./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh --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 52cbb0c1391c9e840599beece58e1ecbc8d18028ef540ea98f759da7158f4609 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:37:26,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:37:26,082 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:37:26,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:37:26,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:37:26,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:37:26,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:37:26,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:37:26,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:37:26,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:37:26,113 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:37:26,114 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:37:26,114 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:37:26,115 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:37:26,115 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:37:26,116 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:37:26,116 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:37:26,117 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:37:26,118 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:37:26,118 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:37:26,119 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:37:26,119 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:37:26,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:37:26,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:37:26,121 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:37:26,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:37:26,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:37:26,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:37:26,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:37:26,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:37:26,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:37:26,124 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:37:26,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:37:26,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:37:26,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:37:26,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:37:26,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:37:26,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:37:26,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:37:26,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:37:26,126 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:37:26,126 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:37:26,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:37:26,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:37:26,127 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:37:26,127 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:37:26,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:37:26,127 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52cbb0c1391c9e840599beece58e1ecbc8d18028ef540ea98f759da7158f4609 [2023-12-02 16:37:26,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:37:26,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:37:26,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:37:26,342 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:37:26,342 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:37:26,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-12-02 16:37:29,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:37:29,515 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:37:29,515 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-12-02 16:37:29,546 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/data/5414bc791/8277bc01e8824925a8d22608360f9cef/FLAGb655e735d [2023-12-02 16:37:29,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/data/5414bc791/8277bc01e8824925a8d22608360f9cef [2023-12-02 16:37:29,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:37:29,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:37:29,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:37:29,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:37:29,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:37:29,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:37:29" (1/1) ... [2023-12-02 16:37:29,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ab5cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:29, skipping insertion in model container [2023-12-02 16:37:29,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:37:29" (1/1) ... [2023-12-02 16:37:29,718 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:37:30,084 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2023-12-02 16:37:30,119 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2023-12-02 16:37:30,131 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2023-12-02 16:37:30,137 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2023-12-02 16:37:30,145 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2023-12-02 16:37:30,150 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2023-12-02 16:37:30,157 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2023-12-02 16:37:30,175 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2023-12-02 16:37:30,181 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2023-12-02 16:37:30,189 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2023-12-02 16:37:30,201 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2023-12-02 16:37:30,222 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2023-12-02 16:37:30,228 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2023-12-02 16:37:30,237 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2023-12-02 16:37:30,246 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2023-12-02 16:37:30,268 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2023-12-02 16:37:30,301 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2023-12-02 16:37:30,307 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2023-12-02 16:37:30,315 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2023-12-02 16:37:30,327 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2023-12-02 16:37:30,344 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2023-12-02 16:37:30,367 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2023-12-02 16:37:30,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:37:30,707 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:37:30,784 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2023-12-02 16:37:30,799 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2023-12-02 16:37:30,805 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2023-12-02 16:37:30,810 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2023-12-02 16:37:30,817 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2023-12-02 16:37:30,822 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2023-12-02 16:37:30,828 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2023-12-02 16:37:30,839 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2023-12-02 16:37:30,844 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2023-12-02 16:37:30,850 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2023-12-02 16:37:30,859 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2023-12-02 16:37:30,876 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2023-12-02 16:37:30,880 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2023-12-02 16:37:30,886 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2023-12-02 16:37:30,895 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2023-12-02 16:37:30,911 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2023-12-02 16:37:30,940 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2023-12-02 16:37:30,944 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2023-12-02 16:37:30,950 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2023-12-02 16:37:30,959 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2023-12-02 16:37:30,973 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2023-12-02 16:37:30,995 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_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2023-12-02 16:37:31,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:37:31,284 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:37:31,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31 WrapperNode [2023-12-02 16:37:31,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:37:31,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:37:31,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:37:31,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:37:31,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,483 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6742 [2023-12-02 16:37:31,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:37:31,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:37:31,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:37:31,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:37:31,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:37:31,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:37:31,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:37:31,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:37:31,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (1/1) ... [2023-12-02 16:37:31,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:37:31,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:37:31,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:37:31,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:37:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:37:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:37:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:37:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:37:31,934 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:37:31,936 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:37:34,805 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:37:34,976 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:37:34,976 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:37:34,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:37:34 BoogieIcfgContainer [2023-12-02 16:37:34,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:37:34,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:37:34,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:37:34,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:37:34,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:37:29" (1/3) ... [2023-12-02 16:37:34,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f22c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:37:34, skipping insertion in model container [2023-12-02 16:37:34,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:37:31" (2/3) ... [2023-12-02 16:37:34,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f22c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:37:34, skipping insertion in model container [2023-12-02 16:37:34,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:37:34" (3/3) ... [2023-12-02 16:37:34,984 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-12-02 16:37:34,999 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:37:34,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-12-02 16:37:35,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:37:35,072 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;@2be12e16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:37:35,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-12-02 16:37:35,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 1088 states, 1064 states have (on average 1.8656015037593985) internal successors, (1985), 1087 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 16:37:35,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:35,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:35,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:35,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash -744865271, now seen corresponding path program 1 times [2023-12-02 16:37:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844032005] [2023-12-02 16:37:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:35,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844032005] [2023-12-02 16:37:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844032005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:35,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:37:35,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482968535] [2023-12-02 16:37:35,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:35,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:37:35,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:35,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:37:35,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:37:35,666 INFO L87 Difference]: Start difference. First operand has 1088 states, 1064 states have (on average 1.8656015037593985) internal successors, (1985), 1087 states have internal predecessors, (1985), 0 states have call successors, (0), 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 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:36,403 INFO L93 Difference]: Finished difference Result 1629 states and 2871 transitions. [2023-12-02 16:37:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:37:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-02 16:37:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:36,424 INFO L225 Difference]: With dead ends: 1629 [2023-12-02 16:37:36,424 INFO L226 Difference]: Without dead ends: 841 [2023-12-02 16:37:36,430 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 [2023-12-02 16:37:36,434 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 4314 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4314 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:36,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4314 Valid, 1014 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:37:36,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-12-02 16:37:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2023-12-02 16:37:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 819 states have (on average 1.2991452991452992) internal successors, (1064), 840 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1064 transitions. [2023-12-02 16:37:36,525 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1064 transitions. Word has length 84 [2023-12-02 16:37:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:36,526 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1064 transitions. [2023-12-02 16:37:36,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1064 transitions. [2023-12-02 16:37:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 16:37:36,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:36,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:36,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:37:36,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:36,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash 861830130, now seen corresponding path program 1 times [2023-12-02 16:37:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:36,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603554876] [2023-12-02 16:37:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:36,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:36,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603554876] [2023-12-02 16:37:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603554876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:36,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:36,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:37:36,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84781095] [2023-12-02 16:37:36,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:36,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:37:36,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:36,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:37:36,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:37:36,732 INFO L87 Difference]: Start difference. First operand 841 states and 1064 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:37,213 INFO L93 Difference]: Finished difference Result 1375 states and 1790 transitions. [2023-12-02 16:37:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:37:37,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-12-02 16:37:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:37,217 INFO L225 Difference]: With dead ends: 1375 [2023-12-02 16:37:37,218 INFO L226 Difference]: Without dead ends: 710 [2023-12-02 16:37:37,219 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 [2023-12-02 16:37:37,220 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 2697 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:37,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 527 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:37:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-12-02 16:37:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2023-12-02 16:37:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 688 states have (on average 1.3313953488372092) internal successors, (916), 709 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 916 transitions. [2023-12-02 16:37:37,240 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 916 transitions. Word has length 85 [2023-12-02 16:37:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:37,241 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 916 transitions. [2023-12-02 16:37:37,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 916 transitions. [2023-12-02 16:37:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 16:37:37,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:37,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:37,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:37:37,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:37,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:37,245 INFO L85 PathProgramCache]: Analyzing trace with hash 139657888, now seen corresponding path program 1 times [2023-12-02 16:37:37,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:37,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781764076] [2023-12-02 16:37:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:37,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:37,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:37,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781764076] [2023-12-02 16:37:37,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781764076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:37,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:37,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:37:37,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137686375] [2023-12-02 16:37:37,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:37,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:37:37,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:37,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:37:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:37:37,477 INFO L87 Difference]: Start difference. First operand 710 states and 916 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:38,053 INFO L93 Difference]: Finished difference Result 1244 states and 1641 transitions. [2023-12-02 16:37:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:37:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 16:37:38,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:38,057 INFO L225 Difference]: With dead ends: 1244 [2023-12-02 16:37:38,058 INFO L226 Difference]: Without dead ends: 670 [2023-12-02 16:37:38,059 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 [2023-12-02 16:37:38,060 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2467 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:38,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2467 Valid, 432 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:37:38,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-12-02 16:37:38,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2023-12-02 16:37:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 648 states have (on average 1.337962962962963) internal successors, (867), 669 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 867 transitions. [2023-12-02 16:37:38,077 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 867 transitions. Word has length 86 [2023-12-02 16:37:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:38,077 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 867 transitions. [2023-12-02 16:37:38,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 867 transitions. [2023-12-02 16:37:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 16:37:38,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:38,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:38,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:37:38,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:38,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1409043309, now seen corresponding path program 1 times [2023-12-02 16:37:38,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:38,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840586139] [2023-12-02 16:37:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:38,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:38,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840586139] [2023-12-02 16:37:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840586139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:38,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:38,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:37:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213846246] [2023-12-02 16:37:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:38,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:37:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:37:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:37:38,245 INFO L87 Difference]: Start difference. First operand 670 states and 867 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:38,703 INFO L93 Difference]: Finished difference Result 1204 states and 1591 transitions. [2023-12-02 16:37:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:37:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-02 16:37:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:38,707 INFO L225 Difference]: With dead ends: 1204 [2023-12-02 16:37:38,707 INFO L226 Difference]: Without dead ends: 632 [2023-12-02 16:37:38,708 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 [2023-12-02 16:37:38,709 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 2382 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:38,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2382 Valid, 464 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:37:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-02 16:37:38,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2023-12-02 16:37:38,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 610 states have (on average 1.3508196721311476) internal successors, (824), 631 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 824 transitions. [2023-12-02 16:37:38,725 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 824 transitions. Word has length 87 [2023-12-02 16:37:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:38,726 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 824 transitions. [2023-12-02 16:37:38,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 824 transitions. [2023-12-02 16:37:38,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 16:37:38,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:38,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:38,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:37:38,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:38,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:38,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1145590041, now seen corresponding path program 1 times [2023-12-02 16:37:38,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:38,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273873625] [2023-12-02 16:37:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:38,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:38,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:38,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273873625] [2023-12-02 16:37:38,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273873625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:38,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:38,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:37:38,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691803409] [2023-12-02 16:37:38,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:38,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:37:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:37:38,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:37:38,872 INFO L87 Difference]: Start difference. First operand 632 states and 824 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:39,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:39,275 INFO L93 Difference]: Finished difference Result 1166 states and 1547 transitions. [2023-12-02 16:37:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:37:39,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 16:37:39,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:39,279 INFO L225 Difference]: With dead ends: 1166 [2023-12-02 16:37:39,279 INFO L226 Difference]: Without dead ends: 607 [2023-12-02 16:37:39,280 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 [2023-12-02 16:37:39,281 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2325 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:39,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 451 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:37:39,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-12-02 16:37:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2023-12-02 16:37:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3606837606837607) internal successors, (796), 606 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 796 transitions. [2023-12-02 16:37:39,296 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 796 transitions. Word has length 88 [2023-12-02 16:37:39,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:39,297 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 796 transitions. [2023-12-02 16:37:39,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 796 transitions. [2023-12-02 16:37:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 16:37:39,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:39,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:39,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:37:39,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:39,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:39,300 INFO L85 PathProgramCache]: Analyzing trace with hash -81085098, now seen corresponding path program 1 times [2023-12-02 16:37:39,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:39,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017632740] [2023-12-02 16:37:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:39,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:39,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:39,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017632740] [2023-12-02 16:37:39,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017632740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:39,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:39,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:37:39,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264180036] [2023-12-02 16:37:39,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:39,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:37:39,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:37:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:37:39,453 INFO L87 Difference]: Start difference. First operand 607 states and 796 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:39,887 INFO L93 Difference]: Finished difference Result 1141 states and 1518 transitions. [2023-12-02 16:37:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:37:39,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-02 16:37:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:39,891 INFO L225 Difference]: With dead ends: 1141 [2023-12-02 16:37:39,891 INFO L226 Difference]: Without dead ends: 599 [2023-12-02 16:37:39,892 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 [2023-12-02 16:37:39,893 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 2248 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:39,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 427 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:37:39,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-12-02 16:37:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2023-12-02 16:37:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3622183708838822) internal successors, (786), 598 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 786 transitions. [2023-12-02 16:37:39,907 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 786 transitions. Word has length 89 [2023-12-02 16:37:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:39,907 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 786 transitions. [2023-12-02 16:37:39,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 786 transitions. [2023-12-02 16:37:39,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 16:37:39,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:39,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:39,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 16:37:39,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:39,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1177000506, now seen corresponding path program 1 times [2023-12-02 16:37:39,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:39,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251273541] [2023-12-02 16:37:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:39,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:40,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:40,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251273541] [2023-12-02 16:37:40,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251273541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:40,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:40,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:37:40,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625736284] [2023-12-02 16:37:40,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:40,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:37:40,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:37:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:37:40,258 INFO L87 Difference]: Start difference. First operand 599 states and 786 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:41,017 INFO L93 Difference]: Finished difference Result 1105 states and 1397 transitions. [2023-12-02 16:37:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:37:41,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-02 16:37:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:41,022 INFO L225 Difference]: With dead ends: 1105 [2023-12-02 16:37:41,022 INFO L226 Difference]: Without dead ends: 787 [2023-12-02 16:37:41,023 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 [2023-12-02 16:37:41,024 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 2519 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2519 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:41,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2519 Valid, 938 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:37:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-02 16:37:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 599. [2023-12-02 16:37:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3604852686308493) internal successors, (785), 598 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:41,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 785 transitions. [2023-12-02 16:37:41,040 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 785 transitions. Word has length 90 [2023-12-02 16:37:41,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:41,040 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 785 transitions. [2023-12-02 16:37:41,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 785 transitions. [2023-12-02 16:37:41,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 16:37:41,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:41,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:41,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 16:37:41,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:41,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1435926047, now seen corresponding path program 1 times [2023-12-02 16:37:41,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:41,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793860298] [2023-12-02 16:37:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:41,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:41,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:41,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793860298] [2023-12-02 16:37:41,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793860298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:41,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:41,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:41,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760936895] [2023-12-02 16:37:41,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:41,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:41,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:41,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:41,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:41,428 INFO L87 Difference]: Start difference. First operand 599 states and 785 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:42,583 INFO L93 Difference]: Finished difference Result 1177 states and 1548 transitions. [2023-12-02 16:37:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:37:42,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-02 16:37:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:42,590 INFO L225 Difference]: With dead ends: 1177 [2023-12-02 16:37:42,590 INFO L226 Difference]: Without dead ends: 1016 [2023-12-02 16:37:42,591 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 [2023-12-02 16:37:42,592 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 2898 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2898 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:42,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2898 Valid, 2880 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:37:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-02 16:37:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 599. [2023-12-02 16:37:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3587521663778164) internal successors, (784), 598 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 784 transitions. [2023-12-02 16:37:42,609 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 784 transitions. Word has length 90 [2023-12-02 16:37:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:42,609 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 784 transitions. [2023-12-02 16:37:42,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 784 transitions. [2023-12-02 16:37:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 16:37:42,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:42,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:42,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 16:37:42,612 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:42,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1452291629, now seen corresponding path program 1 times [2023-12-02 16:37:42,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030867961] [2023-12-02 16:37:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:43,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030867961] [2023-12-02 16:37:43,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030867961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:43,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:43,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445236949] [2023-12-02 16:37:43,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:43,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:43,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:43,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:43,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:43,031 INFO L87 Difference]: Start difference. First operand 599 states and 784 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:44,376 INFO L93 Difference]: Finished difference Result 1104 states and 1451 transitions. [2023-12-02 16:37:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:37:44,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-02 16:37:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:44,381 INFO L225 Difference]: With dead ends: 1104 [2023-12-02 16:37:44,381 INFO L226 Difference]: Without dead ends: 1008 [2023-12-02 16:37:44,381 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 [2023-12-02 16:37:44,382 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 2642 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:44,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 2940 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:37:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-02 16:37:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 599. [2023-12-02 16:37:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3570190641247835) internal successors, (783), 598 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 783 transitions. [2023-12-02 16:37:44,396 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 783 transitions. Word has length 90 [2023-12-02 16:37:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:44,396 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 783 transitions. [2023-12-02 16:37:44,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 783 transitions. [2023-12-02 16:37:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 16:37:44,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:44,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:44,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:37:44,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:44,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash 280311879, now seen corresponding path program 1 times [2023-12-02 16:37:44,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:44,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58000366] [2023-12-02 16:37:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:44,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:44,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:44,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58000366] [2023-12-02 16:37:44,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58000366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:44,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:44,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:44,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657161528] [2023-12-02 16:37:44,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:44,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:44,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:44,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:44,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:44,656 INFO L87 Difference]: Start difference. First operand 599 states and 783 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:45,826 INFO L93 Difference]: Finished difference Result 1211 states and 1580 transitions. [2023-12-02 16:37:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:37:45,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 16:37:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:45,830 INFO L225 Difference]: With dead ends: 1211 [2023-12-02 16:37:45,830 INFO L226 Difference]: Without dead ends: 1016 [2023-12-02 16:37:45,831 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 [2023-12-02 16:37:45,831 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 2058 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:45,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 2540 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:37:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-02 16:37:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 599. [2023-12-02 16:37:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3552859618717505) internal successors, (782), 598 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 782 transitions. [2023-12-02 16:37:45,845 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 782 transitions. Word has length 92 [2023-12-02 16:37:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:45,846 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 782 transitions. [2023-12-02 16:37:45,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 782 transitions. [2023-12-02 16:37:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 16:37:45,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:45,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:45,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 16:37:45,848 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:45,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash 347470600, now seen corresponding path program 1 times [2023-12-02 16:37:45,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:45,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691337991] [2023-12-02 16:37:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:45,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:46,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:46,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691337991] [2023-12-02 16:37:46,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691337991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:46,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:46,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:46,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463190437] [2023-12-02 16:37:46,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:46,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:46,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:46,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:46,227 INFO L87 Difference]: Start difference. First operand 599 states and 782 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:47,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:47,377 INFO L93 Difference]: Finished difference Result 1076 states and 1402 transitions. [2023-12-02 16:37:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:37:47,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 16:37:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:47,383 INFO L225 Difference]: With dead ends: 1076 [2023-12-02 16:37:47,383 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 16:37:47,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:37:47,384 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 2553 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2553 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:47,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2553 Valid, 2704 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:37:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 16:37:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2023-12-02 16:37:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3535528596187174) internal successors, (781), 598 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 781 transitions. [2023-12-02 16:37:47,394 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 781 transitions. Word has length 92 [2023-12-02 16:37:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:47,394 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 781 transitions. [2023-12-02 16:37:47,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 781 transitions. [2023-12-02 16:37:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 16:37:47,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:47,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:47,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 16:37:47,397 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:47,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:47,397 INFO L85 PathProgramCache]: Analyzing trace with hash -950419438, now seen corresponding path program 1 times [2023-12-02 16:37:47,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:47,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638974955] [2023-12-02 16:37:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:47,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:47,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:47,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638974955] [2023-12-02 16:37:47,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638974955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:47,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:47,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:47,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669515915] [2023-12-02 16:37:47,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:47,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:47,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:47,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:47,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:47,682 INFO L87 Difference]: Start difference. First operand 599 states and 781 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:48,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:48,940 INFO L93 Difference]: Finished difference Result 1119 states and 1460 transitions. [2023-12-02 16:37:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:37:48,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 16:37:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:48,945 INFO L225 Difference]: With dead ends: 1119 [2023-12-02 16:37:48,945 INFO L226 Difference]: Without dead ends: 1008 [2023-12-02 16:37:48,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:37:48,946 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 2612 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:48,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2612 Valid, 3520 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2617 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:37:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-02 16:37:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 599. [2023-12-02 16:37:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3518197573656845) internal successors, (780), 598 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 780 transitions. [2023-12-02 16:37:48,956 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 780 transitions. Word has length 92 [2023-12-02 16:37:48,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:48,956 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 780 transitions. [2023-12-02 16:37:48,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 780 transitions. [2023-12-02 16:37:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 16:37:48,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:48,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:48,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 16:37:48,959 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:48,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:48,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1340210149, now seen corresponding path program 1 times [2023-12-02 16:37:48,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:48,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893946487] [2023-12-02 16:37:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:48,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:49,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:49,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893946487] [2023-12-02 16:37:49,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893946487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:49,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:49,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:49,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026319942] [2023-12-02 16:37:49,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:49,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:49,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:49,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:49,309 INFO L87 Difference]: Start difference. First operand 599 states and 780 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:50,503 INFO L93 Difference]: Finished difference Result 1076 states and 1401 transitions. [2023-12-02 16:37:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:37:50,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 16:37:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:50,508 INFO L225 Difference]: With dead ends: 1076 [2023-12-02 16:37:50,508 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 16:37:50,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:37:50,509 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 2539 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:50,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2539 Valid, 2920 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:37:50,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 16:37:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2023-12-02 16:37:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3500866551126516) internal successors, (779), 598 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 779 transitions. [2023-12-02 16:37:50,519 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 779 transitions. Word has length 92 [2023-12-02 16:37:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:50,519 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 779 transitions. [2023-12-02 16:37:50,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 779 transitions. [2023-12-02 16:37:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 16:37:50,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:50,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:50,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 16:37:50,521 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:50,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2065712337, now seen corresponding path program 1 times [2023-12-02 16:37:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624120595] [2023-12-02 16:37:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:50,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:50,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624120595] [2023-12-02 16:37:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624120595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:50,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:50,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253630601] [2023-12-02 16:37:50,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:50,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:50,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:50,744 INFO L87 Difference]: Start difference. First operand 599 states and 779 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:51,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:51,915 INFO L93 Difference]: Finished difference Result 1119 states and 1460 transitions. [2023-12-02 16:37:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:37:51,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 16:37:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:51,919 INFO L225 Difference]: With dead ends: 1119 [2023-12-02 16:37:51,919 INFO L226 Difference]: Without dead ends: 1008 [2023-12-02 16:37:51,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:37:51,920 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 2666 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:51,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 2749 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:37:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-02 16:37:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 599. [2023-12-02 16:37:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3483535528596187) internal successors, (778), 598 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 778 transitions. [2023-12-02 16:37:51,929 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 778 transitions. Word has length 92 [2023-12-02 16:37:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:51,929 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 778 transitions. [2023-12-02 16:37:51,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 778 transitions. [2023-12-02 16:37:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 16:37:51,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:51,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:51,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 16:37:51,931 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:51,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:51,931 INFO L85 PathProgramCache]: Analyzing trace with hash -98755353, now seen corresponding path program 1 times [2023-12-02 16:37:51,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:51,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322792224] [2023-12-02 16:37:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:51,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:52,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:52,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322792224] [2023-12-02 16:37:52,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322792224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:52,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:52,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:52,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631863392] [2023-12-02 16:37:52,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:52,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:52,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:52,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:52,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:52,212 INFO L87 Difference]: Start difference. First operand 599 states and 778 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:53,483 INFO L93 Difference]: Finished difference Result 1070 states and 1393 transitions. [2023-12-02 16:37:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:37:53,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 16:37:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:53,486 INFO L225 Difference]: With dead ends: 1070 [2023-12-02 16:37:53,486 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 16:37:53,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:37:53,487 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 2554 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2554 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:53,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2554 Valid, 3128 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:37:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 16:37:53,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2023-12-02 16:37:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3466204506065858) internal successors, (777), 598 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 777 transitions. [2023-12-02 16:37:53,499 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 777 transitions. Word has length 92 [2023-12-02 16:37:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:53,500 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 777 transitions. [2023-12-02 16:37:53,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 777 transitions. [2023-12-02 16:37:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 16:37:53,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:53,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:53,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 16:37:53,502 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:53,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1715587412, now seen corresponding path program 1 times [2023-12-02 16:37:53,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:53,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971355938] [2023-12-02 16:37:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:53,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:54,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971355938] [2023-12-02 16:37:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971355938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:54,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:54,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 16:37:54,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161555455] [2023-12-02 16:37:54,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:54,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:37:54,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:54,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:37:54,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:37:54,121 INFO L87 Difference]: Start difference. First operand 599 states and 777 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:56,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:56,335 INFO L93 Difference]: Finished difference Result 1391 states and 1816 transitions. [2023-12-02 16:37:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 16:37:56,336 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 16:37:56,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:56,340 INFO L225 Difference]: With dead ends: 1391 [2023-12-02 16:37:56,340 INFO L226 Difference]: Without dead ends: 1319 [2023-12-02 16:37:56,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-12-02 16:37:56,341 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 5115 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 3475 SdHoareTripleChecker+Invalid, 3482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:56,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5115 Valid, 3475 Invalid, 3482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 16:37:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-12-02 16:37:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 603. [2023-12-02 16:37:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3442340791738383) internal successors, (781), 602 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 781 transitions. [2023-12-02 16:37:56,356 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 781 transitions. Word has length 92 [2023-12-02 16:37:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:56,356 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 781 transitions. [2023-12-02 16:37:56,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 781 transitions. [2023-12-02 16:37:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 16:37:56,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:56,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:56,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 16:37:56,359 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:56,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash 343046810, now seen corresponding path program 1 times [2023-12-02 16:37:56,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:56,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881715519] [2023-12-02 16:37:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:56,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:56,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:56,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881715519] [2023-12-02 16:37:56,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881715519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:56,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:56,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:56,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668905988] [2023-12-02 16:37:56,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:56,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:56,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:56,663 INFO L87 Difference]: Start difference. First operand 603 states and 781 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:57,827 INFO L93 Difference]: Finished difference Result 1076 states and 1396 transitions. [2023-12-02 16:37:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:37:57,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-02 16:37:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:57,832 INFO L225 Difference]: With dead ends: 1076 [2023-12-02 16:37:57,832 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 16:37:57,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:37:57,833 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1888 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:57,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 2528 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:37:57,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 16:37:57,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2023-12-02 16:37:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3448873483535528) internal successors, (776), 598 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 776 transitions. [2023-12-02 16:37:57,845 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 776 transitions. Word has length 93 [2023-12-02 16:37:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:57,846 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 776 transitions. [2023-12-02 16:37:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 776 transitions. [2023-12-02 16:37:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:37:57,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:57,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:57,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 16:37:57,847 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:57,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:57,848 INFO L85 PathProgramCache]: Analyzing trace with hash 514536132, now seen corresponding path program 1 times [2023-12-02 16:37:57,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:57,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731412131] [2023-12-02 16:37:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:57,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:58,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:58,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731412131] [2023-12-02 16:37:58,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731412131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:58,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:58,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:58,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883453345] [2023-12-02 16:37:58,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:58,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:58,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:58,110 INFO L87 Difference]: Start difference. First operand 599 states and 776 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:59,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:59,356 INFO L93 Difference]: Finished difference Result 1085 states and 1404 transitions. [2023-12-02 16:37:59,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:37:59,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:37:59,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:59,360 INFO L225 Difference]: With dead ends: 1085 [2023-12-02 16:37:59,360 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 16:37:59,360 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 [2023-12-02 16:37:59,361 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 2687 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:59,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 3014 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:37:59,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 16:37:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2023-12-02 16:37:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.34315424610052) internal successors, (775), 598 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 775 transitions. [2023-12-02 16:37:59,369 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 775 transitions. Word has length 94 [2023-12-02 16:37:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:59,369 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 775 transitions. [2023-12-02 16:37:59,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:59,370 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 775 transitions. [2023-12-02 16:37:59,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:37:59,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:59,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:37:59,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 16:37:59,371 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:37:59,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:59,371 INFO L85 PathProgramCache]: Analyzing trace with hash 105690904, now seen corresponding path program 1 times [2023-12-02 16:37:59,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:59,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21162552] [2023-12-02 16:37:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:59,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:59,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21162552] [2023-12-02 16:37:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21162552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:59,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:59,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:37:59,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283849173] [2023-12-02 16:37:59,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:59,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:59,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:59,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:59,614 INFO L87 Difference]: Start difference. First operand 599 states and 775 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:00,738 INFO L93 Difference]: Finished difference Result 1047 states and 1349 transitions. [2023-12-02 16:38:00,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:00,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:00,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:00,742 INFO L225 Difference]: With dead ends: 1047 [2023-12-02 16:38:00,742 INFO L226 Difference]: Without dead ends: 988 [2023-12-02 16:38:00,743 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 [2023-12-02 16:38:00,743 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1791 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:00,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 2882 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:38:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2023-12-02 16:38:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 599. [2023-12-02 16:38:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.341421143847487) internal successors, (774), 598 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 774 transitions. [2023-12-02 16:38:00,751 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 774 transitions. Word has length 94 [2023-12-02 16:38:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:00,751 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 774 transitions. [2023-12-02 16:38:00,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 774 transitions. [2023-12-02 16:38:00,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:00,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:00,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:00,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 16:38:00,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:00,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 909968804, now seen corresponding path program 1 times [2023-12-02 16:38:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:00,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109012089] [2023-12-02 16:38:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:01,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109012089] [2023-12-02 16:38:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109012089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:01,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:01,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453234745] [2023-12-02 16:38:01,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:01,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:01,050 INFO L87 Difference]: Start difference. First operand 599 states and 774 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:02,204 INFO L93 Difference]: Finished difference Result 1134 states and 1465 transitions. [2023-12-02 16:38:02,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:02,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:02,209 INFO L225 Difference]: With dead ends: 1134 [2023-12-02 16:38:02,209 INFO L226 Difference]: Without dead ends: 1008 [2023-12-02 16:38:02,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:02,210 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 2655 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:02,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2655 Valid, 2706 Invalid, 2242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:38:02,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-02 16:38:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 599. [2023-12-02 16:38:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.339688041594454) internal successors, (773), 598 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 773 transitions. [2023-12-02 16:38:02,220 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 773 transitions. Word has length 94 [2023-12-02 16:38:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:02,220 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 773 transitions. [2023-12-02 16:38:02,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 773 transitions. [2023-12-02 16:38:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:02,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:02,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:02,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 16:38:02,221 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:02,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:02,222 INFO L85 PathProgramCache]: Analyzing trace with hash 556568795, now seen corresponding path program 1 times [2023-12-02 16:38:02,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:02,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745809878] [2023-12-02 16:38:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:02,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:02,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:02,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745809878] [2023-12-02 16:38:02,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745809878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:02,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:02,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:02,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218716337] [2023-12-02 16:38:02,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:02,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:02,447 INFO L87 Difference]: Start difference. First operand 599 states and 773 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:03,628 INFO L93 Difference]: Finished difference Result 1043 states and 1343 transitions. [2023-12-02 16:38:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:03,633 INFO L225 Difference]: With dead ends: 1043 [2023-12-02 16:38:03,633 INFO L226 Difference]: Without dead ends: 988 [2023-12-02 16:38:03,634 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 [2023-12-02 16:38:03,634 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 1780 mSDsluCounter, 2290 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:03,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 2949 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:38:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2023-12-02 16:38:03,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 599. [2023-12-02 16:38:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3379549393414212) internal successors, (772), 598 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 772 transitions. [2023-12-02 16:38:03,645 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 772 transitions. Word has length 94 [2023-12-02 16:38:03,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:03,645 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 772 transitions. [2023-12-02 16:38:03,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:03,646 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 772 transitions. [2023-12-02 16:38:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:03,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:03,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:03,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 16:38:03,647 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:03,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:03,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1887678960, now seen corresponding path program 1 times [2023-12-02 16:38:03,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:03,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514143903] [2023-12-02 16:38:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:03,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:03,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:03,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514143903] [2023-12-02 16:38:03,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514143903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:03,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:03,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:03,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099493162] [2023-12-02 16:38:03,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:03,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:03,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:03,949 INFO L87 Difference]: Start difference. First operand 599 states and 772 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:04,986 INFO L93 Difference]: Finished difference Result 1047 states and 1345 transitions. [2023-12-02 16:38:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:04,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:04,991 INFO L225 Difference]: With dead ends: 1047 [2023-12-02 16:38:04,991 INFO L226 Difference]: Without dead ends: 988 [2023-12-02 16:38:04,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:04,992 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 2445 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:04,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2445 Valid, 2488 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:04,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2023-12-02 16:38:05,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 599. [2023-12-02 16:38:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3362218370883883) internal successors, (771), 598 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 771 transitions. [2023-12-02 16:38:05,003 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 771 transitions. Word has length 94 [2023-12-02 16:38:05,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:05,004 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 771 transitions. [2023-12-02 16:38:05,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 771 transitions. [2023-12-02 16:38:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:05,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:05,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:05,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 16:38:05,006 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:05,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:05,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2039186161, now seen corresponding path program 1 times [2023-12-02 16:38:05,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:05,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374371994] [2023-12-02 16:38:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:05,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:05,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:05,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374371994] [2023-12-02 16:38:05,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374371994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:05,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:05,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:05,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734708818] [2023-12-02 16:38:05,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:05,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:05,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:05,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:05,299 INFO L87 Difference]: Start difference. First operand 599 states and 771 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:06,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:06,287 INFO L93 Difference]: Finished difference Result 1047 states and 1343 transitions. [2023-12-02 16:38:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:06,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:06,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:06,291 INFO L225 Difference]: With dead ends: 1047 [2023-12-02 16:38:06,291 INFO L226 Difference]: Without dead ends: 988 [2023-12-02 16:38:06,291 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 [2023-12-02 16:38:06,292 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 2487 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:06,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 2457 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2023-12-02 16:38:06,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 599. [2023-12-02 16:38:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3344887348353554) internal successors, (770), 598 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 770 transitions. [2023-12-02 16:38:06,300 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 770 transitions. Word has length 94 [2023-12-02 16:38:06,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:06,300 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 770 transitions. [2023-12-02 16:38:06,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:06,300 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 770 transitions. [2023-12-02 16:38:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:06,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:06,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:06,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-02 16:38:06,301 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:06,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:06,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1846935907, now seen corresponding path program 1 times [2023-12-02 16:38:06,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:06,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861655271] [2023-12-02 16:38:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:06,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:06,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:06,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861655271] [2023-12-02 16:38:06,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861655271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:06,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:06,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:06,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225431506] [2023-12-02 16:38:06,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:06,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:06,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:06,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:06,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:06,489 INFO L87 Difference]: Start difference. First operand 599 states and 770 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:07,434 INFO L93 Difference]: Finished difference Result 961 states and 1215 transitions. [2023-12-02 16:38:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:07,437 INFO L225 Difference]: With dead ends: 961 [2023-12-02 16:38:07,437 INFO L226 Difference]: Without dead ends: 956 [2023-12-02 16:38:07,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:07,438 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3117 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3117 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:07,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3117 Valid, 1954 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:38:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-12-02 16:38:07,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 599. [2023-12-02 16:38:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3327556325823224) internal successors, (769), 598 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 769 transitions. [2023-12-02 16:38:07,447 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 769 transitions. Word has length 94 [2023-12-02 16:38:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:07,447 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 769 transitions. [2023-12-02 16:38:07,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 769 transitions. [2023-12-02 16:38:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:07,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:07,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:07,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 16:38:07,448 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:07,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash 65261195, now seen corresponding path program 1 times [2023-12-02 16:38:07,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:07,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682604858] [2023-12-02 16:38:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:07,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:07,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682604858] [2023-12-02 16:38:07,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682604858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:07,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:07,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 16:38:07,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466029502] [2023-12-02 16:38:07,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:07,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:38:07,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:38:07,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:38:07,817 INFO L87 Difference]: Start difference. First operand 599 states and 769 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:09,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:09,870 INFO L93 Difference]: Finished difference Result 1408 states and 1816 transitions. [2023-12-02 16:38:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 16:38:09,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:09,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:09,877 INFO L225 Difference]: With dead ends: 1408 [2023-12-02 16:38:09,877 INFO L226 Difference]: Without dead ends: 1327 [2023-12-02 16:38:09,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-12-02 16:38:09,878 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 4737 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 3781 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:09,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4737 Valid, 3781 Invalid, 3572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:38:09,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2023-12-02 16:38:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 603. [2023-12-02 16:38:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3304647160068848) internal successors, (773), 602 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 773 transitions. [2023-12-02 16:38:09,891 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 773 transitions. Word has length 94 [2023-12-02 16:38:09,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:09,891 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 773 transitions. [2023-12-02 16:38:09,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:09,891 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 773 transitions. [2023-12-02 16:38:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:09,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:09,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:09,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-02 16:38:09,893 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:09,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash -251225405, now seen corresponding path program 1 times [2023-12-02 16:38:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:09,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783131771] [2023-12-02 16:38:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:09,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:10,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:10,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783131771] [2023-12-02 16:38:10,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783131771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:10,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:10,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:10,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983371403] [2023-12-02 16:38:10,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:10,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:10,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:10,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:10,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:10,166 INFO L87 Difference]: Start difference. First operand 603 states and 773 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:11,282 INFO L93 Difference]: Finished difference Result 1051 states and 1345 transitions. [2023-12-02 16:38:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:11,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:11,288 INFO L225 Difference]: With dead ends: 1051 [2023-12-02 16:38:11,288 INFO L226 Difference]: Without dead ends: 992 [2023-12-02 16:38:11,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:11,289 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 1732 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:11,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 2663 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:38:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-12-02 16:38:11,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-12-02 16:38:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3287435456110155) internal successors, (772), 602 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 772 transitions. [2023-12-02 16:38:11,297 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 772 transitions. Word has length 94 [2023-12-02 16:38:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:11,297 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 772 transitions. [2023-12-02 16:38:11,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 772 transitions. [2023-12-02 16:38:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:11,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:11,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:11,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-02 16:38:11,298 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:11,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2102424565, now seen corresponding path program 1 times [2023-12-02 16:38:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:11,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290224545] [2023-12-02 16:38:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:11,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:11,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:11,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290224545] [2023-12-02 16:38:11,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290224545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:11,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:11,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832357737] [2023-12-02 16:38:11,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:11,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:11,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:11,496 INFO L87 Difference]: Start difference. First operand 603 states and 772 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:12,558 INFO L93 Difference]: Finished difference Result 1047 states and 1339 transitions. [2023-12-02 16:38:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:12,563 INFO L225 Difference]: With dead ends: 1047 [2023-12-02 16:38:12,563 INFO L226 Difference]: Without dead ends: 992 [2023-12-02 16:38:12,563 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 [2023-12-02 16:38:12,564 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1764 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:12,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 2661 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2083 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-12-02 16:38:12,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-12-02 16:38:12,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3270223752151462) internal successors, (771), 602 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 771 transitions. [2023-12-02 16:38:12,574 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 771 transitions. Word has length 94 [2023-12-02 16:38:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:12,574 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 771 transitions. [2023-12-02 16:38:12,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 771 transitions. [2023-12-02 16:38:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:12,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:12,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:12,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-02 16:38:12,575 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:12,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:12,576 INFO L85 PathProgramCache]: Analyzing trace with hash -210482352, now seen corresponding path program 1 times [2023-12-02 16:38:12,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:12,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743843141] [2023-12-02 16:38:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:12,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:12,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:12,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743843141] [2023-12-02 16:38:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743843141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:12,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155055745] [2023-12-02 16:38:12,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:12,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:12,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:12,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:12,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:12,764 INFO L87 Difference]: Start difference. First operand 603 states and 771 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:13,768 INFO L93 Difference]: Finished difference Result 1012 states and 1279 transitions. [2023-12-02 16:38:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:13,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:13,773 INFO L225 Difference]: With dead ends: 1012 [2023-12-02 16:38:13,773 INFO L226 Difference]: Without dead ends: 960 [2023-12-02 16:38:13,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:13,774 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 3053 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3053 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:13,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3053 Valid, 2013 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:38:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-12-02 16:38:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 603. [2023-12-02 16:38:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3253012048192772) internal successors, (770), 602 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 770 transitions. [2023-12-02 16:38:13,792 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 770 transitions. Word has length 94 [2023-12-02 16:38:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:13,792 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 770 transitions. [2023-12-02 16:38:13,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 770 transitions. [2023-12-02 16:38:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:13,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:13,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:13,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-02 16:38:13,794 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:13,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:13,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1701714750, now seen corresponding path program 1 times [2023-12-02 16:38:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213275907] [2023-12-02 16:38:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:13,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:14,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213275907] [2023-12-02 16:38:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213275907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:14,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:14,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 16:38:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907402665] [2023-12-02 16:38:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:14,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:38:14,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:38:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:38:14,128 INFO L87 Difference]: Start difference. First operand 603 states and 770 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:16,069 INFO L93 Difference]: Finished difference Result 1409 states and 1816 transitions. [2023-12-02 16:38:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 16:38:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:16,075 INFO L225 Difference]: With dead ends: 1409 [2023-12-02 16:38:16,075 INFO L226 Difference]: Without dead ends: 1328 [2023-12-02 16:38:16,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-12-02 16:38:16,077 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 5279 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5279 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:16,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5279 Valid, 3541 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 16:38:16,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2023-12-02 16:38:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 607. [2023-12-02 16:38:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.323076923076923) internal successors, (774), 606 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 774 transitions. [2023-12-02 16:38:16,087 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 774 transitions. Word has length 94 [2023-12-02 16:38:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:16,087 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 774 transitions. [2023-12-02 16:38:16,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 774 transitions. [2023-12-02 16:38:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:16,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:16,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:16,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-02 16:38:16,089 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:16,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:16,089 INFO L85 PathProgramCache]: Analyzing trace with hash -619327580, now seen corresponding path program 1 times [2023-12-02 16:38:16,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:16,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946957857] [2023-12-02 16:38:16,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:16,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:16,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:16,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946957857] [2023-12-02 16:38:16,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946957857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:16,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:16,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:16,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676848716] [2023-12-02 16:38:16,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:16,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:16,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:16,280 INFO L87 Difference]: Start difference. First operand 607 states and 774 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:17,330 INFO L93 Difference]: Finished difference Result 1055 states and 1344 transitions. [2023-12-02 16:38:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:17,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:17,334 INFO L225 Difference]: With dead ends: 1055 [2023-12-02 16:38:17,334 INFO L226 Difference]: Without dead ends: 996 [2023-12-02 16:38:17,334 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 [2023-12-02 16:38:17,335 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 2474 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:17,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 2470 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:17,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-12-02 16:38:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2023-12-02 16:38:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3213675213675213) internal successors, (773), 606 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 773 transitions. [2023-12-02 16:38:17,346 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 773 transitions. Word has length 94 [2023-12-02 16:38:17,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:17,346 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 773 transitions. [2023-12-02 16:38:17,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 773 transitions. [2023-12-02 16:38:17,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:17,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:17,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:17,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-02 16:38:17,347 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:17,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1893494246, now seen corresponding path program 1 times [2023-12-02 16:38:17,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:17,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22897489] [2023-12-02 16:38:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:17,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:17,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:17,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22897489] [2023-12-02 16:38:17,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22897489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:17,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:17,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:17,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069833846] [2023-12-02 16:38:17,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:17,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:17,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:17,568 INFO L87 Difference]: Start difference. First operand 607 states and 773 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:18,620 INFO L93 Difference]: Finished difference Result 1051 states and 1339 transitions. [2023-12-02 16:38:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:18,622 INFO L225 Difference]: With dead ends: 1051 [2023-12-02 16:38:18,622 INFO L226 Difference]: Without dead ends: 996 [2023-12-02 16:38:18,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:18,623 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 1719 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:18,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 2887 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:18,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-12-02 16:38:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2023-12-02 16:38:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3196581196581196) internal successors, (772), 606 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:18,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 772 transitions. [2023-12-02 16:38:18,630 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 772 transitions. Word has length 94 [2023-12-02 16:38:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:18,630 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 772 transitions. [2023-12-02 16:38:18,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 772 transitions. [2023-12-02 16:38:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:18,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:18,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:18,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-02 16:38:18,632 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:18,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:18,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1723188937, now seen corresponding path program 1 times [2023-12-02 16:38:18,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:18,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367666156] [2023-12-02 16:38:18,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:18,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:18,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:18,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367666156] [2023-12-02 16:38:18,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367666156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:18,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:18,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72286005] [2023-12-02 16:38:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:18,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:18,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:18,806 INFO L87 Difference]: Start difference. First operand 607 states and 772 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:19,681 INFO L93 Difference]: Finished difference Result 1049 states and 1335 transitions. [2023-12-02 16:38:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:19,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:19,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:19,683 INFO L225 Difference]: With dead ends: 1049 [2023-12-02 16:38:19,683 INFO L226 Difference]: Without dead ends: 996 [2023-12-02 16:38:19,683 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 [2023-12-02 16:38:19,684 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 2486 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2486 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:19,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2486 Valid, 2374 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:38:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-12-02 16:38:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2023-12-02 16:38:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.317948717948718) internal successors, (771), 606 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 771 transitions. [2023-12-02 16:38:19,691 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 771 transitions. Word has length 94 [2023-12-02 16:38:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:19,691 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 771 transitions. [2023-12-02 16:38:19,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 771 transitions. [2023-12-02 16:38:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:19,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:19,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:19,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-02 16:38:19,692 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:19,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash -211515308, now seen corresponding path program 1 times [2023-12-02 16:38:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:19,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042204506] [2023-12-02 16:38:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:19,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:19,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042204506] [2023-12-02 16:38:19,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042204506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:19,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:19,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:19,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538176535] [2023-12-02 16:38:19,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:19,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:19,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:19,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:19,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:19,909 INFO L87 Difference]: Start difference. First operand 607 states and 771 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:20,909 INFO L93 Difference]: Finished difference Result 1055 states and 1339 transitions. [2023-12-02 16:38:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:20,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:20,910 INFO L225 Difference]: With dead ends: 1055 [2023-12-02 16:38:20,911 INFO L226 Difference]: Without dead ends: 996 [2023-12-02 16:38:20,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:20,911 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 1719 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:20,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 2664 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-12-02 16:38:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2023-12-02 16:38:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3162393162393162) internal successors, (770), 606 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 770 transitions. [2023-12-02 16:38:20,918 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 770 transitions. Word has length 94 [2023-12-02 16:38:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:20,919 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 770 transitions. [2023-12-02 16:38:20,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 770 transitions. [2023-12-02 16:38:20,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:38:20,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:20,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:20,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-02 16:38:20,920 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:20,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:20,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2062930942, now seen corresponding path program 1 times [2023-12-02 16:38:20,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:20,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736451268] [2023-12-02 16:38:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:20,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:21,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736451268] [2023-12-02 16:38:21,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736451268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:21,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:21,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:21,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229376332] [2023-12-02 16:38:21,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:21,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:21,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:21,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:21,104 INFO L87 Difference]: Start difference. First operand 607 states and 770 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:22,094 INFO L93 Difference]: Finished difference Result 1051 states and 1334 transitions. [2023-12-02 16:38:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:22,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 16:38:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:22,096 INFO L225 Difference]: With dead ends: 1051 [2023-12-02 16:38:22,096 INFO L226 Difference]: Without dead ends: 996 [2023-12-02 16:38:22,096 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 [2023-12-02 16:38:22,096 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1759 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:22,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 2639 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2044 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:22,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-12-02 16:38:22,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2023-12-02 16:38:22,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3145299145299145) internal successors, (769), 606 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 769 transitions. [2023-12-02 16:38:22,105 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 769 transitions. Word has length 94 [2023-12-02 16:38:22,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:22,105 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 769 transitions. [2023-12-02 16:38:22,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:22,105 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 769 transitions. [2023-12-02 16:38:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 16:38:22,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:22,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:22,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-02 16:38:22,106 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:22,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:22,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1059021627, now seen corresponding path program 1 times [2023-12-02 16:38:22,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:22,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641906542] [2023-12-02 16:38:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:22,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:22,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:22,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641906542] [2023-12-02 16:38:22,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641906542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:22,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:22,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:22,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916586064] [2023-12-02 16:38:22,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:22,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:22,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:22,279 INFO L87 Difference]: Start difference. First operand 607 states and 769 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:23,297 INFO L93 Difference]: Finished difference Result 1085 states and 1378 transitions. [2023-12-02 16:38:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-02 16:38:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:23,299 INFO L225 Difference]: With dead ends: 1085 [2023-12-02 16:38:23,299 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 16:38:23,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:23,300 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 1797 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:23,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 2657 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 16:38:23,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 603. [2023-12-02 16:38:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.314974182444062) internal successors, (764), 602 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 764 transitions. [2023-12-02 16:38:23,308 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 764 transitions. Word has length 95 [2023-12-02 16:38:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:23,308 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 764 transitions. [2023-12-02 16:38:23,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:23,308 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 764 transitions. [2023-12-02 16:38:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 16:38:23,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:23,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:23,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-02 16:38:23,309 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:23,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:23,310 INFO L85 PathProgramCache]: Analyzing trace with hash 249474763, now seen corresponding path program 1 times [2023-12-02 16:38:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:23,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624858709] [2023-12-02 16:38:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:23,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:23,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624858709] [2023-12-02 16:38:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624858709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:23,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:23,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002300632] [2023-12-02 16:38:23,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:23,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:23,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:23,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:23,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:23,478 INFO L87 Difference]: Start difference. First operand 603 states and 764 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:24,469 INFO L93 Difference]: Finished difference Result 1085 states and 1379 transitions. [2023-12-02 16:38:24,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:24,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-02 16:38:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:24,470 INFO L225 Difference]: With dead ends: 1085 [2023-12-02 16:38:24,471 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 16:38:24,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:24,471 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1753 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:24,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1753 Valid, 2757 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 16:38:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2023-12-02 16:38:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.315424610051993) internal successors, (759), 598 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 759 transitions. [2023-12-02 16:38:24,480 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 759 transitions. Word has length 95 [2023-12-02 16:38:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:24,480 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 759 transitions. [2023-12-02 16:38:24,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 759 transitions. [2023-12-02 16:38:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 16:38:24,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:24,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:24,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-02 16:38:24,481 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:24,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2062398610, now seen corresponding path program 1 times [2023-12-02 16:38:24,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:24,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072425266] [2023-12-02 16:38:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:25,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:25,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072425266] [2023-12-02 16:38:25,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072425266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:25,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:25,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 16:38:25,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977005957] [2023-12-02 16:38:25,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:25,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:38:25,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:25,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:38:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:38:25,064 INFO L87 Difference]: Start difference. First operand 599 states and 759 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:25,689 INFO L93 Difference]: Finished difference Result 1161 states and 1485 transitions. [2023-12-02 16:38:25,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:38:25,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-02 16:38:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:25,691 INFO L225 Difference]: With dead ends: 1161 [2023-12-02 16:38:25,691 INFO L226 Difference]: Without dead ends: 1102 [2023-12-02 16:38:25,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-12-02 16:38:25,692 INFO L413 NwaCegarLoop]: 1181 mSDtfsCounter, 2433 mSDsluCounter, 4595 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 5776 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:25,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 5776 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:38:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2023-12-02 16:38:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 587. [2023-12-02 16:38:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 565 states have (on average 1.311504424778761) internal successors, (741), 586 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:25,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 741 transitions. [2023-12-02 16:38:25,700 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 741 transitions. Word has length 95 [2023-12-02 16:38:25,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:25,700 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 741 transitions. [2023-12-02 16:38:25,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 741 transitions. [2023-12-02 16:38:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:25,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:25,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:25,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-02 16:38:25,701 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:25,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1766740068, now seen corresponding path program 1 times [2023-12-02 16:38:25,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:25,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666215164] [2023-12-02 16:38:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:25,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:25,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:25,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666215164] [2023-12-02 16:38:25,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666215164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:25,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:25,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482613276] [2023-12-02 16:38:25,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:25,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:25,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:25,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:25,899 INFO L87 Difference]: Start difference. First operand 587 states and 741 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:26,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:26,909 INFO L93 Difference]: Finished difference Result 986 states and 1236 transitions. [2023-12-02 16:38:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:26,911 INFO L225 Difference]: With dead ends: 986 [2023-12-02 16:38:26,911 INFO L226 Difference]: Without dead ends: 937 [2023-12-02 16:38:26,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:26,912 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 1930 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:26,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1930 Valid, 2120 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-12-02 16:38:26,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 587. [2023-12-02 16:38:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 565 states have (on average 1.3097345132743363) internal successors, (740), 586 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 740 transitions. [2023-12-02 16:38:26,918 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 740 transitions. Word has length 96 [2023-12-02 16:38:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:26,919 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 740 transitions. [2023-12-02 16:38:26,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 740 transitions. [2023-12-02 16:38:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:26,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:26,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:26,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-02 16:38:26,920 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:26,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:26,920 INFO L85 PathProgramCache]: Analyzing trace with hash 500756844, now seen corresponding path program 1 times [2023-12-02 16:38:26,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:26,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369365223] [2023-12-02 16:38:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:27,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369365223] [2023-12-02 16:38:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369365223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:27,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:27,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960001428] [2023-12-02 16:38:27,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:27,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:27,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:27,130 INFO L87 Difference]: Start difference. First operand 587 states and 740 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:27,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:27,998 INFO L93 Difference]: Finished difference Result 989 states and 1238 transitions. [2023-12-02 16:38:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:27,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:28,000 INFO L225 Difference]: With dead ends: 989 [2023-12-02 16:38:28,000 INFO L226 Difference]: Without dead ends: 937 [2023-12-02 16:38:28,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:28,001 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 2786 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2786 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:28,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2786 Valid, 2123 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:38:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-12-02 16:38:28,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 587. [2023-12-02 16:38:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 565 states have (on average 1.3079646017699116) internal successors, (739), 586 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 739 transitions. [2023-12-02 16:38:28,010 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 739 transitions. Word has length 96 [2023-12-02 16:38:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:28,010 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 739 transitions. [2023-12-02 16:38:28,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 739 transitions. [2023-12-02 16:38:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:28,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:28,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:28,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-02 16:38:28,011 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:28,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:28,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1255893419, now seen corresponding path program 1 times [2023-12-02 16:38:28,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:28,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136048369] [2023-12-02 16:38:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:28,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:28,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:28,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136048369] [2023-12-02 16:38:28,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136048369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:28,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:28,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:28,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930263403] [2023-12-02 16:38:28,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:28,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:28,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:28,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:28,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:28,208 INFO L87 Difference]: Start difference. First operand 587 states and 739 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:29,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:29,246 INFO L93 Difference]: Finished difference Result 989 states and 1236 transitions. [2023-12-02 16:38:29,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:29,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:29,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:29,249 INFO L225 Difference]: With dead ends: 989 [2023-12-02 16:38:29,249 INFO L226 Difference]: Without dead ends: 937 [2023-12-02 16:38:29,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:29,250 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 2499 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2499 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:29,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2499 Valid, 2559 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:29,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-12-02 16:38:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 587. [2023-12-02 16:38:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 565 states have (on average 1.3061946902654866) internal successors, (738), 586 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 738 transitions. [2023-12-02 16:38:29,258 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 738 transitions. Word has length 96 [2023-12-02 16:38:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:29,258 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 738 transitions. [2023-12-02 16:38:29,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 738 transitions. [2023-12-02 16:38:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:29,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:29,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:29,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-02 16:38:29,259 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:29,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1126876775, now seen corresponding path program 1 times [2023-12-02 16:38:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878476469] [2023-12-02 16:38:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:29,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:29,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878476469] [2023-12-02 16:38:29,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878476469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:29,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:29,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:29,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136230725] [2023-12-02 16:38:29,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:29,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:29,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:29,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:29,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:29,441 INFO L87 Difference]: Start difference. First operand 587 states and 738 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:30,528 INFO L93 Difference]: Finished difference Result 1040 states and 1309 transitions. [2023-12-02 16:38:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:30,530 INFO L225 Difference]: With dead ends: 1040 [2023-12-02 16:38:30,530 INFO L226 Difference]: Without dead ends: 976 [2023-12-02 16:38:30,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:30,531 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1671 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:30,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 3076 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:38:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-02 16:38:30,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 587. [2023-12-02 16:38:30,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 565 states have (on average 1.3044247787610619) internal successors, (737), 586 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 737 transitions. [2023-12-02 16:38:30,537 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 737 transitions. Word has length 96 [2023-12-02 16:38:30,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:30,537 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 737 transitions. [2023-12-02 16:38:30,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 737 transitions. [2023-12-02 16:38:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:30,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:30,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:30,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-02 16:38:30,539 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:30,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash 443260260, now seen corresponding path program 1 times [2023-12-02 16:38:30,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:30,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613220300] [2023-12-02 16:38:30,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:30,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:30,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:30,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613220300] [2023-12-02 16:38:30,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613220300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:30,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:30,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:30,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093777221] [2023-12-02 16:38:30,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:30,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:30,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:30,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:30,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:30,706 INFO L87 Difference]: Start difference. First operand 587 states and 737 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:31,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:31,535 INFO L93 Difference]: Finished difference Result 989 states and 1234 transitions. [2023-12-02 16:38:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:31,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:31,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:31,537 INFO L225 Difference]: With dead ends: 989 [2023-12-02 16:38:31,537 INFO L226 Difference]: Without dead ends: 937 [2023-12-02 16:38:31,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:31,538 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 1935 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:31,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 2141 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:38:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-12-02 16:38:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 587. [2023-12-02 16:38:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 565 states have (on average 1.3026548672566372) internal successors, (736), 586 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 736 transitions. [2023-12-02 16:38:31,543 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 736 transitions. Word has length 96 [2023-12-02 16:38:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:31,543 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 736 transitions. [2023-12-02 16:38:31,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 736 transitions. [2023-12-02 16:38:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:31,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:31,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:31,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-02 16:38:31,545 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:31,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1939509934, now seen corresponding path program 1 times [2023-12-02 16:38:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225210146] [2023-12-02 16:38:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:31,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:31,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225210146] [2023-12-02 16:38:31,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225210146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:31,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:31,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:31,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226265988] [2023-12-02 16:38:31,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:31,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:31,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:31,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:31,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:31,754 INFO L87 Difference]: Start difference. First operand 587 states and 736 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:32,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:32,796 INFO L93 Difference]: Finished difference Result 1040 states and 1306 transitions. [2023-12-02 16:38:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:32,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:32,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:32,797 INFO L225 Difference]: With dead ends: 1040 [2023-12-02 16:38:32,797 INFO L226 Difference]: Without dead ends: 976 [2023-12-02 16:38:32,798 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 [2023-12-02 16:38:32,798 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 1703 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 2252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:32,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 3086 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2252 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-02 16:38:32,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 587. [2023-12-02 16:38:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 565 states have (on average 1.3008849557522124) internal successors, (735), 586 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:32,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 735 transitions. [2023-12-02 16:38:32,804 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 735 transitions. Word has length 96 [2023-12-02 16:38:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:32,805 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 735 transitions. [2023-12-02 16:38:32,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 735 transitions. [2023-12-02 16:38:32,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:32,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:32,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:32,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-02 16:38:32,806 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:32,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:32,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1544761606, now seen corresponding path program 1 times [2023-12-02 16:38:32,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:32,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129893714] [2023-12-02 16:38:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:32,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:33,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:33,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129893714] [2023-12-02 16:38:33,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129893714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:33,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:33,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 16:38:33,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20617930] [2023-12-02 16:38:33,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:33,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:38:33,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:33,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:38:33,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:38:33,126 INFO L87 Difference]: Start difference. First operand 587 states and 735 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:35,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:35,133 INFO L93 Difference]: Finished difference Result 1402 states and 1781 transitions. [2023-12-02 16:38:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 16:38:35,133 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:35,135 INFO L225 Difference]: With dead ends: 1402 [2023-12-02 16:38:35,135 INFO L226 Difference]: Without dead ends: 1315 [2023-12-02 16:38:35,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-12-02 16:38:35,137 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 4615 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4615 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:35,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4615 Valid, 3732 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:38:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2023-12-02 16:38:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 591. [2023-12-02 16:38:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.2987697715289983) internal successors, (739), 590 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 739 transitions. [2023-12-02 16:38:35,145 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 739 transitions. Word has length 96 [2023-12-02 16:38:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:35,145 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 739 transitions. [2023-12-02 16:38:35,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 739 transitions. [2023-12-02 16:38:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:35,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:35,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:35,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-02 16:38:35,147 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:35,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash -52113932, now seen corresponding path program 1 times [2023-12-02 16:38:35,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:35,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920360083] [2023-12-02 16:38:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:35,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920360083] [2023-12-02 16:38:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920360083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:35,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:35,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:35,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973387910] [2023-12-02 16:38:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:35,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:35,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:35,332 INFO L87 Difference]: Start difference. First operand 591 states and 739 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:36,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:36,349 INFO L93 Difference]: Finished difference Result 988 states and 1231 transitions. [2023-12-02 16:38:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:36,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:36,351 INFO L225 Difference]: With dead ends: 988 [2023-12-02 16:38:36,351 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 16:38:36,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:36,352 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 1871 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:36,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1871 Valid, 2241 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1900 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 16:38:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 591. [2023-12-02 16:38:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.29701230228471) internal successors, (738), 590 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 738 transitions. [2023-12-02 16:38:36,357 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 738 transitions. Word has length 96 [2023-12-02 16:38:36,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:36,357 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 738 transitions. [2023-12-02 16:38:36,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 738 transitions. [2023-12-02 16:38:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:36,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:36,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:36,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-02 16:38:36,359 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:36,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:36,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1952926503, now seen corresponding path program 1 times [2023-12-02 16:38:36,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:36,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102888874] [2023-12-02 16:38:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:36,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:36,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102888874] [2023-12-02 16:38:36,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102888874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:36,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:36,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:36,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963765051] [2023-12-02 16:38:36,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:36,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:36,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:36,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:36,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:36,538 INFO L87 Difference]: Start difference. First operand 591 states and 738 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:37,464 INFO L93 Difference]: Finished difference Result 990 states and 1232 transitions. [2023-12-02 16:38:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:37,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:37,465 INFO L225 Difference]: With dead ends: 990 [2023-12-02 16:38:37,465 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 16:38:37,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:37,466 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 2703 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:37,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2703 Valid, 2226 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:38:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 16:38:37,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 591. [2023-12-02 16:38:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.2952548330404219) internal successors, (737), 590 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 737 transitions. [2023-12-02 16:38:37,473 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 737 transitions. Word has length 96 [2023-12-02 16:38:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:37,473 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 737 transitions. [2023-12-02 16:38:37,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:37,474 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 737 transitions. [2023-12-02 16:38:37,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:37,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:37,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:37,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-02 16:38:37,475 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:37,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1693346717, now seen corresponding path program 1 times [2023-12-02 16:38:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586900352] [2023-12-02 16:38:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:37,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586900352] [2023-12-02 16:38:37,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586900352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:37,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:37,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:37,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885891293] [2023-12-02 16:38:37,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:37,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:37,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:37,698 INFO L87 Difference]: Start difference. First operand 591 states and 737 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:38,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:38,695 INFO L93 Difference]: Finished difference Result 990 states and 1230 transitions. [2023-12-02 16:38:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:38,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:38,697 INFO L225 Difference]: With dead ends: 990 [2023-12-02 16:38:38,697 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 16:38:38,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:38,698 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 2483 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:38,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2483 Valid, 2647 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2063 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 16:38:38,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 591. [2023-12-02 16:38:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.2934973637961336) internal successors, (736), 590 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 736 transitions. [2023-12-02 16:38:38,708 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 736 transitions. Word has length 96 [2023-12-02 16:38:38,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:38,708 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 736 transitions. [2023-12-02 16:38:38,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:38,708 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 736 transitions. [2023-12-02 16:38:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:38,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:38,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:38,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-02 16:38:38,710 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:38,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash 427743812, now seen corresponding path program 1 times [2023-12-02 16:38:38,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:38,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457333935] [2023-12-02 16:38:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:38,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:38,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:38,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457333935] [2023-12-02 16:38:38,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457333935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:38,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:38,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:38,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199152501] [2023-12-02 16:38:38,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:38,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:38,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:38,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:38,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:38,888 INFO L87 Difference]: Start difference. First operand 591 states and 736 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:39,768 INFO L93 Difference]: Finished difference Result 946 states and 1169 transitions. [2023-12-02 16:38:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:39,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:39,770 INFO L225 Difference]: With dead ends: 946 [2023-12-02 16:38:39,770 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 16:38:39,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:39,770 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1859 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:39,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 2229 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:38:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 16:38:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 591. [2023-12-02 16:38:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.2917398945518452) internal successors, (735), 590 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 735 transitions. [2023-12-02 16:38:39,776 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 735 transitions. Word has length 96 [2023-12-02 16:38:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:39,776 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 735 transitions. [2023-12-02 16:38:39,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 735 transitions. [2023-12-02 16:38:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:39,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:39,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:39,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-02 16:38:39,777 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:39,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1536201810, now seen corresponding path program 1 times [2023-12-02 16:38:39,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:39,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282316767] [2023-12-02 16:38:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:39,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:39,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282316767] [2023-12-02 16:38:39,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282316767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:39,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:39,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916160785] [2023-12-02 16:38:39,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:39,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:39,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:39,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:39,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:39,953 INFO L87 Difference]: Start difference. First operand 591 states and 735 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:40,962 INFO L93 Difference]: Finished difference Result 997 states and 1240 transitions. [2023-12-02 16:38:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:40,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:40,964 INFO L225 Difference]: With dead ends: 997 [2023-12-02 16:38:40,964 INFO L226 Difference]: Without dead ends: 980 [2023-12-02 16:38:40,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:40,964 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 1655 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:40,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 2836 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-12-02 16:38:40,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 591. [2023-12-02 16:38:40,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.2899824253075571) internal successors, (734), 590 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:40,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 734 transitions. [2023-12-02 16:38:40,970 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 734 transitions. Word has length 96 [2023-12-02 16:38:40,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:40,970 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 734 transitions. [2023-12-02 16:38:40,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:40,970 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 734 transitions. [2023-12-02 16:38:40,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:40,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:40,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:40,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-02 16:38:40,971 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:40,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:40,971 INFO L85 PathProgramCache]: Analyzing trace with hash 134588212, now seen corresponding path program 1 times [2023-12-02 16:38:40,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:40,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431623502] [2023-12-02 16:38:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:40,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:41,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:41,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431623502] [2023-12-02 16:38:41,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431623502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:41,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:41,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:41,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227974371] [2023-12-02 16:38:41,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:41,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:41,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:41,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:41,140 INFO L87 Difference]: Start difference. First operand 591 states and 734 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:42,063 INFO L93 Difference]: Finished difference Result 990 states and 1226 transitions. [2023-12-02 16:38:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:42,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:42,065 INFO L225 Difference]: With dead ends: 990 [2023-12-02 16:38:42,065 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 16:38:42,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:42,066 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 2688 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:42,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2688 Valid, 2218 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:38:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 16:38:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 591. [2023-12-02 16:38:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.2882249560632688) internal successors, (733), 590 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 733 transitions. [2023-12-02 16:38:42,073 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 733 transitions. Word has length 96 [2023-12-02 16:38:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:42,073 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 733 transitions. [2023-12-02 16:38:42,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 733 transitions. [2023-12-02 16:38:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:42,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:42,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:42,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-02 16:38:42,075 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:42,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:42,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1131131867, now seen corresponding path program 1 times [2023-12-02 16:38:42,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:42,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983274183] [2023-12-02 16:38:42,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:42,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:42,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:42,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983274183] [2023-12-02 16:38:42,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983274183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:42,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357548357] [2023-12-02 16:38:42,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:42,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:42,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:42,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:42,247 INFO L87 Difference]: Start difference. First operand 591 states and 733 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:43,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:43,253 INFO L93 Difference]: Finished difference Result 946 states and 1165 transitions. [2023-12-02 16:38:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:43,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:43,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:43,255 INFO L225 Difference]: With dead ends: 946 [2023-12-02 16:38:43,255 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 16:38:43,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:43,256 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 2634 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2634 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:43,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2634 Valid, 2277 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:38:43,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 16:38:43,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 591. [2023-12-02 16:38:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.2864674868189807) internal successors, (732), 590 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 732 transitions. [2023-12-02 16:38:43,261 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 732 transitions. Word has length 96 [2023-12-02 16:38:43,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:43,261 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 732 transitions. [2023-12-02 16:38:43,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:43,262 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 732 transitions. [2023-12-02 16:38:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:43,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:43,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:43,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-02 16:38:43,263 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:43,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1928248723, now seen corresponding path program 1 times [2023-12-02 16:38:43,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:43,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505390413] [2023-12-02 16:38:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:43,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:43,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:43,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505390413] [2023-12-02 16:38:43,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505390413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:43,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:43,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:43,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885595220] [2023-12-02 16:38:43,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:43,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:43,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:43,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:43,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:43,467 INFO L87 Difference]: Start difference. First operand 591 states and 732 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:44,494 INFO L93 Difference]: Finished difference Result 990 states and 1223 transitions. [2023-12-02 16:38:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:44,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:44,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:44,495 INFO L225 Difference]: With dead ends: 990 [2023-12-02 16:38:44,495 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 16:38:44,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:44,496 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 2466 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:44,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 2787 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 16:38:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 16:38:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 591. [2023-12-02 16:38:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.2847100175746924) internal successors, (731), 590 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 731 transitions. [2023-12-02 16:38:44,501 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 731 transitions. Word has length 96 [2023-12-02 16:38:44,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:44,501 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 731 transitions. [2023-12-02 16:38:44,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 731 transitions. [2023-12-02 16:38:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:44,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:44,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:44,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-02 16:38:44,503 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:44,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:44,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1101595287, now seen corresponding path program 1 times [2023-12-02 16:38:44,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:44,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688373806] [2023-12-02 16:38:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:44,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:44,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:44,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688373806] [2023-12-02 16:38:44,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688373806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:44,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:44,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:44,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462547990] [2023-12-02 16:38:44,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:44,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:44,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:44,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:44,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:44,672 INFO L87 Difference]: Start difference. First operand 591 states and 731 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:45,647 INFO L93 Difference]: Finished difference Result 993 states and 1225 transitions. [2023-12-02 16:38:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:45,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:45,650 INFO L225 Difference]: With dead ends: 993 [2023-12-02 16:38:45,650 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 16:38:45,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:45,651 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 2540 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:45,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 2349 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:38:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 16:38:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 591. [2023-12-02 16:38:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.2829525483304043) internal successors, (730), 590 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 730 transitions. [2023-12-02 16:38:45,656 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 730 transitions. Word has length 96 [2023-12-02 16:38:45,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:45,657 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 730 transitions. [2023-12-02 16:38:45,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 730 transitions. [2023-12-02 16:38:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:45,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:45,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:45,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-02 16:38:45,658 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:45,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:45,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1279554647, now seen corresponding path program 1 times [2023-12-02 16:38:45,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:45,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645988308] [2023-12-02 16:38:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:45,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:45,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:45,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645988308] [2023-12-02 16:38:45,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645988308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:45,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:45,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:45,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450635045] [2023-12-02 16:38:45,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:45,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:45,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:45,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:45,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:45,827 INFO L87 Difference]: Start difference. First operand 591 states and 730 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:46,744 INFO L93 Difference]: Finished difference Result 990 states and 1220 transitions. [2023-12-02 16:38:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:46,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:46,745 INFO L225 Difference]: With dead ends: 990 [2023-12-02 16:38:46,745 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 16:38:46,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:46,746 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1826 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:46,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 2274 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:38:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 16:38:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 591. [2023-12-02 16:38:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 569 states have (on average 1.281195079086116) internal successors, (729), 590 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 729 transitions. [2023-12-02 16:38:46,751 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 729 transitions. Word has length 96 [2023-12-02 16:38:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:46,752 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 729 transitions. [2023-12-02 16:38:46,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 729 transitions. [2023-12-02 16:38:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 16:38:46,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:46,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:46,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-02 16:38:46,753 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:46,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1767916854, now seen corresponding path program 1 times [2023-12-02 16:38:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669074221] [2023-12-02 16:38:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:46,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:47,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:47,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669074221] [2023-12-02 16:38:47,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669074221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:47,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:47,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:38:47,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811380344] [2023-12-02 16:38:47,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:47,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 16:38:47,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:47,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 16:38:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:38:47,588 INFO L87 Difference]: Start difference. First operand 591 states and 729 transitions. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:49,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:49,300 INFO L93 Difference]: Finished difference Result 1387 states and 1698 transitions. [2023-12-02 16:38:49,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 16:38:49,300 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-02 16:38:49,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:49,301 INFO L225 Difference]: With dead ends: 1387 [2023-12-02 16:38:49,301 INFO L226 Difference]: Without dead ends: 1147 [2023-12-02 16:38:49,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:38:49,302 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 4489 mSDsluCounter, 6378 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 7400 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:49,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 7400 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:38:49,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2023-12-02 16:38:49,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 513. [2023-12-02 16:38:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 492 states have (on average 1.2621951219512195) internal successors, (621), 512 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 621 transitions. [2023-12-02 16:38:49,307 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 621 transitions. Word has length 96 [2023-12-02 16:38:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:49,307 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 621 transitions. [2023-12-02 16:38:49,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 621 transitions. [2023-12-02 16:38:49,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 16:38:49,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:49,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:49,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-02 16:38:49,308 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:49,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:49,309 INFO L85 PathProgramCache]: Analyzing trace with hash -308092620, now seen corresponding path program 1 times [2023-12-02 16:38:49,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:49,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904992959] [2023-12-02 16:38:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:49,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:49,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:49,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904992959] [2023-12-02 16:38:49,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904992959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:49,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:49,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:49,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122800024] [2023-12-02 16:38:49,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:49,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:49,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:49,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:49,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:49,499 INFO L87 Difference]: Start difference. First operand 513 states and 621 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:50,499 INFO L93 Difference]: Finished difference Result 951 states and 1169 transitions. [2023-12-02 16:38:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:50,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-02 16:38:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:50,501 INFO L225 Difference]: With dead ends: 951 [2023-12-02 16:38:50,501 INFO L226 Difference]: Without dead ends: 864 [2023-12-02 16:38:50,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:50,502 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 2112 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:50,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 2300 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:38:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-12-02 16:38:50,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 509. [2023-12-02 16:38:50,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 488 states have (on average 1.2622950819672132) internal successors, (616), 508 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 616 transitions. [2023-12-02 16:38:50,509 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 616 transitions. Word has length 97 [2023-12-02 16:38:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:50,509 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 616 transitions. [2023-12-02 16:38:50,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:50,509 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 616 transitions. [2023-12-02 16:38:50,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 16:38:50,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:50,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:50,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-02 16:38:50,511 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:50,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:50,511 INFO L85 PathProgramCache]: Analyzing trace with hash -127026973, now seen corresponding path program 1 times [2023-12-02 16:38:50,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:50,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232323432] [2023-12-02 16:38:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:50,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:51,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:51,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232323432] [2023-12-02 16:38:51,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232323432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:51,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:51,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:38:51,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175928166] [2023-12-02 16:38:51,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:51,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 16:38:51,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 16:38:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:38:51,141 INFO L87 Difference]: Start difference. First operand 509 states and 616 transitions. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:52,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:52,095 INFO L93 Difference]: Finished difference Result 1418 states and 1767 transitions. [2023-12-02 16:38:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 16:38:52,096 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-02 16:38:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:52,097 INFO L225 Difference]: With dead ends: 1418 [2023-12-02 16:38:52,097 INFO L226 Difference]: Without dead ends: 1327 [2023-12-02 16:38:52,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:38:52,098 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 4451 mSDsluCounter, 7445 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4451 SdHoareTripleChecker+Valid, 8719 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:52,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4451 Valid, 8719 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:38:52,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2023-12-02 16:38:52,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 465. [2023-12-02 16:38:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 445 states have (on average 1.256179775280899) internal successors, (559), 464 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 559 transitions. [2023-12-02 16:38:52,104 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 559 transitions. Word has length 97 [2023-12-02 16:38:52,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:52,104 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 559 transitions. [2023-12-02 16:38:52,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:52,104 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 559 transitions. [2023-12-02 16:38:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 16:38:52,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:52,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:52,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-02 16:38:52,105 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:52,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:52,105 INFO L85 PathProgramCache]: Analyzing trace with hash -444024130, now seen corresponding path program 1 times [2023-12-02 16:38:52,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:52,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745455692] [2023-12-02 16:38:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:52,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745455692] [2023-12-02 16:38:52,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745455692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:52,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:52,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:52,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12592215] [2023-12-02 16:38:52,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:52,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:52,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:52,294 INFO L87 Difference]: Start difference. First operand 465 states and 559 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:53,090 INFO L93 Difference]: Finished difference Result 846 states and 1031 transitions. [2023-12-02 16:38:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:38:53,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-02 16:38:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:53,092 INFO L225 Difference]: With dead ends: 846 [2023-12-02 16:38:53,092 INFO L226 Difference]: Without dead ends: 782 [2023-12-02 16:38:53,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:38:53,092 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1282 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:53,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 2298 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:38:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2023-12-02 16:38:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 465. [2023-12-02 16:38:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 445 states have (on average 1.253932584269663) internal successors, (558), 464 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 558 transitions. [2023-12-02 16:38:53,097 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 558 transitions. Word has length 97 [2023-12-02 16:38:53,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:53,098 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 558 transitions. [2023-12-02 16:38:53,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:53,098 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 558 transitions. [2023-12-02 16:38:53,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 16:38:53,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:53,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:53,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-02 16:38:53,099 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:53,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1846117347, now seen corresponding path program 1 times [2023-12-02 16:38:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803144589] [2023-12-02 16:38:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:53,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:53,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803144589] [2023-12-02 16:38:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803144589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:53,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:53,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644998517] [2023-12-02 16:38:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:53,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:53,267 INFO L87 Difference]: Start difference. First operand 465 states and 558 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:53,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:53,951 INFO L93 Difference]: Finished difference Result 811 states and 982 transitions. [2023-12-02 16:38:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:53,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-02 16:38:53,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:53,952 INFO L225 Difference]: With dead ends: 811 [2023-12-02 16:38:53,952 INFO L226 Difference]: Without dead ends: 762 [2023-12-02 16:38:53,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:53,953 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1410 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:53,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 1857 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:38:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-02 16:38:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 465. [2023-12-02 16:38:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 445 states have (on average 1.2516853932584269) internal successors, (557), 464 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 557 transitions. [2023-12-02 16:38:53,957 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 557 transitions. Word has length 97 [2023-12-02 16:38:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:53,957 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 557 transitions. [2023-12-02 16:38:53,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 557 transitions. [2023-12-02 16:38:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 16:38:53,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:53,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:53,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-02 16:38:53,958 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:53,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1183609489, now seen corresponding path program 1 times [2023-12-02 16:38:53,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:53,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087384575] [2023-12-02 16:38:53,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:53,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:54,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087384575] [2023-12-02 16:38:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087384575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:54,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:54,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:38:54,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461331391] [2023-12-02 16:38:54,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:54,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:54,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:54,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:54,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:54,117 INFO L87 Difference]: Start difference. First operand 465 states and 557 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:54,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:54,912 INFO L93 Difference]: Finished difference Result 814 states and 984 transitions. [2023-12-02 16:38:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:38:54,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-02 16:38:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:54,913 INFO L225 Difference]: With dead ends: 814 [2023-12-02 16:38:54,913 INFO L226 Difference]: Without dead ends: 762 [2023-12-02 16:38:54,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:38:54,914 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 2008 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:54,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 1860 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:38:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-02 16:38:54,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 465. [2023-12-02 16:38:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 445 states have (on average 1.249438202247191) internal successors, (556), 464 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 556 transitions. [2023-12-02 16:38:54,918 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 556 transitions. Word has length 97 [2023-12-02 16:38:54,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:54,919 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 556 transitions. [2023-12-02 16:38:54,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 556 transitions. [2023-12-02 16:38:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 16:38:54,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:54,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:54,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-02 16:38:54,920 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:54,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash 236768823, now seen corresponding path program 1 times [2023-12-02 16:38:54,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:54,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221474220] [2023-12-02 16:38:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:55,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:55,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221474220] [2023-12-02 16:38:55,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221474220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:55,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:55,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 16:38:55,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776715846] [2023-12-02 16:38:55,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:55,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 16:38:55,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 16:38:55,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:38:55,418 INFO L87 Difference]: Start difference. First operand 465 states and 556 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:56,495 INFO L93 Difference]: Finished difference Result 1428 states and 1754 transitions. [2023-12-02 16:38:56,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 16:38:56,495 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2023-12-02 16:38:56,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:56,496 INFO L225 Difference]: With dead ends: 1428 [2023-12-02 16:38:56,496 INFO L226 Difference]: Without dead ends: 1357 [2023-12-02 16:38:56,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:38:56,497 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 2439 mSDsluCounter, 7473 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 8766 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:56,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2439 Valid, 8766 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:38:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2023-12-02 16:38:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 441. [2023-12-02 16:38:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 422 states have (on average 1.2440758293838863) internal successors, (525), 440 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 525 transitions. [2023-12-02 16:38:56,502 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 525 transitions. Word has length 98 [2023-12-02 16:38:56,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:56,503 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 525 transitions. [2023-12-02 16:38:56,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:56,503 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 525 transitions. [2023-12-02 16:38:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 16:38:56,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:56,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:56,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-02 16:38:56,504 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:56,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1830728152, now seen corresponding path program 1 times [2023-12-02 16:38:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:56,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017514383] [2023-12-02 16:38:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:57,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:57,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017514383] [2023-12-02 16:38:57,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017514383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:57,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:57,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 16:38:57,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942045865] [2023-12-02 16:38:57,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:57,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 16:38:57,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:57,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 16:38:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:38:57,017 INFO L87 Difference]: Start difference. First operand 441 states and 525 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:58,273 INFO L93 Difference]: Finished difference Result 1287 states and 1593 transitions. [2023-12-02 16:38:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 16:38:58,274 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2023-12-02 16:38:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:58,275 INFO L225 Difference]: With dead ends: 1287 [2023-12-02 16:38:58,275 INFO L226 Difference]: Without dead ends: 1201 [2023-12-02 16:38:58,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:38:58,276 INFO L413 NwaCegarLoop]: 1196 mSDtfsCounter, 2319 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 9409 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:58,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2319 Valid, 9409 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:38:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2023-12-02 16:38:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 402. [2023-12-02 16:38:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 386 states have (on average 1.238341968911917) internal successors, (478), 401 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 478 transitions. [2023-12-02 16:38:58,280 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 478 transitions. Word has length 98 [2023-12-02 16:38:58,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:58,280 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 478 transitions. [2023-12-02 16:38:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 478 transitions. [2023-12-02 16:38:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 16:38:58,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:58,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:58,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-02 16:38:58,281 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:58,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash 843370531, now seen corresponding path program 1 times [2023-12-02 16:38:58,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:58,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625566685] [2023-12-02 16:38:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:58,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625566685] [2023-12-02 16:38:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625566685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:58,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:58,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 16:38:58,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670641923] [2023-12-02 16:38:58,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:38:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:58,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:38:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-02 16:38:58,709 INFO L87 Difference]: Start difference. First operand 402 states and 478 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:59,601 INFO L93 Difference]: Finished difference Result 625 states and 743 transitions. [2023-12-02 16:38:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:38:59,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2023-12-02 16:38:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:59,601 INFO L225 Difference]: With dead ends: 625 [2023-12-02 16:38:59,601 INFO L226 Difference]: Without dead ends: 574 [2023-12-02 16:38:59,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:38:59,602 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 2488 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:59,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2488 Valid, 2462 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:38:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-12-02 16:38:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 398. [2023-12-02 16:38:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 383 states have (on average 1.2349869451697129) internal successors, (473), 397 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 473 transitions. [2023-12-02 16:38:59,606 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 473 transitions. Word has length 98 [2023-12-02 16:38:59,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:59,606 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 473 transitions. [2023-12-02 16:38:59,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:59,606 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 473 transitions. [2023-12-02 16:38:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 16:38:59,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:59,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:38:59,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-02 16:38:59,607 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:38:59,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1087150783, now seen corresponding path program 1 times [2023-12-02 16:38:59,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:38:59,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982075089] [2023-12-02 16:38:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:59,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:38:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:00,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:00,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982075089] [2023-12-02 16:39:00,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982075089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:00,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:00,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 16:39:00,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274534654] [2023-12-02 16:39:00,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:00,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 16:39:00,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:00,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 16:39:00,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:39:00,108 INFO L87 Difference]: Start difference. First operand 398 states and 473 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:01,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:01,158 INFO L93 Difference]: Finished difference Result 1281 states and 1576 transitions. [2023-12-02 16:39:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 16:39:01,158 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2023-12-02 16:39:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:01,159 INFO L225 Difference]: With dead ends: 1281 [2023-12-02 16:39:01,159 INFO L226 Difference]: Without dead ends: 1201 [2023-12-02 16:39:01,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:39:01,160 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 2048 mSDsluCounter, 6912 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 8080 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:01,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 8080 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:39:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2023-12-02 16:39:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 365. [2023-12-02 16:39:01,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 353 states have (on average 1.226628895184136) internal successors, (433), 364 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 433 transitions. [2023-12-02 16:39:01,164 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 433 transitions. Word has length 98 [2023-12-02 16:39:01,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:01,164 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 433 transitions. [2023-12-02 16:39:01,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 433 transitions. [2023-12-02 16:39:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 16:39:01,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:01,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:01,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-02 16:39:01,166 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:01,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash -534371604, now seen corresponding path program 1 times [2023-12-02 16:39:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:01,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53716854] [2023-12-02 16:39:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:01,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:01,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:01,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53716854] [2023-12-02 16:39:01,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53716854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:01,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:01,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 16:39:01,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954271193] [2023-12-02 16:39:01,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:01,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 16:39:01,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:01,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 16:39:01,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:39:01,617 INFO L87 Difference]: Start difference. First operand 365 states and 433 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:02,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:02,603 INFO L93 Difference]: Finished difference Result 988 states and 1232 transitions. [2023-12-02 16:39:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 16:39:02,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2023-12-02 16:39:02,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:02,604 INFO L225 Difference]: With dead ends: 988 [2023-12-02 16:39:02,604 INFO L226 Difference]: Without dead ends: 824 [2023-12-02 16:39:02,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:39:02,605 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1741 mSDsluCounter, 5064 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 5846 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:02,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 5846 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:39:02,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2023-12-02 16:39:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 248. [2023-12-02 16:39:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 241 states have (on average 1.1991701244813278) internal successors, (289), 247 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 289 transitions. [2023-12-02 16:39:02,608 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 289 transitions. Word has length 98 [2023-12-02 16:39:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:02,609 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 289 transitions. [2023-12-02 16:39:02,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:02,609 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 289 transitions. [2023-12-02 16:39:02,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 16:39:02,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:02,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:02,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-02 16:39:02,610 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:02,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:02,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1090193566, now seen corresponding path program 1 times [2023-12-02 16:39:02,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:02,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523232719] [2023-12-02 16:39:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:02,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:02,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:02,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523232719] [2023-12-02 16:39:02,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523232719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:02,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:02,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:39:02,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604459535] [2023-12-02 16:39:02,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:02,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:39:02,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:02,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:39:02,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:39:02,814 INFO L87 Difference]: Start difference. First operand 248 states and 289 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:03,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:03,208 INFO L93 Difference]: Finished difference Result 354 states and 415 transitions. [2023-12-02 16:39:03,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:39:03,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-02 16:39:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:03,209 INFO L225 Difference]: With dead ends: 354 [2023-12-02 16:39:03,209 INFO L226 Difference]: Without dead ends: 347 [2023-12-02 16:39:03,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:39:03,209 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 903 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:03,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 906 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:39:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-02 16:39:03,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 248. [2023-12-02 16:39:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 241 states have (on average 1.1950207468879668) internal successors, (288), 247 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 288 transitions. [2023-12-02 16:39:03,212 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 288 transitions. Word has length 99 [2023-12-02 16:39:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:03,212 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 288 transitions. [2023-12-02 16:39:03,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 288 transitions. [2023-12-02 16:39:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 16:39:03,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:03,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:03,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-02 16:39:03,213 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:03,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1504976506, now seen corresponding path program 1 times [2023-12-02 16:39:03,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:03,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440486969] [2023-12-02 16:39:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:03,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:03,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:03,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440486969] [2023-12-02 16:39:03,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440486969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:03,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:03,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:39:03,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492281238] [2023-12-02 16:39:03,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:03,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:39:03,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:03,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:39:03,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:39:03,391 INFO L87 Difference]: Start difference. First operand 248 states and 288 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:03,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:03,874 INFO L93 Difference]: Finished difference Result 530 states and 643 transitions. [2023-12-02 16:39:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:39:03,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-02 16:39:03,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:03,875 INFO L225 Difference]: With dead ends: 530 [2023-12-02 16:39:03,875 INFO L226 Difference]: Without dead ends: 465 [2023-12-02 16:39:03,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:39:03,875 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 710 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:03,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1287 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:39:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-02 16:39:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 248. [2023-12-02 16:39:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 241 states have (on average 1.1908713692946058) internal successors, (287), 247 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:03,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 287 transitions. [2023-12-02 16:39:03,878 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 287 transitions. Word has length 99 [2023-12-02 16:39:03,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:03,878 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 287 transitions. [2023-12-02 16:39:03,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:03,879 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 287 transitions. [2023-12-02 16:39:03,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 16:39:03,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:03,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:03,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-02 16:39:03,879 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:03,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:03,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1555658637, now seen corresponding path program 1 times [2023-12-02 16:39:03,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:03,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705304201] [2023-12-02 16:39:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:03,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:04,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:04,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705304201] [2023-12-02 16:39:04,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705304201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:04,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:04,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 16:39:04,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799504271] [2023-12-02 16:39:04,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:04,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:39:04,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:39:04,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:39:04,264 INFO L87 Difference]: Start difference. First operand 248 states and 287 transitions. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:04,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:04,793 INFO L93 Difference]: Finished difference Result 615 states and 749 transitions. [2023-12-02 16:39:04,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:39:04,793 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-02 16:39:04,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:04,794 INFO L225 Difference]: With dead ends: 615 [2023-12-02 16:39:04,794 INFO L226 Difference]: Without dead ends: 493 [2023-12-02 16:39:04,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:39:04,795 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1294 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:04,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 1506 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:39:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-02 16:39:04,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 173. [2023-12-02 16:39:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 170 states have (on average 1.1529411764705881) internal successors, (196), 172 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 196 transitions. [2023-12-02 16:39:04,798 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 196 transitions. Word has length 99 [2023-12-02 16:39:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:04,798 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 196 transitions. [2023-12-02 16:39:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:04,799 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 196 transitions. [2023-12-02 16:39:04,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 16:39:04,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:04,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:04,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-02 16:39:04,799 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:04,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1003979678, now seen corresponding path program 1 times [2023-12-02 16:39:04,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:04,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017236] [2023-12-02 16:39:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:04,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:05,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017236] [2023-12-02 16:39:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:05,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:05,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 16:39:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750892324] [2023-12-02 16:39:05,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:05,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:39:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:05,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:39:05,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-02 16:39:05,282 INFO L87 Difference]: Start difference. First operand 173 states and 196 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:05,787 INFO L93 Difference]: Finished difference Result 341 states and 412 transitions. [2023-12-02 16:39:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:39:05,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-02 16:39:05,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:05,788 INFO L225 Difference]: With dead ends: 341 [2023-12-02 16:39:05,788 INFO L226 Difference]: Without dead ends: 335 [2023-12-02 16:39:05,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:39:05,789 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 939 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:05,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1467 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:39:05,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-02 16:39:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 167. [2023-12-02 16:39:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 165 states have (on average 1.1515151515151516) internal successors, (190), 166 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 190 transitions. [2023-12-02 16:39:05,791 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 190 transitions. Word has length 101 [2023-12-02 16:39:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:05,791 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 190 transitions. [2023-12-02 16:39:05,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:05,791 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 190 transitions. [2023-12-02 16:39:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 16:39:05,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:05,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:05,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-02 16:39:05,792 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:05,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1120059438, now seen corresponding path program 1 times [2023-12-02 16:39:05,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:05,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039929941] [2023-12-02 16:39:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:05,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:07,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:07,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039929941] [2023-12-02 16:39:07,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039929941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:07,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:07,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2023-12-02 16:39:07,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728142202] [2023-12-02 16:39:07,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:07,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 16:39:07,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 16:39:07,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2023-12-02 16:39:07,594 INFO L87 Difference]: Start difference. First operand 167 states and 190 transitions. Second operand has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:12,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:12,556 INFO L93 Difference]: Finished difference Result 687 states and 826 transitions. [2023-12-02 16:39:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 16:39:12,556 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-02 16:39:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:12,557 INFO L225 Difference]: With dead ends: 687 [2023-12-02 16:39:12,557 INFO L226 Difference]: Without dead ends: 679 [2023-12-02 16:39:12,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=455, Invalid=2737, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 16:39:12,558 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1720 mSDsluCounter, 9993 mSDsCounter, 0 mSdLazyCounter, 5193 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 10566 SdHoareTripleChecker+Invalid, 5201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:12,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 10566 Invalid, 5201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5193 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 16:39:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-12-02 16:39:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 191. [2023-12-02 16:39:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 189 states have (on average 1.1587301587301588) internal successors, (219), 190 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 219 transitions. [2023-12-02 16:39:12,560 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 219 transitions. Word has length 101 [2023-12-02 16:39:12,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:12,560 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 219 transitions. [2023-12-02 16:39:12,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 219 transitions. [2023-12-02 16:39:12,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 16:39:12,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:12,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:12,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-02 16:39:12,561 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:12,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1258225100, now seen corresponding path program 1 times [2023-12-02 16:39:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:12,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456272251] [2023-12-02 16:39:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:13,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:13,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456272251] [2023-12-02 16:39:13,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456272251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:13,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:13,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 16:39:13,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142382584] [2023-12-02 16:39:13,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:13,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 16:39:13,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:13,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 16:39:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:39:13,058 INFO L87 Difference]: Start difference. First operand 191 states and 219 transitions. Second operand has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:13,821 INFO L93 Difference]: Finished difference Result 471 states and 582 transitions. [2023-12-02 16:39:13,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 16:39:13,822 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-02 16:39:13,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:13,822 INFO L225 Difference]: With dead ends: 471 [2023-12-02 16:39:13,822 INFO L226 Difference]: Without dead ends: 456 [2023-12-02 16:39:13,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:39:13,823 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 802 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:13,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 3106 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:39:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-02 16:39:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 155. [2023-12-02 16:39:13,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1493506493506493) internal successors, (177), 154 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2023-12-02 16:39:13,825 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 102 [2023-12-02 16:39:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:13,825 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2023-12-02 16:39:13,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2023-12-02 16:39:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-02 16:39:13,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:13,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:13,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-02 16:39:13,826 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:13,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash 581680043, now seen corresponding path program 1 times [2023-12-02 16:39:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834012978] [2023-12-02 16:39:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:13,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:13,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834012978] [2023-12-02 16:39:13,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834012978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:13,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:13,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:39:13,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001131775] [2023-12-02 16:39:13,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:13,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:39:13,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:13,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:39:13,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:13,925 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:13,951 INFO L93 Difference]: Finished difference Result 249 states and 301 transitions. [2023-12-02 16:39:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:39:13,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-02 16:39:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:13,952 INFO L225 Difference]: With dead ends: 249 [2023-12-02 16:39:13,952 INFO L226 Difference]: Without dead ends: 202 [2023-12-02 16:39:13,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:13,953 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 72 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:13,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 339 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:39:13,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-02 16:39:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2023-12-02 16:39:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.1897435897435897) internal successors, (232), 195 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 232 transitions. [2023-12-02 16:39:13,955 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 232 transitions. Word has length 119 [2023-12-02 16:39:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:13,955 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 232 transitions. [2023-12-02 16:39:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 232 transitions. [2023-12-02 16:39:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 16:39:13,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:13,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:13,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-02 16:39:13,956 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:13,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1849352348, now seen corresponding path program 1 times [2023-12-02 16:39:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:13,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469324216] [2023-12-02 16:39:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:13,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:14,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:14,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469324216] [2023-12-02 16:39:14,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469324216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:14,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:14,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:39:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898985714] [2023-12-02 16:39:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:14,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:39:14,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:14,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:39:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,056 INFO L87 Difference]: Start difference. First operand 196 states and 232 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:14,082 INFO L93 Difference]: Finished difference Result 372 states and 466 transitions. [2023-12-02 16:39:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:39:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-12-02 16:39:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:14,083 INFO L225 Difference]: With dead ends: 372 [2023-12-02 16:39:14,083 INFO L226 Difference]: Without dead ends: 284 [2023-12-02 16:39:14,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,084 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 65 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:14,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 339 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:39:14,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-02 16:39:14,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2023-12-02 16:39:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.2307692307692308) internal successors, (336), 273 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 336 transitions. [2023-12-02 16:39:14,086 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 336 transitions. Word has length 122 [2023-12-02 16:39:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:14,087 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 336 transitions. [2023-12-02 16:39:14,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,087 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 336 transitions. [2023-12-02 16:39:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 16:39:14,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:14,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:14,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-02 16:39:14,088 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:14,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:14,088 INFO L85 PathProgramCache]: Analyzing trace with hash -856104242, now seen corresponding path program 1 times [2023-12-02 16:39:14,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:14,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578721935] [2023-12-02 16:39:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:14,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:14,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578721935] [2023-12-02 16:39:14,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578721935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:14,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:14,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:39:14,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855059562] [2023-12-02 16:39:14,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:14,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:39:14,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:39:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,189 INFO L87 Difference]: Start difference. First operand 274 states and 336 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:14,216 INFO L93 Difference]: Finished difference Result 606 states and 778 transitions. [2023-12-02 16:39:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:39:14,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2023-12-02 16:39:14,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:14,217 INFO L225 Difference]: With dead ends: 606 [2023-12-02 16:39:14,217 INFO L226 Difference]: Without dead ends: 440 [2023-12-02 16:39:14,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,218 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 58 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:14,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 339 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:39:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-02 16:39:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 422. [2023-12-02 16:39:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.2636579572446556) internal successors, (532), 421 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 532 transitions. [2023-12-02 16:39:14,226 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 532 transitions. Word has length 125 [2023-12-02 16:39:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:14,227 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 532 transitions. [2023-12-02 16:39:14,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 532 transitions. [2023-12-02 16:39:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 16:39:14,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:14,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:14,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-02 16:39:14,228 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:14,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1272429725, now seen corresponding path program 1 times [2023-12-02 16:39:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565353681] [2023-12-02 16:39:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:14,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:14,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565353681] [2023-12-02 16:39:14,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565353681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:14,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:14,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:39:14,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572618990] [2023-12-02 16:39:14,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:14,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:39:14,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:14,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:39:14,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,327 INFO L87 Difference]: Start difference. First operand 422 states and 532 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:14,357 INFO L93 Difference]: Finished difference Result 1050 states and 1366 transitions. [2023-12-02 16:39:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:39:14,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-02 16:39:14,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:14,358 INFO L225 Difference]: With dead ends: 1050 [2023-12-02 16:39:14,358 INFO L226 Difference]: Without dead ends: 736 [2023-12-02 16:39:14,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,359 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 51 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:14,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 339 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:39:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-12-02 16:39:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 702. [2023-12-02 16:39:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.2838801711840229) internal successors, (900), 701 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 900 transitions. [2023-12-02 16:39:14,365 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 900 transitions. Word has length 128 [2023-12-02 16:39:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:14,365 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 900 transitions. [2023-12-02 16:39:14,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 900 transitions. [2023-12-02 16:39:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 16:39:14,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:14,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:14,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-02 16:39:14,366 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:14,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1373569731, now seen corresponding path program 1 times [2023-12-02 16:39:14,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:14,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076971490] [2023-12-02 16:39:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:14,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:14,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:14,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076971490] [2023-12-02 16:39:14,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076971490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:14,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:14,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:39:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695763949] [2023-12-02 16:39:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:14,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:39:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:14,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:39:14,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,466 INFO L87 Difference]: Start difference. First operand 702 states and 900 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:14,497 INFO L93 Difference]: Finished difference Result 1890 states and 2470 transitions. [2023-12-02 16:39:14,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:39:14,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-02 16:39:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:14,498 INFO L225 Difference]: With dead ends: 1890 [2023-12-02 16:39:14,498 INFO L226 Difference]: Without dead ends: 1296 [2023-12-02 16:39:14,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,499 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 44 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:14,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 339 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:39:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2023-12-02 16:39:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1230. [2023-12-02 16:39:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 1.292107404393816) internal successors, (1588), 1229 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1588 transitions. [2023-12-02 16:39:14,509 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1588 transitions. Word has length 131 [2023-12-02 16:39:14,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:14,510 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 1588 transitions. [2023-12-02 16:39:14,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1588 transitions. [2023-12-02 16:39:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-02 16:39:14,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:14,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:14,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-02 16:39:14,511 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:14,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:14,511 INFO L85 PathProgramCache]: Analyzing trace with hash -848711929, now seen corresponding path program 1 times [2023-12-02 16:39:14,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:14,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124441775] [2023-12-02 16:39:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:14,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:14,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:14,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124441775] [2023-12-02 16:39:14,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124441775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:14,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:14,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:39:14,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403845277] [2023-12-02 16:39:14,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:14,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:39:14,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:39:14,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,661 INFO L87 Difference]: Start difference. First operand 1230 states and 1588 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:14,701 INFO L93 Difference]: Finished difference Result 3474 states and 4534 transitions. [2023-12-02 16:39:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:39:14,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2023-12-02 16:39:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:14,703 INFO L225 Difference]: With dead ends: 3474 [2023-12-02 16:39:14,703 INFO L226 Difference]: Without dead ends: 2352 [2023-12-02 16:39:14,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:14,705 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 34 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:14,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 339 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:39:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2023-12-02 16:39:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2222. [2023-12-02 16:39:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 1.2913102206213418) internal successors, (2868), 2221 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 2868 transitions. [2023-12-02 16:39:14,728 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 2868 transitions. Word has length 134 [2023-12-02 16:39:14,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:14,728 INFO L495 AbstractCegarLoop]: Abstraction has 2222 states and 2868 transitions. [2023-12-02 16:39:14,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 2868 transitions. [2023-12-02 16:39:14,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 16:39:14,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:14,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:14,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-02 16:39:14,729 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:14,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1371630351, now seen corresponding path program 1 times [2023-12-02 16:39:14,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:14,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718358285] [2023-12-02 16:39:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:14,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:14,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718358285] [2023-12-02 16:39:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718358285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:14,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:14,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 16:39:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649827377] [2023-12-02 16:39:14,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:14,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:39:14,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:39:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:39:14,870 INFO L87 Difference]: Start difference. First operand 2222 states and 2868 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:15,165 INFO L93 Difference]: Finished difference Result 8836 states and 11460 transitions. [2023-12-02 16:39:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:39:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-02 16:39:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:15,169 INFO L225 Difference]: With dead ends: 8836 [2023-12-02 16:39:15,169 INFO L226 Difference]: Without dead ends: 6722 [2023-12-02 16:39:15,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:39:15,171 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1139 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:15,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 2092 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:39:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6722 states. [2023-12-02 16:39:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6722 to 2987. [2023-12-02 16:39:15,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 1.2809778968519758) internal successors, (3825), 2986 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3825 transitions. [2023-12-02 16:39:15,219 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3825 transitions. Word has length 137 [2023-12-02 16:39:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:15,219 INFO L495 AbstractCegarLoop]: Abstraction has 2987 states and 3825 transitions. [2023-12-02 16:39:15,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3825 transitions. [2023-12-02 16:39:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 16:39:15,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:15,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:15,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-02 16:39:15,220 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:15,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:15,220 INFO L85 PathProgramCache]: Analyzing trace with hash -851918415, now seen corresponding path program 1 times [2023-12-02 16:39:15,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224922859] [2023-12-02 16:39:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:15,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:15,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224922859] [2023-12-02 16:39:15,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224922859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:15,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:15,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:39:15,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122483001] [2023-12-02 16:39:15,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:15,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:39:15,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:15,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:39:15,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:15,289 INFO L87 Difference]: Start difference. First operand 2987 states and 3825 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:15,338 INFO L93 Difference]: Finished difference Result 5868 states and 7536 transitions. [2023-12-02 16:39:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:39:15,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-12-02 16:39:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:15,340 INFO L225 Difference]: With dead ends: 5868 [2023-12-02 16:39:15,340 INFO L226 Difference]: Without dead ends: 2989 [2023-12-02 16:39:15,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:15,342 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 35 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:15,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 272 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:39:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2023-12-02 16:39:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2987. [2023-12-02 16:39:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 1.2806430006697924) internal successors, (3824), 2986 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3824 transitions. [2023-12-02 16:39:15,365 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3824 transitions. Word has length 139 [2023-12-02 16:39:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:15,365 INFO L495 AbstractCegarLoop]: Abstraction has 2987 states and 3824 transitions. [2023-12-02 16:39:15,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3824 transitions. [2023-12-02 16:39:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 16:39:15,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:15,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:15,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-02 16:39:15,366 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:15,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:15,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1591658736, now seen corresponding path program 1 times [2023-12-02 16:39:15,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:15,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872380277] [2023-12-02 16:39:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:15,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:15,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:15,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872380277] [2023-12-02 16:39:15,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872380277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:15,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:15,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:39:15,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102080523] [2023-12-02 16:39:15,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:15,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:39:15,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:15,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:39:15,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:15,425 INFO L87 Difference]: Start difference. First operand 2987 states and 3824 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:15,469 INFO L93 Difference]: Finished difference Result 7084 states and 9102 transitions. [2023-12-02 16:39:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:39:15,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-12-02 16:39:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:15,472 INFO L225 Difference]: With dead ends: 7084 [2023-12-02 16:39:15,473 INFO L226 Difference]: Without dead ends: 4205 [2023-12-02 16:39:15,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:15,476 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 92 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:15,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 259 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:39:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2023-12-02 16:39:15,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4203. [2023-12-02 16:39:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4203 states, 4202 states have (on average 1.2753450737743932) internal successors, (5359), 4202 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 5359 transitions. [2023-12-02 16:39:15,519 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 5359 transitions. Word has length 139 [2023-12-02 16:39:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:15,519 INFO L495 AbstractCegarLoop]: Abstraction has 4203 states and 5359 transitions. [2023-12-02 16:39:15,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 5359 transitions. [2023-12-02 16:39:15,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 16:39:15,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:15,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:15,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-02 16:39:15,520 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:15,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:15,520 INFO L85 PathProgramCache]: Analyzing trace with hash -698834510, now seen corresponding path program 1 times [2023-12-02 16:39:15,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:15,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008340749] [2023-12-02 16:39:15,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:15,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:15,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:15,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008340749] [2023-12-02 16:39:15,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008340749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:15,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:15,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:39:15,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147402968] [2023-12-02 16:39:15,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:15,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:39:15,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:15,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:39:15,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:39:15,714 INFO L87 Difference]: Start difference. First operand 4203 states and 5359 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:15,802 INFO L93 Difference]: Finished difference Result 6776 states and 8545 transitions. [2023-12-02 16:39:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:39:15,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2023-12-02 16:39:15,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:15,807 INFO L225 Difference]: With dead ends: 6776 [2023-12-02 16:39:15,807 INFO L226 Difference]: Without dead ends: 6774 [2023-12-02 16:39:15,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:39:15,808 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 221 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:15,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 878 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:39:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6774 states. [2023-12-02 16:39:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6774 to 4395. [2023-12-02 16:39:15,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 1.2487482931269913) internal successors, (5487), 4394 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 5487 transitions. [2023-12-02 16:39:15,852 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 5487 transitions. Word has length 140 [2023-12-02 16:39:15,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:15,852 INFO L495 AbstractCegarLoop]: Abstraction has 4395 states and 5487 transitions. [2023-12-02 16:39:15,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 5487 transitions. [2023-12-02 16:39:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-02 16:39:15,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:15,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:15,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-02 16:39:15,854 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:15,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:15,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1690699411, now seen corresponding path program 1 times [2023-12-02 16:39:15,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:15,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560729561] [2023-12-02 16:39:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:15,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 16:39:16,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:16,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560729561] [2023-12-02 16:39:16,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560729561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:16,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:39:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618656529] [2023-12-02 16:39:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:16,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:39:16,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:39:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:39:16,132 INFO L87 Difference]: Start difference. First operand 4395 states and 5487 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:16,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:16,442 INFO L93 Difference]: Finished difference Result 11078 states and 13854 transitions. [2023-12-02 16:39:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:39:16,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 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 158 [2023-12-02 16:39:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:16,446 INFO L225 Difference]: With dead ends: 11078 [2023-12-02 16:39:16,446 INFO L226 Difference]: Without dead ends: 6785 [2023-12-02 16:39:16,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-12-02 16:39:16,450 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 594 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:16,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 452 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:39:16,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6785 states. [2023-12-02 16:39:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6785 to 4395. [2023-12-02 16:39:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 1.2485207100591715) internal successors, (5486), 4394 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 5486 transitions. [2023-12-02 16:39:16,506 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 5486 transitions. Word has length 158 [2023-12-02 16:39:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:16,506 INFO L495 AbstractCegarLoop]: Abstraction has 4395 states and 5486 transitions. [2023-12-02 16:39:16,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 5486 transitions. [2023-12-02 16:39:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-02 16:39:16,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:16,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-12-02 16:39:16,508 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:16,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash -597200351, now seen corresponding path program 1 times [2023-12-02 16:39:16,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:16,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780641602] [2023-12-02 16:39:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 16:39:18,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:18,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780641602] [2023-12-02 16:39:18,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780641602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:18,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:18,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2023-12-02 16:39:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470899394] [2023-12-02 16:39:18,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:18,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 16:39:18,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 16:39:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2023-12-02 16:39:18,410 INFO L87 Difference]: Start difference. First operand 4395 states and 5486 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:23,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:23,508 INFO L93 Difference]: Finished difference Result 16930 states and 21246 transitions. [2023-12-02 16:39:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 16:39:23,509 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 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 160 [2023-12-02 16:39:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:23,516 INFO L225 Difference]: With dead ends: 16930 [2023-12-02 16:39:23,517 INFO L226 Difference]: Without dead ends: 12636 [2023-12-02 16:39:23,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=486, Invalid=2706, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 16:39:23,521 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1769 mSDsluCounter, 9738 mSDsCounter, 0 mSdLazyCounter, 5156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 10323 SdHoareTripleChecker+Invalid, 5156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:23,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 10323 Invalid, 5156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5156 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 16:39:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12636 states. [2023-12-02 16:39:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12636 to 4420. [2023-12-02 16:39:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 1.248019914007694) internal successors, (5515), 4419 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5515 transitions. [2023-12-02 16:39:23,587 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5515 transitions. Word has length 160 [2023-12-02 16:39:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:23,587 INFO L495 AbstractCegarLoop]: Abstraction has 4420 states and 5515 transitions. [2023-12-02 16:39:23,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5515 transitions. [2023-12-02 16:39:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-02 16:39:23,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:23,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:23,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-12-02 16:39:23,588 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2023-12-02 16:39:23,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:23,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1980844965, now seen corresponding path program 1 times [2023-12-02 16:39:23,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:23,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463221357] [2023-12-02 16:39:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:23,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:39:34,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:34,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463221357] [2023-12-02 16:39:34,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463221357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:39:34,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912298783] [2023-12-02 16:39:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:34,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:39:34,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:39:34,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:39:34,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d39a34-1e2b-4dff-a4dd-3df939dd524d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:39:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:35,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 120 conjunts are in the unsatisfiable core [2023-12-02 16:39:35,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:40:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:40:15,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:45:36,753 WARN L293 SmtUtils]: Spent 6.63s on a formula simplification that was a NOOP. DAG size: 513 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:46:50,526 WARN L293 SmtUtils]: Spent 6.89s on a formula simplification that was a NOOP. DAG size: 513 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)