./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --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 ef1b718ec14fcc68d212ba49eb2094855200a064b5887a7f2eecdbae8074f363 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:47:34,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:47:34,435 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:47:34,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:47:34,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:47:34,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:47:34,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:47:34,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:47:34,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:47:34,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:47:34,490 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:47:34,491 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:47:34,492 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:47:34,494 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:47:34,495 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:47:34,495 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:47:34,496 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:47:34,497 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:47:34,497 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:47:34,498 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:47:34,498 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:47:34,499 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:47:34,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:47:34,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:47:34,502 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:47:34,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:47:34,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:47:34,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:47:34,504 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:47:34,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:47:34,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:47:34,507 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:47:34,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:47:34,507 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:47:34,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:47:34,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:47:34,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:34,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:47:34,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:47:34,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:47:34,511 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:47:34,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:47:34,512 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:47:34,512 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:47:34,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:47:34,513 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef1b718ec14fcc68d212ba49eb2094855200a064b5887a7f2eecdbae8074f363 [2023-11-12 00:47:34,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:47:34,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:47:34,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:47:34,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:47:34,886 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:47:34,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-11-12 00:47:38,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:47:38,538 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:47:38,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-11-12 00:47:38,565 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/data/5bb661143/14591da3acd047d9a03951adaf703cf7/FLAG9722eabda [2023-11-12 00:47:38,586 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/data/5bb661143/14591da3acd047d9a03951adaf703cf7 [2023-11-12 00:47:38,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:47:38,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:47:38,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:38,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:47:38,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:47:38,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:38" (1/1) ... [2023-11-12 00:47:38,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfcf973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:38, skipping insertion in model container [2023-11-12 00:47:38,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:38" (1/1) ... [2023-11-12 00:47:38,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:47:39,277 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11563,11576] [2023-11-12 00:47:39,344 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15640,15653] [2023-11-12 00:47:39,376 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16861,16874] [2023-11-12 00:47:39,384 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17567,17580] [2023-11-12 00:47:39,398 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19153,19166] [2023-11-12 00:47:39,406 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19859,19872] [2023-11-12 00:47:39,417 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20930,20943] [2023-11-12 00:47:39,437 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23420,23433] [2023-11-12 00:47:39,444 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24129,24142] [2023-11-12 00:47:39,454 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25166,25179] [2023-11-12 00:47:39,471 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27104,27117] [2023-11-12 00:47:39,504 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31138,31151] [2023-11-12 00:47:39,517 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31847,31860] [2023-11-12 00:47:39,543 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32921,32934] [2023-11-12 00:47:39,559 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34896,34909] [2023-11-12 00:47:39,583 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38277,38290] [2023-11-12 00:47:39,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:39,984 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:47:40,084 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11563,11576] [2023-11-12 00:47:40,103 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15640,15653] [2023-11-12 00:47:40,111 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16861,16874] [2023-11-12 00:47:40,117 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17567,17580] [2023-11-12 00:47:40,129 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19153,19166] [2023-11-12 00:47:40,135 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19859,19872] [2023-11-12 00:47:40,142 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20930,20943] [2023-11-12 00:47:40,155 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23420,23433] [2023-11-12 00:47:40,160 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24129,24142] [2023-11-12 00:47:40,166 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25166,25179] [2023-11-12 00:47:40,178 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27104,27117] [2023-11-12 00:47:40,196 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31138,31151] [2023-11-12 00:47:40,201 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31847,31860] [2023-11-12 00:47:40,207 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32921,32934] [2023-11-12 00:47:40,216 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34896,34909] [2023-11-12 00:47:40,230 WARN L240 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_1bacc4ff-9338-4381-85ee-920aafa3c41c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38277,38290] [2023-11-12 00:47:40,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:40,491 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:47:40,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40 WrapperNode [2023-11-12 00:47:40,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:40,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:40,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:47:40,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:47:40,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,677 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3753 [2023-11-12 00:47:40,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:40,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:47:40,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:47:40,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:47:40,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:47:40,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:47:40,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:47:40,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:47:40,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (1/1) ... [2023-11-12 00:47:40,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:40,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:47:40,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:47:40,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bacc4ff-9338-4381-85ee-920aafa3c41c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:47:40,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:47:40,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:47:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:47:40,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:47:41,146 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:47:41,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:47:43,419 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:47:43,651 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:47:43,651 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:47:43,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:43 BoogieIcfgContainer [2023-11-12 00:47:43,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:47:43,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:47:43,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:47:43,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:47:43,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:47:38" (1/3) ... [2023-11-12 00:47:43,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa5d5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:43, skipping insertion in model container [2023-11-12 00:47:43,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:40" (2/3) ... [2023-11-12 00:47:43,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa5d5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:43, skipping insertion in model container [2023-11-12 00:47:43,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:43" (3/3) ... [2023-11-12 00:47:43,670 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-11-12 00:47:43,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:47:43,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-12 00:47:43,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:47:43,796 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=LoopHeads, 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;@7ae3388, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:47:43,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 00:47:43,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 607 states, 589 states have (on average 1.8539898132427843) internal successors, (1092), 606 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 00:47:43,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:43,828 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] [2023-11-12 00:47:43,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:43,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash 533676138, now seen corresponding path program 1 times [2023-11-12 00:47:43,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:43,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034094621] [2023-11-12 00:47:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:43,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:44,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:44,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034094621] [2023-11-12 00:47:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034094621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:44,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:47:44,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727708889] [2023-11-12 00:47:44,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:44,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:47:44,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:44,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:47:44,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:47:44,658 INFO L87 Difference]: Start difference. First operand has 607 states, 589 states have (on average 1.8539898132427843) internal successors, (1092), 606 states have internal predecessors, (1092), 0 states have call successors, (0), 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 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:45,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:45,380 INFO L93 Difference]: Finished difference Result 931 states and 1613 transitions. [2023-11-12 00:47:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:47:45,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-12 00:47:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:45,412 INFO L225 Difference]: With dead ends: 931 [2023-11-12 00:47:45,412 INFO L226 Difference]: Without dead ends: 488 [2023-11-12 00:47:45,422 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 [2023-11-12 00:47:45,430 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 2429 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2429 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:45,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2429 Valid, 597 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:47:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-12 00:47:45,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2023-11-12 00:47:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 472 states have (on average 1.2796610169491525) internal successors, (604), 487 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 604 transitions. [2023-11-12 00:47:45,517 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 604 transitions. Word has length 71 [2023-11-12 00:47:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:45,517 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 604 transitions. [2023-11-12 00:47:45,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 604 transitions. [2023-11-12 00:47:45,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-12 00:47:45,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:45,523 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] [2023-11-12 00:47:45,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:47:45,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:45,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1104820237, now seen corresponding path program 1 times [2023-11-12 00:47:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:45,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970826530] [2023-11-12 00:47:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:45,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:45,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970826530] [2023-11-12 00:47:45,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970826530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:45,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:45,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:47:45,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174598829] [2023-11-12 00:47:45,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:45,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:47:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:45,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:47:45,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:47:45,809 INFO L87 Difference]: Start difference. First operand 488 states and 604 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 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) [2023-11-12 00:47:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:46,250 INFO L93 Difference]: Finished difference Result 805 states and 1022 transitions. [2023-11-12 00:47:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:47:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 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 [2023-11-12 00:47:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:46,254 INFO L225 Difference]: With dead ends: 805 [2023-11-12 00:47:46,254 INFO L226 Difference]: Without dead ends: 436 [2023-11-12 00:47:46,256 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 [2023-11-12 00:47:46,258 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1548 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:46,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 320 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:47:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-12 00:47:46,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2023-11-12 00:47:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 420 states have (on average 1.292857142857143) internal successors, (543), 435 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 543 transitions. [2023-11-12 00:47:46,290 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 543 transitions. Word has length 72 [2023-11-12 00:47:46,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:46,291 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 543 transitions. [2023-11-12 00:47:46,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 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) [2023-11-12 00:47:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 543 transitions. [2023-11-12 00:47:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 00:47:46,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:46,299 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] [2023-11-12 00:47:46,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:47:46,300 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:46,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash -408282613, now seen corresponding path program 1 times [2023-11-12 00:47:46,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:46,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186436617] [2023-11-12 00:47:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:46,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:46,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:46,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186436617] [2023-11-12 00:47:46,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186436617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:46,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:46,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:47:46,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635742552] [2023-11-12 00:47:46,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:46,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:47:46,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:46,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:47:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:47:46,600 INFO L87 Difference]: Start difference. First operand 436 states and 543 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 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) [2023-11-12 00:47:47,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:47,032 INFO L93 Difference]: Finished difference Result 753 states and 960 transitions. [2023-11-12 00:47:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:47:47,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 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 [2023-11-12 00:47:47,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:47,038 INFO L225 Difference]: With dead ends: 753 [2023-11-12 00:47:47,038 INFO L226 Difference]: Without dead ends: 398 [2023-11-12 00:47:47,039 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 [2023-11-12 00:47:47,041 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 1446 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:47,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 296 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:47:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-11-12 00:47:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2023-11-12 00:47:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 382 states have (on average 1.3089005235602094) internal successors, (500), 397 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 500 transitions. [2023-11-12 00:47:47,071 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 500 transitions. Word has length 73 [2023-11-12 00:47:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:47,071 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 500 transitions. [2023-11-12 00:47:47,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 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) [2023-11-12 00:47:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 500 transitions. [2023-11-12 00:47:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-12 00:47:47,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:47,077 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] [2023-11-12 00:47:47,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:47:47,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:47,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1224504254, now seen corresponding path program 1 times [2023-11-12 00:47:47,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:47,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306428832] [2023-11-12 00:47:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:47,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:47,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:47,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306428832] [2023-11-12 00:47:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306428832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:47,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:47,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:47:47,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837409515] [2023-11-12 00:47:47,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:47,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:47:47,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:47,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:47:47,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:47:47,428 INFO L87 Difference]: Start difference. First operand 398 states and 500 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:48,025 INFO L93 Difference]: Finished difference Result 908 states and 1162 transitions. [2023-11-12 00:47:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:47:48,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-11-12 00:47:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:48,030 INFO L225 Difference]: With dead ends: 908 [2023-11-12 00:47:48,030 INFO L226 Difference]: Without dead ends: 569 [2023-11-12 00:47:48,031 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 [2023-11-12 00:47:48,032 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1805 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:48,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 432 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:47:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-11-12 00:47:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 509. [2023-11-12 00:47:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 493 states have (on average 1.356997971602434) internal successors, (669), 508 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 669 transitions. [2023-11-12 00:47:48,059 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 669 transitions. Word has length 74 [2023-11-12 00:47:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:48,061 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 669 transitions. [2023-11-12 00:47:48,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 669 transitions. [2023-11-12 00:47:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 00:47:48,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:48,064 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] [2023-11-12 00:47:48,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:47:48,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:48,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:48,066 INFO L85 PathProgramCache]: Analyzing trace with hash 254667180, now seen corresponding path program 1 times [2023-11-12 00:47:48,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:48,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559365568] [2023-11-12 00:47:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:48,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:48,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:48,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559365568] [2023-11-12 00:47:48,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559365568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:48,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:48,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:47:48,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978958561] [2023-11-12 00:47:48,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:48,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:47:48,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:47:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:47:48,313 INFO L87 Difference]: Start difference. First operand 509 states and 669 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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) [2023-11-12 00:47:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:48,723 INFO L93 Difference]: Finished difference Result 959 states and 1278 transitions. [2023-11-12 00:47:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:47:48,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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 [2023-11-12 00:47:48,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:48,727 INFO L225 Difference]: With dead ends: 959 [2023-11-12 00:47:48,727 INFO L226 Difference]: Without dead ends: 504 [2023-11-12 00:47:48,728 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 [2023-11-12 00:47:48,729 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1305 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:48,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 257 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:47:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-11-12 00:47:48,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2023-11-12 00:47:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3545081967213115) internal successors, (661), 503 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 661 transitions. [2023-11-12 00:47:48,746 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 661 transitions. Word has length 75 [2023-11-12 00:47:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:48,746 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 661 transitions. [2023-11-12 00:47:48,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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) [2023-11-12 00:47:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 661 transitions. [2023-11-12 00:47:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 00:47:48,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:48,749 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] [2023-11-12 00:47:48,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:47:48,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:48,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1435179207, now seen corresponding path program 1 times [2023-11-12 00:47:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:48,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081014087] [2023-11-12 00:47:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:49,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081014087] [2023-11-12 00:47:49,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081014087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:49,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:49,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:47:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556531220] [2023-11-12 00:47:49,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:49,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:47:49,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:49,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:47:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:47:49,257 INFO L87 Difference]: Start difference. First operand 504 states and 661 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:50,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:50,609 INFO L93 Difference]: Finished difference Result 1078 states and 1417 transitions. [2023-11-12 00:47:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:47:50,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-11-12 00:47:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:50,617 INFO L225 Difference]: With dead ends: 1078 [2023-11-12 00:47:50,618 INFO L226 Difference]: Without dead ends: 967 [2023-11-12 00:47:50,619 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 [2023-11-12 00:47:50,620 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1623 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:50,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 1617 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 00:47:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-12 00:47:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 504. [2023-11-12 00:47:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3524590163934427) internal successors, (660), 503 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 660 transitions. [2023-11-12 00:47:50,652 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 660 transitions. Word has length 76 [2023-11-12 00:47:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:50,654 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 660 transitions. [2023-11-12 00:47:50,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:50,655 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 660 transitions. [2023-11-12 00:47:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 00:47:50,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:50,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:47:50,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:47:50,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:50,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash 980279151, now seen corresponding path program 1 times [2023-11-12 00:47:50,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:50,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418257928] [2023-11-12 00:47:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:51,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:51,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418257928] [2023-11-12 00:47:51,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418257928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:51,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:51,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:47:51,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655110241] [2023-11-12 00:47:51,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:51,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:47:51,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:51,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:47:51,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:47:51,143 INFO L87 Difference]: Start difference. First operand 504 states and 660 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:52,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:52,183 INFO L93 Difference]: Finished difference Result 941 states and 1223 transitions. [2023-11-12 00:47:52,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:47:52,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-11-12 00:47:52,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:52,189 INFO L225 Difference]: With dead ends: 941 [2023-11-12 00:47:52,189 INFO L226 Difference]: Without dead ends: 791 [2023-11-12 00:47:52,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:47:52,191 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1662 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:52,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 1248 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:47:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-11-12 00:47:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 504. [2023-11-12 00:47:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3504098360655739) internal successors, (659), 503 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 659 transitions. [2023-11-12 00:47:52,210 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 659 transitions. Word has length 76 [2023-11-12 00:47:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:52,211 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 659 transitions. [2023-11-12 00:47:52,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 659 transitions. [2023-11-12 00:47:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 00:47:52,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:52,213 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] [2023-11-12 00:47:52,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:47:52,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:52,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:52,214 INFO L85 PathProgramCache]: Analyzing trace with hash -612595194, now seen corresponding path program 1 times [2023-11-12 00:47:52,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:52,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298714168] [2023-11-12 00:47:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:52,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:52,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:52,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298714168] [2023-11-12 00:47:52,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298714168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:52,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:52,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:47:52,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122413924] [2023-11-12 00:47:52,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:52,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:47:52,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:47:52,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:47:52,848 INFO L87 Difference]: Start difference. First operand 504 states and 659 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:54,060 INFO L93 Difference]: Finished difference Result 1045 states and 1363 transitions. [2023-11-12 00:47:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:47:54,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-11-12 00:47:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:54,066 INFO L225 Difference]: With dead ends: 1045 [2023-11-12 00:47:54,067 INFO L226 Difference]: Without dead ends: 935 [2023-11-12 00:47:54,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:47:54,068 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1561 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:54,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 1525 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 00:47:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2023-11-12 00:47:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 504. [2023-11-12 00:47:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.346311475409836) internal successors, (657), 503 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 657 transitions. [2023-11-12 00:47:54,091 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 657 transitions. Word has length 76 [2023-11-12 00:47:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:54,092 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 657 transitions. [2023-11-12 00:47:54,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 657 transitions. [2023-11-12 00:47:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 00:47:54,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:54,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:47:54,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:47:54,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:54,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:54,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1770175000, now seen corresponding path program 1 times [2023-11-12 00:47:54,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:54,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56794164] [2023-11-12 00:47:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:54,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56794164] [2023-11-12 00:47:54,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56794164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:54,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:54,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:47:54,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182940558] [2023-11-12 00:47:54,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:54,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:47:54,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:47:54,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:47:54,588 INFO L87 Difference]: Start difference. First operand 504 states and 657 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:55,360 INFO L93 Difference]: Finished difference Result 927 states and 1167 transitions. [2023-11-12 00:47:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:47:55,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-11-12 00:47:55,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:55,365 INFO L225 Difference]: With dead ends: 927 [2023-11-12 00:47:55,366 INFO L226 Difference]: Without dead ends: 693 [2023-11-12 00:47:55,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:47:55,367 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1389 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:55,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 709 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:47:55,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-11-12 00:47:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 504. [2023-11-12 00:47:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3442622950819672) internal successors, (656), 503 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 656 transitions. [2023-11-12 00:47:55,387 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 656 transitions. Word has length 76 [2023-11-12 00:47:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:55,387 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 656 transitions. [2023-11-12 00:47:55,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 656 transitions. [2023-11-12 00:47:55,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 00:47:55,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:55,390 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, 1, 1, 1, 1, 1, 1] [2023-11-12 00:47:55,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:47:55,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:55,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash -988049107, now seen corresponding path program 1 times [2023-11-12 00:47:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580022629] [2023-11-12 00:47:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:55,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:55,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:55,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580022629] [2023-11-12 00:47:55,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580022629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:55,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:55,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:47:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897614307] [2023-11-12 00:47:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:55,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:47:55,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:47:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:47:55,815 INFO L87 Difference]: Start difference. First operand 504 states and 656 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:47:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:57,097 INFO L93 Difference]: Finished difference Result 1087 states and 1419 transitions. [2023-11-12 00:47:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:47:57,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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 [2023-11-12 00:47:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:57,104 INFO L225 Difference]: With dead ends: 1087 [2023-11-12 00:47:57,104 INFO L226 Difference]: Without dead ends: 967 [2023-11-12 00:47:57,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:47:57,106 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1285 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:57,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1418 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 00:47:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-12 00:47:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 504. [2023-11-12 00:47:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3422131147540983) internal successors, (655), 503 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 655 transitions. [2023-11-12 00:47:57,127 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 655 transitions. Word has length 78 [2023-11-12 00:47:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:57,127 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 655 transitions. [2023-11-12 00:47:57,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:47:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 655 transitions. [2023-11-12 00:47:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 00:47:57,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:57,130 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] [2023-11-12 00:47:57,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:47:57,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:57,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:57,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1396894335, now seen corresponding path program 1 times [2023-11-12 00:47:57,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:57,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859096256] [2023-11-12 00:47:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:57,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:57,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:57,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859096256] [2023-11-12 00:47:57,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859096256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:57,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:57,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:47:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493163928] [2023-11-12 00:47:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:57,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:47:57,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:47:57,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:47:57,533 INFO L87 Difference]: Start difference. First operand 504 states and 655 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:47:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:58,730 INFO L93 Difference]: Finished difference Result 1041 states and 1352 transitions. [2023-11-12 00:47:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:47:58,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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 [2023-11-12 00:47:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:58,736 INFO L225 Difference]: With dead ends: 1041 [2023-11-12 00:47:58,737 INFO L226 Difference]: Without dead ends: 943 [2023-11-12 00:47:58,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-11-12 00:47:58,738 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1820 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:58,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1820 Valid, 1435 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:47:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-11-12 00:47:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 504. [2023-11-12 00:47:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3401639344262295) internal successors, (654), 503 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 654 transitions. [2023-11-12 00:47:58,757 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 654 transitions. Word has length 78 [2023-11-12 00:47:58,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:58,757 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 654 transitions. [2023-11-12 00:47:58,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:47:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 654 transitions. [2023-11-12 00:47:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 00:47:58,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:58,781 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] [2023-11-12 00:47:58,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:47:58,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:47:58,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:58,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1028792160, now seen corresponding path program 1 times [2023-11-12 00:47:58,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:58,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064743960] [2023-11-12 00:47:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:58,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:59,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:47:59,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064743960] [2023-11-12 00:47:59,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064743960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:59,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:59,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 00:47:59,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567540415] [2023-11-12 00:47:59,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:59,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:47:59,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:47:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:47:59,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:47:59,442 INFO L87 Difference]: Start difference. First operand 504 states and 654 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 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) [2023-11-12 00:48:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:01,854 INFO L93 Difference]: Finished difference Result 1542 states and 2014 transitions. [2023-11-12 00:48:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-12 00:48:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 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 [2023-11-12 00:48:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:01,864 INFO L225 Difference]: With dead ends: 1542 [2023-11-12 00:48:01,864 INFO L226 Difference]: Without dead ends: 1444 [2023-11-12 00:48:01,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-11-12 00:48:01,866 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 3667 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3667 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:01,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3667 Valid, 1855 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 00:48:01,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2023-11-12 00:48:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 508. [2023-11-12 00:48:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3373983739837398) internal successors, (658), 507 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 658 transitions. [2023-11-12 00:48:01,890 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 658 transitions. Word has length 78 [2023-11-12 00:48:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:01,891 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 658 transitions. [2023-11-12 00:48:01,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 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) [2023-11-12 00:48:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 658 transitions. [2023-11-12 00:48:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 00:48:01,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:01,893 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] [2023-11-12 00:48:01,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:48:01,894 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:48:01,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash -391975036, now seen corresponding path program 1 times [2023-11-12 00:48:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:01,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644696462] [2023-11-12 00:48:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:01,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:02,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644696462] [2023-11-12 00:48:02,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644696462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:02,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:02,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:48:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608593572] [2023-11-12 00:48:02,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:02,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:48:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:02,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:48:02,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:48:02,308 INFO L87 Difference]: Start difference. First operand 508 states and 658 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:48:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:03,562 INFO L93 Difference]: Finished difference Result 1037 states and 1346 transitions. [2023-11-12 00:48:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:48:03,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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 [2023-11-12 00:48:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:03,569 INFO L225 Difference]: With dead ends: 1037 [2023-11-12 00:48:03,569 INFO L226 Difference]: Without dead ends: 943 [2023-11-12 00:48:03,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-11-12 00:48:03,571 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 1847 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:03,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 1389 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 00:48:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-11-12 00:48:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 508. [2023-11-12 00:48:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3353658536585367) internal successors, (657), 507 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 657 transitions. [2023-11-12 00:48:03,593 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 657 transitions. Word has length 78 [2023-11-12 00:48:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:03,593 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 657 transitions. [2023-11-12 00:48:03,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:48:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 657 transitions. [2023-11-12 00:48:03,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 00:48:03,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:03,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:03,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 00:48:03,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:48:03,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash -909514375, now seen corresponding path program 1 times [2023-11-12 00:48:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:03,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184648380] [2023-11-12 00:48:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:04,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:04,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184648380] [2023-11-12 00:48:04,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184648380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:04,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:04,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:48:04,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468897247] [2023-11-12 00:48:04,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:04,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:48:04,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:48:04,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:48:04,237 INFO L87 Difference]: Start difference. First operand 508 states and 657 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 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) [2023-11-12 00:48:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:05,798 INFO L93 Difference]: Finished difference Result 870 states and 1130 transitions. [2023-11-12 00:48:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 00:48:05,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 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 [2023-11-12 00:48:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:05,803 INFO L225 Difference]: With dead ends: 870 [2023-11-12 00:48:05,803 INFO L226 Difference]: Without dead ends: 654 [2023-11-12 00:48:05,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2023-11-12 00:48:05,808 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1668 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:05,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 1843 Invalid, 1608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 00:48:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2023-11-12 00:48:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 508. [2023-11-12 00:48:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.33130081300813) internal successors, (655), 507 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 655 transitions. [2023-11-12 00:48:05,828 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 655 transitions. Word has length 78 [2023-11-12 00:48:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:05,830 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 655 transitions. [2023-11-12 00:48:05,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 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) [2023-11-12 00:48:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 655 transitions. [2023-11-12 00:48:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 00:48:05,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:05,832 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] [2023-11-12 00:48:05,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 00:48:05,833 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:48:05,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:05,834 INFO L85 PathProgramCache]: Analyzing trace with hash 423246883, now seen corresponding path program 1 times [2023-11-12 00:48:05,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:05,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463927404] [2023-11-12 00:48:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:05,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:06,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:06,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463927404] [2023-11-12 00:48:06,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463927404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:06,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:06,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:48:06,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972138987] [2023-11-12 00:48:06,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:06,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:48:06,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:48:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:48:06,250 INFO L87 Difference]: Start difference. First operand 508 states and 655 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:48:07,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:07,348 INFO L93 Difference]: Finished difference Result 1047 states and 1355 transitions. [2023-11-12 00:48:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:48:07,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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 [2023-11-12 00:48:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:07,355 INFO L225 Difference]: With dead ends: 1047 [2023-11-12 00:48:07,355 INFO L226 Difference]: Without dead ends: 943 [2023-11-12 00:48:07,356 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 [2023-11-12 00:48:07,357 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 1781 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:07,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1781 Valid, 1443 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:48:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-11-12 00:48:07,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 508. [2023-11-12 00:48:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3272357723577235) internal successors, (653), 507 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 653 transitions. [2023-11-12 00:48:07,377 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 653 transitions. Word has length 78 [2023-11-12 00:48:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:07,377 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 653 transitions. [2023-11-12 00:48:07,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:48:07,378 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 653 transitions. [2023-11-12 00:48:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 00:48:07,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:07,380 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] [2023-11-12 00:48:07,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 00:48:07,381 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:48:07,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash 832092111, now seen corresponding path program 1 times [2023-11-12 00:48:07,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:07,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319142144] [2023-11-12 00:48:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:07,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:07,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:07,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:07,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319142144] [2023-11-12 00:48:07,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319142144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:07,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:07,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:48:07,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682936299] [2023-11-12 00:48:07,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:07,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:48:07,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:48:07,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:48:07,831 INFO L87 Difference]: Start difference. First operand 508 states and 653 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:48:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:09,230 INFO L93 Difference]: Finished difference Result 1101 states and 1428 transitions. [2023-11-12 00:48:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:48:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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 [2023-11-12 00:48:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:09,237 INFO L225 Difference]: With dead ends: 1101 [2023-11-12 00:48:09,238 INFO L226 Difference]: Without dead ends: 971 [2023-11-12 00:48:09,239 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 [2023-11-12 00:48:09,239 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 1566 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:09,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 2204 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 00:48:09,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-11-12 00:48:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 508. [2023-11-12 00:48:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3231707317073171) internal successors, (651), 507 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 651 transitions. [2023-11-12 00:48:09,261 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 651 transitions. Word has length 78 [2023-11-12 00:48:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:09,262 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 651 transitions. [2023-11-12 00:48:09,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2023-11-12 00:48:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 651 transitions. [2023-11-12 00:48:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 00:48:09,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:09,265 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] [2023-11-12 00:48:09,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 00:48:09,265 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:48:09,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash -931365883, now seen corresponding path program 1 times [2023-11-12 00:48:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:09,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019261472] [2023-11-12 00:48:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:09,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:09,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019261472] [2023-11-12 00:48:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019261472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:09,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:48:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958255073] [2023-11-12 00:48:09,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:09,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:48:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:48:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:48:09,611 INFO L87 Difference]: Start difference. First operand 508 states and 651 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:10,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:10,973 INFO L93 Difference]: Finished difference Result 1041 states and 1342 transitions. [2023-11-12 00:48:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:48:10,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-12 00:48:10,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:10,980 INFO L225 Difference]: With dead ends: 1041 [2023-11-12 00:48:10,980 INFO L226 Difference]: Without dead ends: 943 [2023-11-12 00:48:10,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:48:10,983 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1128 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:10,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 1599 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 00:48:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-11-12 00:48:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 504. [2023-11-12 00:48:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3237704918032787) internal successors, (646), 503 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 646 transitions. [2023-11-12 00:48:11,008 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 646 transitions. Word has length 79 [2023-11-12 00:48:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:11,009 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 646 transitions. [2023-11-12 00:48:11,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 646 transitions. [2023-11-12 00:48:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 00:48:11,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:11,012 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] [2023-11-12 00:48:11,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 00:48:11,013 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:48:11,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash 380495892, now seen corresponding path program 1 times [2023-11-12 00:48:11,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:11,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48590824] [2023-11-12 00:48:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:11,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:11,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:11,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48590824] [2023-11-12 00:48:11,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48590824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:11,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:11,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:48:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607423650] [2023-11-12 00:48:11,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:11,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:48:11,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:48:11,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:48:11,403 INFO L87 Difference]: Start difference. First operand 504 states and 646 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:12,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:12,710 INFO L93 Difference]: Finished difference Result 1010 states and 1291 transitions. [2023-11-12 00:48:12,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:48:12,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-12 00:48:12,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:12,716 INFO L225 Difference]: With dead ends: 1010 [2023-11-12 00:48:12,717 INFO L226 Difference]: Without dead ends: 919 [2023-11-12 00:48:12,718 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 [2023-11-12 00:48:12,719 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1550 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:12,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 1720 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 00:48:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-11-12 00:48:12,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 504. [2023-11-12 00:48:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3217213114754098) internal successors, (645), 503 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 645 transitions. [2023-11-12 00:48:12,740 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 645 transitions. Word has length 80 [2023-11-12 00:48:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:12,740 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 645 transitions. [2023-11-12 00:48:12,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 645 transitions. [2023-11-12 00:48:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 00:48:12,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:12,743 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] [2023-11-12 00:48:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 00:48:12,744 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:48:12,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2002274302, now seen corresponding path program 1 times [2023-11-12 00:48:12,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:12,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336472131] [2023-11-12 00:48:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:12,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:13,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:13,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336472131] [2023-11-12 00:48:13,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336472131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:13,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:13,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 00:48:13,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123578558] [2023-11-12 00:48:13,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:13,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:48:13,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:48:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:48:13,474 INFO L87 Difference]: Start difference. First operand 504 states and 645 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:15,807 INFO L93 Difference]: Finished difference Result 1546 states and 2004 transitions. [2023-11-12 00:48:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-12 00:48:15,808 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-12 00:48:15,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:15,815 INFO L225 Difference]: With dead ends: 1546 [2023-11-12 00:48:15,815 INFO L226 Difference]: Without dead ends: 1443 [2023-11-12 00:48:15,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-11-12 00:48:15,818 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 3449 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3449 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:15,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3449 Valid, 2128 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 00:48:15,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-11-12 00:48:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 508. [2023-11-12 00:48:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3191056910569106) internal successors, (649), 507 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 649 transitions. [2023-11-12 00:48:15,844 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 649 transitions. Word has length 80 [2023-11-12 00:48:15,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:15,845 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 649 transitions. [2023-11-12 00:48:15,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:15,845 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 649 transitions. [2023-11-12 00:48:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 00:48:15,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:15,848 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] [2023-11-12 00:48:15,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 00:48:15,848 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:48:15,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash 891103228, now seen corresponding path program 1 times [2023-11-12 00:48:15,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:15,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319824634] [2023-11-12 00:48:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:16,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:16,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319824634] [2023-11-12 00:48:16,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319824634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:16,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:16,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:48:16,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766390737] [2023-11-12 00:48:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:16,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:48:16,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:48:16,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:48:16,315 INFO L87 Difference]: Start difference. First operand 508 states and 649 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:17,677 INFO L93 Difference]: Finished difference Result 1011 states and 1291 transitions. [2023-11-12 00:48:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:48:17,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-12 00:48:17,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:17,683 INFO L225 Difference]: With dead ends: 1011 [2023-11-12 00:48:17,683 INFO L226 Difference]: Without dead ends: 923 [2023-11-12 00:48:17,684 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 [2023-11-12 00:48:17,685 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1556 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:17,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1759 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 00:48:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-11-12 00:48:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 508. [2023-11-12 00:48:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3170731707317074) internal successors, (648), 507 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 648 transitions. [2023-11-12 00:48:17,715 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 648 transitions. Word has length 80 [2023-11-12 00:48:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:17,715 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 648 transitions. [2023-11-12 00:48:17,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 648 transitions. [2023-11-12 00:48:17,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 00:48:17,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:17,718 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] [2023-11-12 00:48:17,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 00:48:17,719 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-12 00:48:17,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash -374640683, now seen corresponding path program 1 times [2023-11-12 00:48:17,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:17,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426502633] [2023-11-12 00:48:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:18,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:18,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426502633] [2023-11-12 00:48:18,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426502633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:18,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:18,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 00:48:18,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040397281] [2023-11-12 00:48:18,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:18,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:48:18,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:18,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:48:18,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:48:18,371 INFO L87 Difference]: Start difference. First operand 508 states and 648 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)