without dead ends: 18758 [2022-11-20 20:12:03,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:12:03,795 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 529 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:12:03,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1398 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:12:03,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18758 states. [2022-11-20 20:12:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18758 to 17324. [2022-11-20 20:12:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17324 states, 17323 states have (on average 1.351324828263003) internal successors, (23409), 17323 states have internal predecessors, (23409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:12:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17324 states to 17324 states and 23409 transitions. [2022-11-20 20:12:19,648 INFO L78 Accepts]: Start accepts. Automaton has 17324 states and 23409 transitions. Word has length 75 [2022-11-20 20:12:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:12:19,649 INFO L495 AbstractCegarLoop]: Abstraction has 17324 states and 23409 transitions. [2022-11-20 20:12:19,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:12:19,649 INFO L276 IsEmpty]: Start isEmpty. Operand 17324 states and 23409 transitions. [2022-11-20 20:12:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 20:12:19,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:12:19,651 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] [2022-11-20 20:12:19,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-20 20:12:19,651 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:12:19,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:12:19,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1140941538, now seen corresponding path program 1 times [2022-11-20 20:12:19,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:12:19,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65120876] [2022-11-20 20:12:19,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:12:19,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:12:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:12:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:12:19,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:12:19,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65120876] [2022-11-20 20:12:19,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65120876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:12:19,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:12:19,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:12:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043475911] [2022-11-20 20:12:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:12:19,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:12:19,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:12:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:12:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:12:19,761 INFO L87 Difference]: Start difference. First operand 17324 states and 23409 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:12:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:12:43,902 INFO L93 Difference]: Finished difference Result 41600 states and 56726 transitions. [2022-11-20 20:12:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:12:43,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-11-20 20:12:43,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:12:43,939 INFO L225 Difference]: With dead ends: 41600 [2022-11-20 20:12:43,939 INFO L226 Difference]: Without dead ends: 26214 [2022-11-20 20:12:43,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:12:43,952 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 420 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:12:43,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1464 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:12:43,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26214 states. [2022-11-20 20:13:06,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26214 to 24134. [2022-11-20 20:13:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24134 states, 24133 states have (on average 1.3438445282393403) internal successors, (32431), 24133 states have internal predecessors, (32431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:13:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24134 states to 24134 states and 32431 transitions. [2022-11-20 20:13:06,442 INFO L78 Accepts]: Start accepts. Automaton has 24134 states and 32431 transitions. Word has length 78 [2022-11-20 20:13:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:13:06,442 INFO L495 AbstractCegarLoop]: Abstraction has 24134 states and 32431 transitions. [2022-11-20 20:13:06,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:13:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24134 states and 32431 transitions. [2022-11-20 20:13:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 20:13:06,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:06,446 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] [2022-11-20 20:13:06,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-20 20:13:06,446 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:13:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:06,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1875624208, now seen corresponding path program 1 times [2022-11-20 20:13:06,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:06,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897576966] [2022-11-20 20:13:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:06,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:13:06,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:06,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897576966] [2022-11-20 20:13:06,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897576966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:13:06,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:13:06,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:13:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312973011] [2022-11-20 20:13:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:13:06,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:13:06,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:13:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:13:06,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:13:06,750 INFO L87 Difference]: Start difference. First operand 24134 states and 32431 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:14:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:09,709 INFO L93 Difference]: Finished difference Result 58731 states and 78403 transitions. [2022-11-20 20:14:09,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 20:14:09,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-11-20 20:14:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:09,807 INFO L225 Difference]: With dead ends: 58731 [2022-11-20 20:14:09,807 INFO L226 Difference]: Without dead ends: 58729 [2022-11-20 20:14:09,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2022-11-20 20:14:09,821 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 4759 mSDsluCounter, 4239 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 5339 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:09,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4759 Valid, 5339 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:14:09,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58729 states. [2022-11-20 20:14:38,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58729 to 26241. [2022-11-20 20:14:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26241 states, 26240 states have (on average 1.3388338414634147) internal successors, (35131), 26240 states have internal predecessors, (35131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:14:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26241 states to 26241 states and 35131 transitions. [2022-11-20 20:14:38,863 INFO L78 Accepts]: Start accepts. Automaton has 26241 states and 35131 transitions. Word has length 82 [2022-11-20 20:14:38,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:38,864 INFO L495 AbstractCegarLoop]: Abstraction has 26241 states and 35131 transitions. [2022-11-20 20:14:38,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:14:38,864 INFO L276 IsEmpty]: Start isEmpty. Operand 26241 states and 35131 transitions. [2022-11-20 20:14:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 20:14:38,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:38,867 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] [2022-11-20 20:14:38,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-20 20:14:38,867 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-20 20:14:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash 587842462, now seen corresponding path program 1 times [2022-11-20 20:14:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:14:38,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839327692] [2022-11-20 20:14:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:14:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:14:38,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:14:38,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839327692] [2022-11-20 20:14:38,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839327692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:38,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:38,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:14:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452651290] [2022-11-20 20:14:38,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:38,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:38,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:14:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:38,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:14:38,980 INFO L87 Difference]: Start difference. First operand 26241 states and 35131 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)