./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire --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 d0e47ba9123028218b420ce8d5a00a95c55595f981ba1193a1a3a9086d3ecf65 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:37:52,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:37:52,513 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:37:52,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:37:52,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:37:52,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:37:52,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:37:52,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:37:52,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:37:52,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:37:52,581 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:37:52,582 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:37:52,582 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:37:52,584 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:37:52,584 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:37:52,585 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:37:52,585 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:37:52,586 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:37:52,587 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:37:52,587 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:37:52,587 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:37:52,588 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:37:52,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:37:52,590 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:37:52,590 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:37:52,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:37:52,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:37:52,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:37:52,592 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:37:52,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:37:52,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:37:52,594 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:37:52,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:37:52,595 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:37:52,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:37:52,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:37:52,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:37:52,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:52,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:37:52,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:37:52,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:37:52,597 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:37:52,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:37:52,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:37:52,598 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:37:52,599 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:37:52,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:37:52,599 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_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0e47ba9123028218b420ce8d5a00a95c55595f981ba1193a1a3a9086d3ecf65 [2023-11-23 20:37:52,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:37:52,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:37:52,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:37:52,886 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:37:52,887 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:37:52,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-11-23 20:37:56,003 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:56,756 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:56,757 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-11-23 20:37:56,844 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/data/cfbf5ea0c/60d62f77154446519ce97504d1561479/FLAG6f2fc8585 [2023-11-23 20:37:56,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/data/cfbf5ea0c/60d62f77154446519ce97504d1561479 [2023-11-23 20:37:56,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:56,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:56,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:56,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:56,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:56,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a4c8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56, skipping insertion in model container [2023-11-23 20:37:56,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:57,238 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:57,980 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32607,32620] [2023-11-23 20:37:58,050 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39665,39678] [2023-11-23 20:37:58,225 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66766,66779] [2023-11-23 20:37:58,268 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[75829,75842] [2023-11-23 20:37:58,297 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82520,82533] [2023-11-23 20:37:58,355 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94424,94437] [2023-11-23 20:37:58,389 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103377,103390] [2023-11-23 20:37:58,426 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111402,111415] [2023-11-23 20:37:58,545 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[149914,149927] [2023-11-23 20:37:58,555 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153444,153457] [2023-11-23 20:37:58,589 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[162451,162464] [2023-11-23 20:37:58,614 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169104,169117] [2023-11-23 20:37:58,675 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[194798,194811] [2023-11-23 20:37:58,752 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[226694,226707] [2023-11-23 20:37:58,821 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[256902,256915] [2023-11-23 20:37:58,901 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[287214,287227] [2023-11-23 20:37:58,986 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[320546,320559] [2023-11-23 20:37:59,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:59,366 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:37:59,499 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32607,32620] [2023-11-23 20:37:59,516 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39665,39678] [2023-11-23 20:37:59,578 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66766,66779] [2023-11-23 20:37:59,600 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[75829,75842] [2023-11-23 20:37:59,616 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82520,82533] [2023-11-23 20:37:59,642 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94424,94437] [2023-11-23 20:37:59,664 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103377,103390] [2023-11-23 20:37:59,682 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111402,111415] [2023-11-23 20:37:59,776 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[149914,149927] [2023-11-23 20:37:59,785 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153444,153457] [2023-11-23 20:37:59,805 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[162451,162464] [2023-11-23 20:37:59,821 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169104,169117] [2023-11-23 20:37:59,873 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[194798,194811] [2023-11-23 20:37:59,983 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[226694,226707] [2023-11-23 20:38:00,045 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[256902,256915] [2023-11-23 20:38:00,108 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[287214,287227] [2023-11-23 20:38:00,177 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_98b17ef0-29a6-425a-abe6-0699f4edec52/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[320546,320559] [2023-11-23 20:38:00,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:38:00,492 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:38:00,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00 WrapperNode [2023-11-23 20:38:00,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:38:00,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:38:00,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:38:00,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:38:00,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:00,599 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,008 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19330 [2023-11-23 20:38:01,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:38:01,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:38:01,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:38:01,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:38:01,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:38:01,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:38:01,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:38:01,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:38:01,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (1/1) ... [2023-11-23 20:38:01,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:38:01,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:38:01,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:38:01,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b17ef0-29a6-425a-abe6-0699f4edec52/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:38:01,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:38:01,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:38:01,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:38:01,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:38:02,507 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:38:02,509 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:38:10,844 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:38:12,303 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:38:12,304 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:38:12,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:38:12 BoogieIcfgContainer [2023-11-23 20:38:12,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:38:12,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:38:12,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:38:12,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:38:12,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:56" (1/3) ... [2023-11-23 20:38:12,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728f2cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:38:12, skipping insertion in model container [2023-11-23 20:38:12,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:00" (2/3) ... [2023-11-23 20:38:12,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728f2cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:38:12, skipping insertion in model container [2023-11-23 20:38:12,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:38:12" (3/3) ... [2023-11-23 20:38:12,319 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-11-23 20:38:12,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:38:12,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-11-23 20:38:12,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:38:12,493 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;@3943e5a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:38:12,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-23 20:38:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 3597 states, 3579 states have (on average 1.7812238055322716) internal successors, (6375), 3596 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 20:38:12,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:12,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:38:12,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-23 20:38:12,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash -354004625, now seen corresponding path program 1 times [2023-11-23 20:38:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:12,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974340497] [2023-11-23 20:38:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:12,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:38:13,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:13,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974340497] [2023-11-23 20:38:13,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974340497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:13,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:13,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:38:13,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479400584] [2023-11-23 20:38:13,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:13,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:38:13,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:13,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:38:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:38:13,487 INFO L87 Difference]: Start difference. First operand has 3597 states, 3579 states have (on average 1.7812238055322716) internal successors, (6375), 3596 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:18,469 INFO L93 Difference]: Finished difference Result 6700 states and 11630 transitions. [2023-11-23 20:38:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:38:18,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-23 20:38:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:18,512 INFO L225 Difference]: With dead ends: 6700 [2023-11-23 20:38:18,512 INFO L226 Difference]: Without dead ends: 4281 [2023-11-23 20:38:18,521 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 [2023-11-23 20:38:18,525 INFO L413 NwaCegarLoop]: 2836 mSDtfsCounter, 19460 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19460 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 3482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:18,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19460 Valid, 4037 Invalid, 3482 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [113 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-23 20:38:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2023-11-23 20:38:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 4256. [2023-11-23 20:38:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4239 states have (on average 1.2774239207360227) internal successors, (5415), 4255 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 5415 transitions. [2023-11-23 20:38:18,772 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 5415 transitions. Word has length 64 [2023-11-23 20:38:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:18,773 INFO L495 AbstractCegarLoop]: Abstraction has 4256 states and 5415 transitions. [2023-11-23 20:38:18,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 5415 transitions. [2023-11-23 20:38:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 20:38:18,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:18,789 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] [2023-11-23 20:38:18,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:38:18,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-23 20:38:18,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:18,791 INFO L85 PathProgramCache]: Analyzing trace with hash 838909937, now seen corresponding path program 1 times [2023-11-23 20:38:18,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:18,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534759871] [2023-11-23 20:38:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:18,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:38:19,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:19,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534759871] [2023-11-23 20:38:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534759871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:19,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:19,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:38:19,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336811222] [2023-11-23 20:38:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:19,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:38:19,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:38:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:38:19,211 INFO L87 Difference]: Start difference. First operand 4256 states and 5415 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:22,351 INFO L93 Difference]: Finished difference Result 7911 states and 10039 transitions. [2023-11-23 20:38:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:38:22,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-23 20:38:22,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:22,382 INFO L225 Difference]: With dead ends: 7911 [2023-11-23 20:38:22,382 INFO L226 Difference]: Without dead ends: 5293 [2023-11-23 20:38:22,390 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 [2023-11-23 20:38:22,391 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 12270 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12270 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:22,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12270 Valid, 2270 Invalid, 2303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 20:38:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2023-11-23 20:38:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 5263. [2023-11-23 20:38:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5246 states have (on average 1.2748760960731986) internal successors, (6688), 5262 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 6688 transitions. [2023-11-23 20:38:22,581 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 6688 transitions. Word has length 65 [2023-11-23 20:38:22,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:22,582 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 6688 transitions. [2023-11-23 20:38:22,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 6688 transitions. [2023-11-23 20:38:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 20:38:22,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:22,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:38:22,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:38:22,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-23 20:38:22,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:22,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1512929807, now seen corresponding path program 1 times [2023-11-23 20:38:22,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:22,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727259270] [2023-11-23 20:38:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:22,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:38:22,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:22,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727259270] [2023-11-23 20:38:22,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727259270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:22,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:22,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:38:22,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159590516] [2023-11-23 20:38:22,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:22,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:38:22,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:38:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:38:22,968 INFO L87 Difference]: Start difference. First operand 5263 states and 6688 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:25,751 INFO L93 Difference]: Finished difference Result 10428 states and 13211 transitions. [2023-11-23 20:38:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:38:25,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-23 20:38:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:25,791 INFO L225 Difference]: With dead ends: 10428 [2023-11-23 20:38:25,791 INFO L226 Difference]: Without dead ends: 6500 [2023-11-23 20:38:25,801 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 [2023-11-23 20:38:25,805 INFO L413 NwaCegarLoop]: 1459 mSDtfsCounter, 10509 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10509 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 2046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:25,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10509 Valid, 2002 Invalid, 2046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 20:38:25,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6500 states. [2023-11-23 20:38:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6500 to 6480. [2023-11-23 20:38:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6480 states, 6463 states have (on average 1.2696889989169116) internal successors, (8206), 6479 states have internal predecessors, (8206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6480 states to 6480 states and 8206 transitions. [2023-11-23 20:38:26,013 INFO L78 Accepts]: Start accepts. Automaton has 6480 states and 8206 transitions. Word has length 65 [2023-11-23 20:38:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:26,015 INFO L495 AbstractCegarLoop]: Abstraction has 6480 states and 8206 transitions. [2023-11-23 20:38:26,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 6480 states and 8206 transitions. [2023-11-23 20:38:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 20:38:26,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:26,030 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] [2023-11-23 20:38:26,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:38:26,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-23 20:38:26,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:26,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1700677701, now seen corresponding path program 1 times [2023-11-23 20:38:26,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:26,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829314249] [2023-11-23 20:38:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:26,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:38:26,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:26,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829314249] [2023-11-23 20:38:26,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829314249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:26,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:26,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:38:26,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107594771] [2023-11-23 20:38:26,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:26,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:38:26,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:26,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:38:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:38:26,338 INFO L87 Difference]: Start difference. First operand 6480 states and 8206 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:28,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:28,154 INFO L93 Difference]: Finished difference Result 12408 states and 15766 transitions. [2023-11-23 20:38:28,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:38:28,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-23 20:38:28,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:28,192 INFO L225 Difference]: With dead ends: 12408 [2023-11-23 20:38:28,192 INFO L226 Difference]: Without dead ends: 8268 [2023-11-23 20:38:28,197 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 [2023-11-23 20:38:28,198 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 8705 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8705 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:28,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8705 Valid, 1726 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 20:38:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2023-11-23 20:38:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 8228. [2023-11-23 20:38:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8228 states, 8211 states have (on average 1.2740226525392766) internal successors, (10461), 8227 states have internal predecessors, (10461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 10461 transitions. [2023-11-23 20:38:28,450 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 10461 transitions. Word has length 66 [2023-11-23 20:38:28,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:28,451 INFO L495 AbstractCegarLoop]: Abstraction has 8228 states and 10461 transitions. [2023-11-23 20:38:28,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:28,452 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 10461 transitions. [2023-11-23 20:38:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 20:38:28,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:28,461 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] [2023-11-23 20:38:28,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:38:28,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-23 20:38:28,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1596749287, now seen corresponding path program 1 times [2023-11-23 20:38:28,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:28,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021998126] [2023-11-23 20:38:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:28,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:38:29,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:29,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021998126] [2023-11-23 20:38:29,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021998126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:29,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:29,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:38:29,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565833019] [2023-11-23 20:38:29,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:29,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:38:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:29,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:38:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:38:29,084 INFO L87 Difference]: Start difference. First operand 8228 states and 10461 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:32,131 INFO L93 Difference]: Finished difference Result 12211 states and 15834 transitions. [2023-11-23 20:38:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 20:38:32,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-23 20:38:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:32,169 INFO L225 Difference]: With dead ends: 12211 [2023-11-23 20:38:32,169 INFO L226 Difference]: Without dead ends: 11085 [2023-11-23 20:38:32,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:38:32,175 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 9300 mSDsluCounter, 3094 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9300 SdHoareTripleChecker+Valid, 4420 SdHoareTripleChecker+Invalid, 4163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:32,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9300 Valid, 4420 Invalid, 4163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4150 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 20:38:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11085 states. [2023-11-23 20:38:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11085 to 8084. [2023-11-23 20:38:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8084 states, 8067 states have (on average 1.2738316598487667) internal successors, (10276), 8083 states have internal predecessors, (10276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8084 states to 8084 states and 10276 transitions. [2023-11-23 20:38:32,393 INFO L78 Accepts]: Start accepts. Automaton has 8084 states and 10276 transitions. Word has length 67 [2023-11-23 20:38:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:32,393 INFO L495 AbstractCegarLoop]: Abstraction has 8084 states and 10276 transitions. [2023-11-23 20:38:32,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8084 states and 10276 transitions. [2023-11-23 20:38:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 20:38:32,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:32,403 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] [2023-11-23 20:38:32,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:38:32,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-23 20:38:32,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:32,408 INFO L85 PathProgramCache]: Analyzing trace with hash -738498771, now seen corresponding path program 1 times [2023-11-23 20:38:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:32,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467683349] [2023-11-23 20:38:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:38:32,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:32,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467683349] [2023-11-23 20:38:32,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467683349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:32,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:32,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 20:38:32,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882759608] [2023-11-23 20:38:32,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:32,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:38:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:38:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:38:32,930 INFO L87 Difference]: Start difference. First operand 8084 states and 10276 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:37,154 INFO L93 Difference]: Finished difference Result 14777 states and 19115 transitions. [2023-11-23 20:38:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 20:38:37,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-23 20:38:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:37,183 INFO L225 Difference]: With dead ends: 14777 [2023-11-23 20:38:37,183 INFO L226 Difference]: Without dead ends: 13761 [2023-11-23 20:38:37,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:38:37,189 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 7466 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 6276 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7466 SdHoareTripleChecker+Valid, 6176 SdHoareTripleChecker+Invalid, 6373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 6276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:37,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7466 Valid, 6176 Invalid, 6373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 6276 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-23 20:38:37,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13761 states. [2023-11-23 20:38:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13761 to 8034. [2023-11-23 20:38:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8034 states, 8017 states have (on average 1.273668454534115) internal successors, (10211), 8033 states have internal predecessors, (10211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8034 states to 8034 states and 10211 transitions. [2023-11-23 20:38:37,540 INFO L78 Accepts]: Start accepts. Automaton has 8034 states and 10211 transitions. Word has length 67 [2023-11-23 20:38:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:37,540 INFO L495 AbstractCegarLoop]: Abstraction has 8034 states and 10211 transitions. [2023-11-23 20:38:37,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:37,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8034 states and 10211 transitions. [2023-11-23 20:38:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 20:38:37,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:37,550 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] [2023-11-23 20:38:37,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 20:38:37,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-23 20:38:37,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash 757912053, now seen corresponding path program 1 times [2023-11-23 20:38:37,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:37,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177171703] [2023-11-23 20:38:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat