/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 03:12:19,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:12:19,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:12:19,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:12:19,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:12:19,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:12:19,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:12:19,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:12:19,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:12:19,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:12:19,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:12:19,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-03 03:12:19,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:12:19,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:12:19,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:12:19,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 03:12:19,587 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:12:19,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:12:19,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:12:19,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:12:19,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:12:19,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:12:19,589 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:12:19,589 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:12:19,589 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:12:19,589 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:12:19,590 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:12:19,590 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:12:19,590 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:12:19,590 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:12:19,590 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:12:19,590 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:12:19,590 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:12:19,591 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:12:19,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:12:19,591 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:12:19,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:12:19,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:12:19,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:12:19,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:12:19,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:12:19,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:12:19,592 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:12:19,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:12:19,592 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:12:19,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:12:19,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:12:19,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:12:19,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:12:19,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:12:19,593 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:12:19,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:12:19,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:12:19,593 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:12:19,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:12:19,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:12:19,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:12:19,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:12:19,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:12:19,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:12:19,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:12:19,838 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:12:19,839 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:12:19,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:12:20,946 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:12:21,334 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:12:21,334 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:12:21,357 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3009f0cac/f587d838d06f48c7ab35e0c71704cafd/FLAG7c62781ad [2023-04-03 03:12:21,369 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3009f0cac/f587d838d06f48c7ab35e0c71704cafd [2023-04-03 03:12:21,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:12:21,373 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:12:21,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:12:21,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:12:21,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:12:21,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:12:21" (1/1) ... [2023-04-03 03:12:21,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d5c44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:21, skipping insertion in model container [2023-04-03 03:12:21,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:12:21" (1/1) ... [2023-04-03 03:12:21,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:12:21,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:12:21,859 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13533,13546] [2023-04-03 03:12:21,897 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18033,18046] [2023-04-03 03:12:21,904 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19325,19338] [2023-04-03 03:12:21,909 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20083,20096] [2023-04-03 03:12:21,922 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21703,21716] [2023-04-03 03:12:21,926 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22461,22474] [2023-04-03 03:12:21,934 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23547,23560] [2023-04-03 03:12:21,973 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26086,26099] [2023-04-03 03:12:21,978 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26847,26860] [2023-04-03 03:12:21,983 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27936,27949] [2023-04-03 03:12:21,994 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29941,29954] [2023-04-03 03:12:22,010 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33864,33877] [2023-04-03 03:12:22,014 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34625,34638] [2023-04-03 03:12:22,019 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35718,35731] [2023-04-03 03:12:22,028 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37727,37740] [2023-04-03 03:12:22,042 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41330,41343] [2023-04-03 03:12:22,075 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48207,48220] [2023-04-03 03:12:22,079 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48968,48981] [2023-04-03 03:12:22,084 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50057,50070] [2023-04-03 03:12:22,108 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52062,52075] [2023-04-03 03:12:22,132 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55451,55464] [2023-04-03 03:12:22,168 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61148,61161] [2023-04-03 03:12:22,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:12:22,476 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:12:22,539 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13533,13546] [2023-04-03 03:12:22,549 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18033,18046] [2023-04-03 03:12:22,553 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19325,19338] [2023-04-03 03:12:22,557 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20083,20096] [2023-04-03 03:12:22,562 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21703,21716] [2023-04-03 03:12:22,565 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22461,22474] [2023-04-03 03:12:22,569 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23547,23560] [2023-04-03 03:12:22,576 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26086,26099] [2023-04-03 03:12:22,579 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26847,26860] [2023-04-03 03:12:22,583 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27936,27949] [2023-04-03 03:12:22,589 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29941,29954] [2023-04-03 03:12:22,600 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33864,33877] [2023-04-03 03:12:22,603 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34625,34638] [2023-04-03 03:12:22,607 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35718,35731] [2023-04-03 03:12:22,613 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37727,37740] [2023-04-03 03:12:22,623 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41330,41343] [2023-04-03 03:12:22,644 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48207,48220] [2023-04-03 03:12:22,648 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48968,48981] [2023-04-03 03:12:22,651 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50057,50070] [2023-04-03 03:12:22,657 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52062,52075] [2023-04-03 03:12:22,670 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55451,55464] [2023-04-03 03:12:22,688 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61148,61161] [2023-04-03 03:12:22,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:12:22,891 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:12:22,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22 WrapperNode [2023-04-03 03:12:22,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:12:22,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:12:22,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:12:22,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:12:22,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (1/1) ... [2023-04-03 03:12:22,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (1/1) ... [2023-04-03 03:12:22,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (1/1) ... [2023-04-03 03:12:22,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (1/1) ... [2023-04-03 03:12:23,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (1/1) ... [2023-04-03 03:12:23,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (1/1) ... [2023-04-03 03:12:23,043 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (1/1) ... [2023-04-03 03:12:23,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (1/1) ... [2023-04-03 03:12:23,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:12:23,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:12:23,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:12:23,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:12:23,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (1/1) ... [2023-04-03 03:12:23,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:12:23,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:12:23,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 03:12:23,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 03:12:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:12:23,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:12:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:12:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 03:12:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:12:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:12:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:12:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:12:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:12:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:12:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 03:12:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 03:12:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 03:12:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 03:12:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 03:12:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 03:12:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 03:12:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:12:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:12:23,533 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:12:23,535 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:12:25,904 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:12:26,070 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:12:26,071 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 03:12:26,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:12:26 BoogieIcfgContainer [2023-04-03 03:12:26,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:12:26,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:12:26,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:12:26,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:12:26,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:12:21" (1/3) ... [2023-04-03 03:12:26,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6b66ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:12:26, skipping insertion in model container [2023-04-03 03:12:26,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:12:22" (2/3) ... [2023-04-03 03:12:26,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6b66ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:12:26, skipping insertion in model container [2023-04-03 03:12:26,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:12:26" (3/3) ... [2023-04-03 03:12:26,081 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:12:26,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:12:26,097 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-04-03 03:12:26,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:12:26,157 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fbc9d78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:12:26,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-04-03 03:12:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 1094 states, 1066 states have (on average 1.8639774859287055) internal successors, (1987), 1089 states have internal predecessors, (1987), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 03:12:26,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 03:12:26,186 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:26,186 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] [2023-04-03 03:12:26,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:26,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:26,191 INFO L85 PathProgramCache]: Analyzing trace with hash 163065747, now seen corresponding path program 1 times [2023-04-03 03:12:26,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:26,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525240147] [2023-04-03 03:12:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:26,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:26,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:26,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525240147] [2023-04-03 03:12:26,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525240147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:26,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:26,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:12:26,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069604786] [2023-04-03 03:12:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:26,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:12:26,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:26,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:12:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:12:26,925 INFO L87 Difference]: Start difference. First operand has 1094 states, 1066 states have (on average 1.8639774859287055) internal successors, (1987), 1089 states have internal predecessors, (1987), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:27,792 INFO L93 Difference]: Finished difference Result 1641 states and 2883 transitions. [2023-04-03 03:12:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:12:27,795 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2023-04-03 03:12:27,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:27,809 INFO L225 Difference]: With dead ends: 1641 [2023-04-03 03:12:27,809 INFO L226 Difference]: Without dead ends: 839 [2023-04-03 03:12:27,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:12:27,818 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 4308 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:27,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4308 Valid, 1020 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:12:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-04-03 03:12:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2023-04-03 03:12:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 814 states have (on average 1.300982800982801) internal successors, (1059), 835 states have internal predecessors, (1059), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1062 transitions. [2023-04-03 03:12:27,901 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1062 transitions. Word has length 88 [2023-04-03 03:12:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:27,901 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1062 transitions. [2023-04-03 03:12:27,901 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1062 transitions. [2023-04-03 03:12:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-03 03:12:27,905 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:27,905 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] [2023-04-03 03:12:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:12:27,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:27,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1903552170, now seen corresponding path program 1 times [2023-04-03 03:12:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:27,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563057844] [2023-04-03 03:12:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:28,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:28,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563057844] [2023-04-03 03:12:28,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563057844] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:28,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:28,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:12:28,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398411713] [2023-04-03 03:12:28,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:28,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:12:28,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:28,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:12:28,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:12:28,202 INFO L87 Difference]: Start difference. First operand 839 states and 1062 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:28,641 INFO L93 Difference]: Finished difference Result 1373 states and 1788 transitions. [2023-04-03 03:12:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:12:28,642 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2023-04-03 03:12:28,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:28,646 INFO L225 Difference]: With dead ends: 1373 [2023-04-03 03:12:28,646 INFO L226 Difference]: Without dead ends: 717 [2023-04-03 03:12:28,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:12:28,653 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 2682 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:28,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2682 Valid, 542 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:12:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-04-03 03:12:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2023-04-03 03:12:28,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 692 states have (on average 1.329479768786127) internal successors, (920), 713 states have internal predecessors, (920), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 923 transitions. [2023-04-03 03:12:28,724 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 923 transitions. Word has length 89 [2023-04-03 03:12:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:28,726 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 923 transitions. [2023-04-03 03:12:28,726 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:28,726 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 923 transitions. [2023-04-03 03:12:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-03 03:12:28,730 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:28,730 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] [2023-04-03 03:12:28,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:12:28,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:28,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash -841936591, now seen corresponding path program 1 times [2023-04-03 03:12:28,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:28,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226834454] [2023-04-03 03:12:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:28,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:28,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:28,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226834454] [2023-04-03 03:12:28,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226834454] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:28,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:28,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:12:28,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770047414] [2023-04-03 03:12:28,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:28,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:12:28,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:28,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:12:28,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:12:28,986 INFO L87 Difference]: Start difference. First operand 717 states and 923 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:29,410 INFO L93 Difference]: Finished difference Result 1251 states and 1648 transitions. [2023-04-03 03:12:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:12:29,411 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2023-04-03 03:12:29,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:29,414 INFO L225 Difference]: With dead ends: 1251 [2023-04-03 03:12:29,414 INFO L226 Difference]: Without dead ends: 659 [2023-04-03 03:12:29,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:12:29,419 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2466 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:29,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 492 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:12:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-04-03 03:12:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2023-04-03 03:12:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 634 states have (on average 1.3454258675078865) internal successors, (853), 655 states have internal predecessors, (853), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 856 transitions. [2023-04-03 03:12:29,460 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 856 transitions. Word has length 90 [2023-04-03 03:12:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:29,461 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 856 transitions. [2023-04-03 03:12:29,461 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 856 transitions. [2023-04-03 03:12:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-03 03:12:29,463 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:29,463 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] [2023-04-03 03:12:29,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:12:29,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:29,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:29,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1669770124, now seen corresponding path program 1 times [2023-04-03 03:12:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:29,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426134623] [2023-04-03 03:12:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:29,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:29,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426134623] [2023-04-03 03:12:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426134623] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:29,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:29,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:12:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479182581] [2023-04-03 03:12:29,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:29,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:12:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:12:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:12:29,727 INFO L87 Difference]: Start difference. First operand 659 states and 856 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:30,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:30,168 INFO L93 Difference]: Finished difference Result 1193 states and 1580 transitions. [2023-04-03 03:12:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:12:30,169 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2023-04-03 03:12:30,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:30,172 INFO L225 Difference]: With dead ends: 1193 [2023-04-03 03:12:30,172 INFO L226 Difference]: Without dead ends: 633 [2023-04-03 03:12:30,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:12:30,175 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 2354 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:30,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2354 Valid, 454 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:12:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-04-03 03:12:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2023-04-03 03:12:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 608 states have (on average 1.3519736842105263) internal successors, (822), 629 states have internal predecessors, (822), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 825 transitions. [2023-04-03 03:12:30,212 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 825 transitions. Word has length 91 [2023-04-03 03:12:30,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:30,212 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 825 transitions. [2023-04-03 03:12:30,212 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 825 transitions. [2023-04-03 03:12:30,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-03 03:12:30,218 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:30,218 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] [2023-04-03 03:12:30,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:12:30,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:30,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 391702095, now seen corresponding path program 1 times [2023-04-03 03:12:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:30,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308689311] [2023-04-03 03:12:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:30,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:30,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:30,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308689311] [2023-04-03 03:12:30,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308689311] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:30,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:30,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:12:30,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606584507] [2023-04-03 03:12:30,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:30,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:12:30,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:12:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:12:30,438 INFO L87 Difference]: Start difference. First operand 633 states and 825 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:30,960 INFO L93 Difference]: Finished difference Result 1167 states and 1548 transitions. [2023-04-03 03:12:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:12:30,961 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2023-04-03 03:12:30,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:30,963 INFO L225 Difference]: With dead ends: 1167 [2023-04-03 03:12:30,963 INFO L226 Difference]: Without dead ends: 623 [2023-04-03 03:12:30,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:12:30,964 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 2288 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:30,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 402 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:12:30,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-04-03 03:12:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2023-04-03 03:12:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 598 states have (on average 1.3528428093645486) internal successors, (809), 619 states have internal predecessors, (809), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 812 transitions. [2023-04-03 03:12:31,001 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 812 transitions. Word has length 92 [2023-04-03 03:12:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:31,001 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 812 transitions. [2023-04-03 03:12:31,001 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 812 transitions. [2023-04-03 03:12:31,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-03 03:12:31,003 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:31,003 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] [2023-04-03 03:12:31,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:12:31,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:31,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1339790450, now seen corresponding path program 1 times [2023-04-03 03:12:31,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:31,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956777045] [2023-04-03 03:12:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:31,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:31,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:31,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956777045] [2023-04-03 03:12:31,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956777045] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:31,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:31,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:12:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043045111] [2023-04-03 03:12:31,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:31,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:12:31,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:12:31,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:12:31,173 INFO L87 Difference]: Start difference. First operand 623 states and 812 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:31,796 INFO L93 Difference]: Finished difference Result 1476 states and 1953 transitions. [2023-04-03 03:12:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:12:31,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2023-04-03 03:12:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:31,800 INFO L225 Difference]: With dead ends: 1476 [2023-04-03 03:12:31,800 INFO L226 Difference]: Without dead ends: 922 [2023-04-03 03:12:31,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:12:31,802 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 3064 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:31,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3064 Valid, 696 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:12:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2023-04-03 03:12:31,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 842. [2023-04-03 03:12:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.394124847001224) internal successors, (1139), 838 states have internal predecessors, (1139), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1142 transitions. [2023-04-03 03:12:31,910 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1142 transitions. Word has length 93 [2023-04-03 03:12:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:31,911 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1142 transitions. [2023-04-03 03:12:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1142 transitions. [2023-04-03 03:12:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:12:31,913 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:31,913 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] [2023-04-03 03:12:31,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:12:31,913 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:31,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:31,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1405351187, now seen corresponding path program 1 times [2023-04-03 03:12:31,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:31,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805145406] [2023-04-03 03:12:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:31,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:32,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805145406] [2023-04-03 03:12:32,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805145406] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:32,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:32,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:12:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711441385] [2023-04-03 03:12:32,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:32,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:12:32,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:12:32,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:12:32,449 INFO L87 Difference]: Start difference. First operand 842 states and 1142 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:33,345 INFO L93 Difference]: Finished difference Result 1470 states and 1912 transitions. [2023-04-03 03:12:33,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 03:12:33,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-04-03 03:12:33,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:33,350 INFO L225 Difference]: With dead ends: 1470 [2023-04-03 03:12:33,350 INFO L226 Difference]: Without dead ends: 1107 [2023-04-03 03:12:33,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-03 03:12:33,351 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 4421 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4421 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:33,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4421 Valid, 931 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:12:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2023-04-03 03:12:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 842. [2023-04-03 03:12:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3929008567931456) internal successors, (1138), 838 states have internal predecessors, (1138), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1141 transitions. [2023-04-03 03:12:33,428 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1141 transitions. Word has length 94 [2023-04-03 03:12:33,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:33,428 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1141 transitions. [2023-04-03 03:12:33,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:33,428 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1141 transitions. [2023-04-03 03:12:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:12:33,430 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:33,430 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] [2023-04-03 03:12:33,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:12:33,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:33,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash -159945519, now seen corresponding path program 1 times [2023-04-03 03:12:33,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:33,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385832928] [2023-04-03 03:12:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:33,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:33,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385832928] [2023-04-03 03:12:33,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385832928] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:33,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:33,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:33,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332769599] [2023-04-03 03:12:33,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:33,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:33,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:33,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:33,834 INFO L87 Difference]: Start difference. First operand 842 states and 1141 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:35,118 INFO L93 Difference]: Finished difference Result 1590 states and 2142 transitions. [2023-04-03 03:12:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-04-03 03:12:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:35,124 INFO L225 Difference]: With dead ends: 1590 [2023-04-03 03:12:35,124 INFO L226 Difference]: Without dead ends: 1473 [2023-04-03 03:12:35,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:12:35,126 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 3411 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:35,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3411 Valid, 2002 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:12:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2023-04-03 03:12:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2023-04-03 03:12:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3916768665850674) internal successors, (1137), 838 states have internal predecessors, (1137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1140 transitions. [2023-04-03 03:12:35,229 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1140 transitions. Word has length 94 [2023-04-03 03:12:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:35,229 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1140 transitions. [2023-04-03 03:12:35,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1140 transitions. [2023-04-03 03:12:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:12:35,232 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:35,232 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] [2023-04-03 03:12:35,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:12:35,232 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:35,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:35,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1184579395, now seen corresponding path program 1 times [2023-04-03 03:12:35,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:35,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161845790] [2023-04-03 03:12:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:35,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:35,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:35,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161845790] [2023-04-03 03:12:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161845790] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:12:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333147103] [2023-04-03 03:12:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:35,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:12:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:12:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:12:35,922 INFO L87 Difference]: Start difference. First operand 842 states and 1140 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:37,686 INFO L93 Difference]: Finished difference Result 1640 states and 2204 transitions. [2023-04-03 03:12:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:12:37,687 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-04-03 03:12:37,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:37,692 INFO L225 Difference]: With dead ends: 1640 [2023-04-03 03:12:37,692 INFO L226 Difference]: Without dead ends: 1523 [2023-04-03 03:12:37,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:12:37,697 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 3448 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3448 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:37,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3448 Valid, 2816 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2529 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:12:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2023-04-03 03:12:37,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 849. [2023-04-03 03:12:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 824 states have (on average 1.391990291262136) internal successors, (1147), 845 states have internal predecessors, (1147), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1150 transitions. [2023-04-03 03:12:37,800 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1150 transitions. Word has length 94 [2023-04-03 03:12:37,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:37,800 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1150 transitions. [2023-04-03 03:12:37,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1150 transitions. [2023-04-03 03:12:37,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:12:37,802 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:37,802 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] [2023-04-03 03:12:37,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:12:37,803 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:37,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:37,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1535212465, now seen corresponding path program 1 times [2023-04-03 03:12:37,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:37,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125354815] [2023-04-03 03:12:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:37,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:38,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:38,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125354815] [2023-04-03 03:12:38,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125354815] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:38,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:38,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:38,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809221760] [2023-04-03 03:12:38,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:38,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:38,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:38,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:38,199 INFO L87 Difference]: Start difference. First operand 849 states and 1150 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:39,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:39,253 INFO L93 Difference]: Finished difference Result 1148 states and 1549 transitions. [2023-04-03 03:12:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:39,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-04-03 03:12:39,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:39,257 INFO L225 Difference]: With dead ends: 1148 [2023-04-03 03:12:39,257 INFO L226 Difference]: Without dead ends: 942 [2023-04-03 03:12:39,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:12:39,259 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1638 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:39,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 1871 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:12:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-04-03 03:12:39,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 842. [2023-04-03 03:12:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.390452876376989) internal successors, (1136), 838 states have internal predecessors, (1136), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1139 transitions. [2023-04-03 03:12:39,359 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1139 transitions. Word has length 94 [2023-04-03 03:12:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:39,359 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1139 transitions. [2023-04-03 03:12:39,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1139 transitions. [2023-04-03 03:12:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:12:39,362 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:39,362 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] [2023-04-03 03:12:39,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 03:12:39,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:39,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:39,362 INFO L85 PathProgramCache]: Analyzing trace with hash -840723435, now seen corresponding path program 1 times [2023-04-03 03:12:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:39,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653983679] [2023-04-03 03:12:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:39,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:39,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653983679] [2023-04-03 03:12:39,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653983679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:39,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:39,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:39,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593708506] [2023-04-03 03:12:39,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:39,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:39,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:39,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:39,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:39,835 INFO L87 Difference]: Start difference. First operand 842 states and 1139 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:41,326 INFO L93 Difference]: Finished difference Result 1687 states and 2280 transitions. [2023-04-03 03:12:41,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:41,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-03 03:12:41,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:41,337 INFO L225 Difference]: With dead ends: 1687 [2023-04-03 03:12:41,337 INFO L226 Difference]: Without dead ends: 1497 [2023-04-03 03:12:41,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:12:41,339 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 4078 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4078 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:41,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4078 Valid, 2363 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:12:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-04-03 03:12:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2023-04-03 03:12:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3880048959608322) internal successors, (1134), 838 states have internal predecessors, (1134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1137 transitions. [2023-04-03 03:12:41,451 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1137 transitions. Word has length 96 [2023-04-03 03:12:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:41,451 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1137 transitions. [2023-04-03 03:12:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1137 transitions. [2023-04-03 03:12:41,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:12:41,453 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:41,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:12:41,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 03:12:41,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:41,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1067075347, now seen corresponding path program 1 times [2023-04-03 03:12:41,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:41,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877247848] [2023-04-03 03:12:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:41,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:41,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877247848] [2023-04-03 03:12:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877247848] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:41,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:41,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:41,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785491263] [2023-04-03 03:12:41,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:41,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:41,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:41,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:41,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:41,862 INFO L87 Difference]: Start difference. First operand 842 states and 1137 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:43,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:43,152 INFO L93 Difference]: Finished difference Result 1609 states and 2165 transitions. [2023-04-03 03:12:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:43,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-03 03:12:43,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:43,158 INFO L225 Difference]: With dead ends: 1609 [2023-04-03 03:12:43,158 INFO L226 Difference]: Without dead ends: 1473 [2023-04-03 03:12:43,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:12:43,160 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 4165 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4165 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:43,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4165 Valid, 2197 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:12:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2023-04-03 03:12:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2023-04-03 03:12:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3855569155446756) internal successors, (1132), 838 states have internal predecessors, (1132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1135 transitions. [2023-04-03 03:12:43,309 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1135 transitions. Word has length 96 [2023-04-03 03:12:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:43,310 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1135 transitions. [2023-04-03 03:12:43,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1135 transitions. [2023-04-03 03:12:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:12:43,312 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:43,312 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] [2023-04-03 03:12:43,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 03:12:43,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:43,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash -280583389, now seen corresponding path program 1 times [2023-04-03 03:12:43,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:43,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905568122] [2023-04-03 03:12:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:43,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:43,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905568122] [2023-04-03 03:12:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905568122] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:43,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:43,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 03:12:43,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312985679] [2023-04-03 03:12:43,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:43,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 03:12:43,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:43,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 03:12:43,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:12:43,923 INFO L87 Difference]: Start difference. First operand 842 states and 1135 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:45,647 INFO L93 Difference]: Finished difference Result 1350 states and 1818 transitions. [2023-04-03 03:12:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 03:12:45,647 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-03 03:12:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:45,651 INFO L225 Difference]: With dead ends: 1350 [2023-04-03 03:12:45,651 INFO L226 Difference]: Without dead ends: 1004 [2023-04-03 03:12:45,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2023-04-03 03:12:45,653 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 3499 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3499 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:45,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3499 Valid, 2861 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:12:45,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-04-03 03:12:45,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 842. [2023-04-03 03:12:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.383108935128519) internal successors, (1130), 838 states have internal predecessors, (1130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1133 transitions. [2023-04-03 03:12:45,781 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1133 transitions. Word has length 96 [2023-04-03 03:12:45,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:45,781 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1133 transitions. [2023-04-03 03:12:45,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1133 transitions. [2023-04-03 03:12:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:12:45,784 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:45,784 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] [2023-04-03 03:12:45,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 03:12:45,784 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:45,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1262393216, now seen corresponding path program 1 times [2023-04-03 03:12:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362117707] [2023-04-03 03:12:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:46,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:46,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362117707] [2023-04-03 03:12:46,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362117707] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:46,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:46,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:46,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845678384] [2023-04-03 03:12:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:46,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:46,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:46,206 INFO L87 Difference]: Start difference. First operand 842 states and 1133 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:47,595 INFO L93 Difference]: Finished difference Result 1584 states and 2128 transitions. [2023-04-03 03:12:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:47,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-03 03:12:47,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:47,601 INFO L225 Difference]: With dead ends: 1584 [2023-04-03 03:12:47,601 INFO L226 Difference]: Without dead ends: 1473 [2023-04-03 03:12:47,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:12:47,602 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3154 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3154 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:47,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3154 Valid, 2180 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:12:47,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2023-04-03 03:12:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2023-04-03 03:12:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3818849449204407) internal successors, (1129), 838 states have internal predecessors, (1129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1132 transitions. [2023-04-03 03:12:47,726 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1132 transitions. Word has length 96 [2023-04-03 03:12:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:47,726 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1132 transitions. [2023-04-03 03:12:47,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1132 transitions. [2023-04-03 03:12:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:12:47,728 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:47,729 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] [2023-04-03 03:12:47,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 03:12:47,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:47,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:47,729 INFO L85 PathProgramCache]: Analyzing trace with hash -552206747, now seen corresponding path program 1 times [2023-04-03 03:12:47,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:47,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106279241] [2023-04-03 03:12:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:47,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:48,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:48,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106279241] [2023-04-03 03:12:48,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106279241] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:48,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:48,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:48,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615473816] [2023-04-03 03:12:48,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:48,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:48,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:48,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:48,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:48,203 INFO L87 Difference]: Start difference. First operand 842 states and 1132 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:49,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:49,675 INFO L93 Difference]: Finished difference Result 1638 states and 2208 transitions. [2023-04-03 03:12:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:49,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-03 03:12:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:49,680 INFO L225 Difference]: With dead ends: 1638 [2023-04-03 03:12:49,680 INFO L226 Difference]: Without dead ends: 1497 [2023-04-03 03:12:49,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:12:49,681 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 3450 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3450 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:49,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3450 Valid, 2832 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:12:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-04-03 03:12:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2023-04-03 03:12:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3806609547123623) internal successors, (1128), 838 states have internal predecessors, (1128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1131 transitions. [2023-04-03 03:12:49,834 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1131 transitions. Word has length 96 [2023-04-03 03:12:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:49,834 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1131 transitions. [2023-04-03 03:12:49,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1131 transitions. [2023-04-03 03:12:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:12:49,836 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:49,836 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] [2023-04-03 03:12:49,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 03:12:49,838 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:49,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1054149209, now seen corresponding path program 1 times [2023-04-03 03:12:49,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:49,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427927199] [2023-04-03 03:12:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:50,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427927199] [2023-04-03 03:12:50,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427927199] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:50,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:50,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:50,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211472864] [2023-04-03 03:12:50,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:50,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:50,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:50,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:50,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:50,202 INFO L87 Difference]: Start difference. First operand 842 states and 1131 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:51,525 INFO L93 Difference]: Finished difference Result 1590 states and 2132 transitions. [2023-04-03 03:12:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:51,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-03 03:12:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:51,530 INFO L225 Difference]: With dead ends: 1590 [2023-04-03 03:12:51,530 INFO L226 Difference]: Without dead ends: 1473 [2023-04-03 03:12:51,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:12:51,532 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 2949 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2949 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:51,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2949 Valid, 2339 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:12:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2023-04-03 03:12:51,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2023-04-03 03:12:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3794369645042839) internal successors, (1127), 838 states have internal predecessors, (1127), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1130 transitions. [2023-04-03 03:12:51,698 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1130 transitions. Word has length 96 [2023-04-03 03:12:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:51,698 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1130 transitions. [2023-04-03 03:12:51,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1130 transitions. [2023-04-03 03:12:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:12:51,700 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:51,700 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] [2023-04-03 03:12:51,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 03:12:51,701 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:51,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash -703516139, now seen corresponding path program 1 times [2023-04-03 03:12:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:51,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982907654] [2023-04-03 03:12:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:51,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:52,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982907654] [2023-04-03 03:12:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982907654] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:52,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322722646] [2023-04-03 03:12:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:52,045 INFO L87 Difference]: Start difference. First operand 842 states and 1130 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:53,402 INFO L93 Difference]: Finished difference Result 1599 states and 2139 transitions. [2023-04-03 03:12:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:53,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-03 03:12:53,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:53,408 INFO L225 Difference]: With dead ends: 1599 [2023-04-03 03:12:53,408 INFO L226 Difference]: Without dead ends: 1473 [2023-04-03 03:12:53,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:12:53,409 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 3190 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3190 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:53,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3190 Valid, 2232 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:12:53,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2023-04-03 03:12:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2023-04-03 03:12:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3782129742962057) internal successors, (1126), 838 states have internal predecessors, (1126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1129 transitions. [2023-04-03 03:12:53,562 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1129 transitions. Word has length 96 [2023-04-03 03:12:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:53,563 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1129 transitions. [2023-04-03 03:12:53,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1129 transitions. [2023-04-03 03:12:53,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:12:53,564 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:53,565 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] [2023-04-03 03:12:53,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 03:12:53,565 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:53,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:53,566 INFO L85 PathProgramCache]: Analyzing trace with hash -574065394, now seen corresponding path program 1 times [2023-04-03 03:12:53,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:53,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681330381] [2023-04-03 03:12:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:53,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:53,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:53,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681330381] [2023-04-03 03:12:53,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681330381] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:53,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:53,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851023963] [2023-04-03 03:12:53,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:53,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:53,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:53,951 INFO L87 Difference]: Start difference. First operand 842 states and 1129 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:55,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:55,481 INFO L93 Difference]: Finished difference Result 1653 states and 2218 transitions. [2023-04-03 03:12:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:55,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-03 03:12:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:55,486 INFO L225 Difference]: With dead ends: 1653 [2023-04-03 03:12:55,486 INFO L226 Difference]: Without dead ends: 1497 [2023-04-03 03:12:55,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:12:55,487 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 3386 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:55,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3386 Valid, 2780 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:12:55,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-04-03 03:12:55,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2023-04-03 03:12:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3769889840881273) internal successors, (1125), 838 states have internal predecessors, (1125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1128 transitions. [2023-04-03 03:12:55,653 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1128 transitions. Word has length 96 [2023-04-03 03:12:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:55,653 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1128 transitions. [2023-04-03 03:12:55,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1128 transitions. [2023-04-03 03:12:55,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:12:55,655 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:55,655 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] [2023-04-03 03:12:55,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 03:12:55,655 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:55,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:55,656 INFO L85 PathProgramCache]: Analyzing trace with hash -176150049, now seen corresponding path program 1 times [2023-04-03 03:12:55,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:55,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476928580] [2023-04-03 03:12:55,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:55,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:56,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:56,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476928580] [2023-04-03 03:12:56,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476928580] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:56,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:56,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:56,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824776556] [2023-04-03 03:12:56,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:56,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:56,133 INFO L87 Difference]: Start difference. First operand 842 states and 1128 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:57,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:57,484 INFO L93 Difference]: Finished difference Result 1563 states and 2083 transitions. [2023-04-03 03:12:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:57,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:12:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:57,489 INFO L225 Difference]: With dead ends: 1563 [2023-04-03 03:12:57,489 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:12:57,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:12:57,490 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 3870 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3870 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:57,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3870 Valid, 2328 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:12:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:12:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:12:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3745410036719705) internal successors, (1123), 838 states have internal predecessors, (1123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1126 transitions. [2023-04-03 03:12:57,659 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1126 transitions. Word has length 98 [2023-04-03 03:12:57,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:57,659 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1126 transitions. [2023-04-03 03:12:57,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:57,659 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1126 transitions. [2023-04-03 03:12:57,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:12:57,661 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:57,661 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] [2023-04-03 03:12:57,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 03:12:57,661 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:57,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:57,662 INFO L85 PathProgramCache]: Analyzing trace with hash -305600794, now seen corresponding path program 1 times [2023-04-03 03:12:57,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:57,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111415806] [2023-04-03 03:12:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:58,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111415806] [2023-04-03 03:12:58,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111415806] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:58,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:58,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:58,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955086899] [2023-04-03 03:12:58,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:58,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:58,009 INFO L87 Difference]: Start difference. First operand 842 states and 1126 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:12:59,341 INFO L93 Difference]: Finished difference Result 1621 states and 2167 transitions. [2023-04-03 03:12:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:12:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:12:59,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:12:59,345 INFO L225 Difference]: With dead ends: 1621 [2023-04-03 03:12:59,345 INFO L226 Difference]: Without dead ends: 1473 [2023-04-03 03:12:59,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:12:59,346 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 2825 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:12:59,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2825 Valid, 2520 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:12:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2023-04-03 03:12:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2023-04-03 03:12:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.372093023255814) internal successors, (1121), 838 states have internal predecessors, (1121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1124 transitions. [2023-04-03 03:12:59,529 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1124 transitions. Word has length 98 [2023-04-03 03:12:59,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:12:59,529 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1124 transitions. [2023-04-03 03:12:59,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:12:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1124 transitions. [2023-04-03 03:12:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:12:59,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:12:59,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:12:59,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 03:12:59,531 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:12:59,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:12:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash -904132493, now seen corresponding path program 1 times [2023-04-03 03:12:59,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:12:59,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126122308] [2023-04-03 03:12:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:12:59,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:12:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:12:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:12:59,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:12:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126122308] [2023-04-03 03:12:59,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126122308] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:12:59,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:12:59,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:12:59,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617403251] [2023-04-03 03:12:59,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:12:59,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:12:59,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:12:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:12:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:12:59,926 INFO L87 Difference]: Start difference. First operand 842 states and 1124 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:01,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:01,224 INFO L93 Difference]: Finished difference Result 1629 states and 2171 transitions. [2023-04-03 03:13:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:01,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:01,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:01,228 INFO L225 Difference]: With dead ends: 1629 [2023-04-03 03:13:01,228 INFO L226 Difference]: Without dead ends: 1473 [2023-04-03 03:13:01,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:13:01,234 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 3067 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:01,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3067 Valid, 2444 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:13:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2023-04-03 03:13:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2023-04-03 03:13:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3696450428396574) internal successors, (1119), 838 states have internal predecessors, (1119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1122 transitions. [2023-04-03 03:13:01,416 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1122 transitions. Word has length 98 [2023-04-03 03:13:01,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:01,416 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1122 transitions. [2023-04-03 03:13:01,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1122 transitions. [2023-04-03 03:13:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:01,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:01,418 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] [2023-04-03 03:13:01,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 03:13:01,419 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:01,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1311046285, now seen corresponding path program 1 times [2023-04-03 03:13:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085128228] [2023-04-03 03:13:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:01,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:01,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085128228] [2023-04-03 03:13:01,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085128228] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:01,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:01,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:01,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546360259] [2023-04-03 03:13:01,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:01,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:01,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:01,798 INFO L87 Difference]: Start difference. First operand 842 states and 1122 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:03,209 INFO L93 Difference]: Finished difference Result 1719 states and 2291 transitions. [2023-04-03 03:13:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:03,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:03,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:03,215 INFO L225 Difference]: With dead ends: 1719 [2023-04-03 03:13:03,216 INFO L226 Difference]: Without dead ends: 1497 [2023-04-03 03:13:03,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:13:03,217 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 2658 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:03,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2658 Valid, 2716 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-04-03 03:13:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2023-04-03 03:13:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3671970624235006) internal successors, (1117), 838 states have internal predecessors, (1117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1120 transitions. [2023-04-03 03:13:03,402 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1120 transitions. Word has length 98 [2023-04-03 03:13:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:03,402 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1120 transitions. [2023-04-03 03:13:03,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1120 transitions. [2023-04-03 03:13:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:03,404 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:03,404 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] [2023-04-03 03:13:03,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 03:13:03,404 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:03,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash -134066458, now seen corresponding path program 1 times [2023-04-03 03:13:03,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:03,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190541949] [2023-04-03 03:13:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:03,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:03,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:03,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190541949] [2023-04-03 03:13:03,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190541949] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:03,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:03,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:03,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821866527] [2023-04-03 03:13:03,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:03,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:03,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:03,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:03,801 INFO L87 Difference]: Start difference. First operand 842 states and 1120 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:05,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:05,223 INFO L93 Difference]: Finished difference Result 1557 states and 2068 transitions. [2023-04-03 03:13:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:05,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:05,227 INFO L225 Difference]: With dead ends: 1557 [2023-04-03 03:13:05,227 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:05,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:05,228 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 3577 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 2124 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3577 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:05,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3577 Valid, 2561 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2124 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:05,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.364749082007344) internal successors, (1115), 838 states have internal predecessors, (1115), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1118 transitions. [2023-04-03 03:13:05,405 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1118 transitions. Word has length 98 [2023-04-03 03:13:05,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:05,405 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1118 transitions. [2023-04-03 03:13:05,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1118 transitions. [2023-04-03 03:13:05,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:05,407 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:05,407 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] [2023-04-03 03:13:05,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 03:13:05,408 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:05,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1793785511, now seen corresponding path program 1 times [2023-04-03 03:13:05,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:05,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022304539] [2023-04-03 03:13:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:05,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:05,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022304539] [2023-04-03 03:13:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022304539] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:05,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:05,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:05,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313616687] [2023-04-03 03:13:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:05,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:05,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:05,760 INFO L87 Difference]: Start difference. First operand 842 states and 1118 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:07,490 INFO L93 Difference]: Finished difference Result 1559 states and 2067 transitions. [2023-04-03 03:13:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:07,491 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:07,494 INFO L225 Difference]: With dead ends: 1559 [2023-04-03 03:13:07,495 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:07,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:13:07,496 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 2671 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:07,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2671 Valid, 2601 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:13:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:07,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3623011015911872) internal successors, (1113), 838 states have internal predecessors, (1113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1116 transitions. [2023-04-03 03:13:07,648 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1116 transitions. Word has length 98 [2023-04-03 03:13:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:07,649 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1116 transitions. [2023-04-03 03:13:07,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1116 transitions. [2023-04-03 03:13:07,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:07,651 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:07,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:13:07,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 03:13:07,651 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:07,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash -992184103, now seen corresponding path program 1 times [2023-04-03 03:13:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:07,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885188200] [2023-04-03 03:13:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:08,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:08,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885188200] [2023-04-03 03:13:08,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885188200] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:08,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:08,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:08,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903148153] [2023-04-03 03:13:08,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:08,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:08,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:08,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:08,040 INFO L87 Difference]: Start difference. First operand 842 states and 1116 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:09,436 INFO L93 Difference]: Finished difference Result 1559 states and 2063 transitions. [2023-04-03 03:13:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:09,438 INFO L225 Difference]: With dead ends: 1559 [2023-04-03 03:13:09,438 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:09,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:09,439 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 3572 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:09,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3572 Valid, 2558 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:13:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:09,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:09,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3598531211750307) internal successors, (1111), 838 states have internal predecessors, (1111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1114 transitions. [2023-04-03 03:13:09,611 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1114 transitions. Word has length 98 [2023-04-03 03:13:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:09,611 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1114 transitions. [2023-04-03 03:13:09,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1114 transitions. [2023-04-03 03:13:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:09,614 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:09,614 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] [2023-04-03 03:13:09,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 03:13:09,614 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:09,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:09,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1952764228, now seen corresponding path program 1 times [2023-04-03 03:13:09,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:09,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122771157] [2023-04-03 03:13:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:09,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:09,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:09,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122771157] [2023-04-03 03:13:09,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122771157] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:09,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:09,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:09,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314742498] [2023-04-03 03:13:09,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:09,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:09,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:09,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:09,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:09,926 INFO L87 Difference]: Start difference. First operand 842 states and 1114 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:11,419 INFO L93 Difference]: Finished difference Result 1609 states and 2132 transitions. [2023-04-03 03:13:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:11,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:11,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:11,422 INFO L225 Difference]: With dead ends: 1609 [2023-04-03 03:13:11,422 INFO L226 Difference]: Without dead ends: 1473 [2023-04-03 03:13:11,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:13:11,423 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 3238 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3238 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:11,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3238 Valid, 2824 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2023-04-03 03:13:11,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2023-04-03 03:13:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3574051407588739) internal successors, (1109), 838 states have internal predecessors, (1109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1112 transitions. [2023-04-03 03:13:11,577 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1112 transitions. Word has length 98 [2023-04-03 03:13:11,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:11,577 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1112 transitions. [2023-04-03 03:13:11,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1112 transitions. [2023-04-03 03:13:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:11,579 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:11,579 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] [2023-04-03 03:13:11,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 03:13:11,580 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:11,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1711568343, now seen corresponding path program 1 times [2023-04-03 03:13:11,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:11,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216222894] [2023-04-03 03:13:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:11,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:11,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:11,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216222894] [2023-04-03 03:13:11,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216222894] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:11,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:11,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:11,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517935554] [2023-04-03 03:13:11,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:11,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:11,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:11,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:11,885 INFO L87 Difference]: Start difference. First operand 842 states and 1112 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:13,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:13,383 INFO L93 Difference]: Finished difference Result 1553 states and 2050 transitions. [2023-04-03 03:13:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:13,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:13,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:13,386 INFO L225 Difference]: With dead ends: 1553 [2023-04-03 03:13:13,386 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:13,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:13:13,386 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 3341 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3341 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 2245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:13,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3341 Valid, 2695 Invalid, 2245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3561811505507957) internal successors, (1108), 838 states have internal predecessors, (1108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1111 transitions. [2023-04-03 03:13:13,548 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1111 transitions. Word has length 98 [2023-04-03 03:13:13,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:13,549 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1111 transitions. [2023-04-03 03:13:13,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:13,549 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1111 transitions. [2023-04-03 03:13:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:13,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:13,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:13:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-03 03:13:13,551 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:13,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:13,551 INFO L85 PathProgramCache]: Analyzing trace with hash 654899548, now seen corresponding path program 1 times [2023-04-03 03:13:13,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:13,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421189582] [2023-04-03 03:13:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:13,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:13,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:13,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421189582] [2023-04-03 03:13:13,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421189582] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:13,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:13,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:13,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510354758] [2023-04-03 03:13:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:13,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:13,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:13,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:13,917 INFO L87 Difference]: Start difference. First operand 842 states and 1111 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:15,389 INFO L93 Difference]: Finished difference Result 1549 states and 2045 transitions. [2023-04-03 03:13:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:15,391 INFO L225 Difference]: With dead ends: 1549 [2023-04-03 03:13:15,391 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:15,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:15,392 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 3434 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3434 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:15,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3434 Valid, 2657 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:15,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:15,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3549571603427173) internal successors, (1107), 838 states have internal predecessors, (1107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1110 transitions. [2023-04-03 03:13:15,559 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1110 transitions. Word has length 98 [2023-04-03 03:13:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:15,559 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1110 transitions. [2023-04-03 03:13:15,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1110 transitions. [2023-04-03 03:13:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:15,561 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:15,561 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] [2023-04-03 03:13:15,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-03 03:13:15,561 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:15,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:15,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1014248550, now seen corresponding path program 1 times [2023-04-03 03:13:15,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:15,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704880655] [2023-04-03 03:13:15,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:15,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:15,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:15,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704880655] [2023-04-03 03:13:15,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704880655] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:15,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:15,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:15,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347261495] [2023-04-03 03:13:15,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:15,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:15,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:15,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:15,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:15,912 INFO L87 Difference]: Start difference. First operand 842 states and 1110 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:17,424 INFO L93 Difference]: Finished difference Result 1547 states and 2042 transitions. [2023-04-03 03:13:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:17,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:17,426 INFO L225 Difference]: With dead ends: 1547 [2023-04-03 03:13:17,426 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:17,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:17,427 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 3353 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:17,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 2697 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.353733170134639) internal successors, (1106), 838 states have internal predecessors, (1106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1109 transitions. [2023-04-03 03:13:17,635 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1109 transitions. Word has length 98 [2023-04-03 03:13:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:17,636 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1109 transitions. [2023-04-03 03:13:17,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1109 transitions. [2023-04-03 03:13:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:17,638 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:17,638 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] [2023-04-03 03:13:17,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-03 03:13:17,638 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:17,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:17,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1906794088, now seen corresponding path program 1 times [2023-04-03 03:13:17,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:17,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378264982] [2023-04-03 03:13:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:17,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:17,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:17,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378264982] [2023-04-03 03:13:17,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378264982] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:17,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:17,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353435863] [2023-04-03 03:13:17,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:17,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:17,940 INFO L87 Difference]: Start difference. First operand 842 states and 1109 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:19,434 INFO L93 Difference]: Finished difference Result 1549 states and 2043 transitions. [2023-04-03 03:13:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:19,436 INFO L225 Difference]: With dead ends: 1549 [2023-04-03 03:13:19,436 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:19,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:13:19,437 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 2587 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:19,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2587 Valid, 2694 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:19,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3525091799265605) internal successors, (1105), 838 states have internal predecessors, (1105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1108 transitions. [2023-04-03 03:13:19,643 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1108 transitions. Word has length 98 [2023-04-03 03:13:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:19,643 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1108 transitions. [2023-04-03 03:13:19,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1108 transitions. [2023-04-03 03:13:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:19,645 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:19,645 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] [2023-04-03 03:13:19,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-03 03:13:19,645 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:19,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:19,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2126249870, now seen corresponding path program 1 times [2023-04-03 03:13:19,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:19,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970591912] [2023-04-03 03:13:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:19,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:19,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:19,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970591912] [2023-04-03 03:13:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970591912] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:19,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:19,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010453059] [2023-04-03 03:13:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:19,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:19,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:19,975 INFO L87 Difference]: Start difference. First operand 842 states and 1108 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:21,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:21,569 INFO L93 Difference]: Finished difference Result 1553 states and 2045 transitions. [2023-04-03 03:13:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:21,571 INFO L225 Difference]: With dead ends: 1553 [2023-04-03 03:13:21,571 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:21,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:21,572 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 3427 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3427 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:21,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3427 Valid, 2652 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:21,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3512851897184823) internal successors, (1104), 838 states have internal predecessors, (1104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1107 transitions. [2023-04-03 03:13:21,751 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1107 transitions. Word has length 98 [2023-04-03 03:13:21,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:21,751 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1107 transitions. [2023-04-03 03:13:21,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:21,751 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1107 transitions. [2023-04-03 03:13:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:21,753 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:21,753 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, 1, 1] [2023-04-03 03:13:21,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-03 03:13:21,753 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:21,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash 68643961, now seen corresponding path program 1 times [2023-04-03 03:13:21,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:21,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666739687] [2023-04-03 03:13:21,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:21,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:22,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:22,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666739687] [2023-04-03 03:13:22,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666739687] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:22,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:22,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:22,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801520579] [2023-04-03 03:13:22,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:22,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:22,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:22,112 INFO L87 Difference]: Start difference. First operand 842 states and 1107 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:23,664 INFO L93 Difference]: Finished difference Result 1549 states and 2040 transitions. [2023-04-03 03:13:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:23,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:23,667 INFO L225 Difference]: With dead ends: 1549 [2023-04-03 03:13:23,667 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:23,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:23,668 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 3314 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3314 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:23,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3314 Valid, 2707 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:23,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.350061199510404) internal successors, (1103), 838 states have internal predecessors, (1103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:23,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1106 transitions. [2023-04-03 03:13:23,847 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1106 transitions. Word has length 98 [2023-04-03 03:13:23,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:23,847 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1106 transitions. [2023-04-03 03:13:23,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:23,848 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1106 transitions. [2023-04-03 03:13:23,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:13:23,849 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:23,849 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] [2023-04-03 03:13:23,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-03 03:13:23,850 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:23,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:23,850 INFO L85 PathProgramCache]: Analyzing trace with hash 457646490, now seen corresponding path program 1 times [2023-04-03 03:13:23,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:23,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440466550] [2023-04-03 03:13:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:23,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:24,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:24,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440466550] [2023-04-03 03:13:24,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440466550] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:24,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:24,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:24,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056614122] [2023-04-03 03:13:24,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:24,128 INFO L87 Difference]: Start difference. First operand 842 states and 1106 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:25,628 INFO L93 Difference]: Finished difference Result 1553 states and 2043 transitions. [2023-04-03 03:13:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:25,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:13:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:25,631 INFO L225 Difference]: With dead ends: 1553 [2023-04-03 03:13:25,631 INFO L226 Difference]: Without dead ends: 1449 [2023-04-03 03:13:25,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:13:25,632 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 2563 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2563 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:25,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2563 Valid, 2693 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-04-03 03:13:25,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 842. [2023-04-03 03:13:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 817 states have (on average 1.3488372093023255) internal successors, (1102), 838 states have internal predecessors, (1102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1105 transitions. [2023-04-03 03:13:25,845 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1105 transitions. Word has length 98 [2023-04-03 03:13:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:25,846 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1105 transitions. [2023-04-03 03:13:25,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:25,846 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1105 transitions. [2023-04-03 03:13:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-03 03:13:25,847 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:25,847 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, 1, 1, 1, 1, 1] [2023-04-03 03:13:25,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-03 03:13:25,847 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:25,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1411034456, now seen corresponding path program 1 times [2023-04-03 03:13:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284977182] [2023-04-03 03:13:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:25,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:26,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:26,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284977182] [2023-04-03 03:13:26,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284977182] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:26,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:26,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:13:26,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308129969] [2023-04-03 03:13:26,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:26,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:13:26,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:13:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:13:26,615 INFO L87 Difference]: Start difference. First operand 842 states and 1105 transitions. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:28,439 INFO L93 Difference]: Finished difference Result 1724 states and 2276 transitions. [2023-04-03 03:13:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:13:28,440 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-03 03:13:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:28,443 INFO L225 Difference]: With dead ends: 1724 [2023-04-03 03:13:28,443 INFO L226 Difference]: Without dead ends: 1631 [2023-04-03 03:13:28,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:13:28,444 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 4157 mSDsluCounter, 4571 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4157 SdHoareTripleChecker+Valid, 5623 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:28,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4157 Valid, 5623 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:13:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2023-04-03 03:13:28,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 841. [2023-04-03 03:13:28,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 816 states have (on average 1.3480392156862746) internal successors, (1100), 837 states have internal predecessors, (1100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1103 transitions. [2023-04-03 03:13:28,739 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1103 transitions. Word has length 99 [2023-04-03 03:13:28,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:28,739 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1103 transitions. [2023-04-03 03:13:28,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1103 transitions. [2023-04-03 03:13:28,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:28,740 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:28,741 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] [2023-04-03 03:13:28,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-03 03:13:28,741 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:28,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash -754288459, now seen corresponding path program 1 times [2023-04-03 03:13:28,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:28,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980147370] [2023-04-03 03:13:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:28,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:29,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:29,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980147370] [2023-04-03 03:13:29,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980147370] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:29,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:29,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:29,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967537390] [2023-04-03 03:13:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:29,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:29,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:29,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:29,093 INFO L87 Difference]: Start difference. First operand 841 states and 1103 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:30,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:30,688 INFO L93 Difference]: Finished difference Result 1500 states and 1954 transitions. [2023-04-03 03:13:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:30,690 INFO L225 Difference]: With dead ends: 1500 [2023-04-03 03:13:30,690 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:13:30,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:13:30,691 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 2752 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:30,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 2596 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:30,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:13:30,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 841. [2023-04-03 03:13:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 816 states have (on average 1.3455882352941178) internal successors, (1098), 837 states have internal predecessors, (1098), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1101 transitions. [2023-04-03 03:13:30,912 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1101 transitions. Word has length 100 [2023-04-03 03:13:30,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:30,912 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1101 transitions. [2023-04-03 03:13:30,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1101 transitions. [2023-04-03 03:13:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:30,913 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:30,914 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] [2023-04-03 03:13:30,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-03 03:13:30,914 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:30,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:30,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1174868053, now seen corresponding path program 1 times [2023-04-03 03:13:30,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:30,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614731689] [2023-04-03 03:13:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:30,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:31,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:31,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614731689] [2023-04-03 03:13:31,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614731689] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:31,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:31,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584381951] [2023-04-03 03:13:31,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:31,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:31,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:31,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:31,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:31,282 INFO L87 Difference]: Start difference. First operand 841 states and 1101 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:32,943 INFO L93 Difference]: Finished difference Result 1564 states and 2052 transitions. [2023-04-03 03:13:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:32,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:32,947 INFO L225 Difference]: With dead ends: 1564 [2023-04-03 03:13:32,947 INFO L226 Difference]: Without dead ends: 1448 [2023-04-03 03:13:32,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:32,948 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 3300 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3300 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:32,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3300 Valid, 2718 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:32,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2023-04-03 03:13:33,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 841. [2023-04-03 03:13:33,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 816 states have (on average 1.3431372549019607) internal successors, (1096), 837 states have internal predecessors, (1096), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1099 transitions. [2023-04-03 03:13:33,258 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1099 transitions. Word has length 100 [2023-04-03 03:13:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:33,259 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1099 transitions. [2023-04-03 03:13:33,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1099 transitions. [2023-04-03 03:13:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:33,260 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:33,260 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] [2023-04-03 03:13:33,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-03 03:13:33,261 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:33,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash 511555385, now seen corresponding path program 1 times [2023-04-03 03:13:33,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:33,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164366479] [2023-04-03 03:13:33,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:33,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:33,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:33,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164366479] [2023-04-03 03:13:33,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164366479] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:33,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:33,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:33,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883599449] [2023-04-03 03:13:33,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:33,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:33,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:33,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:33,566 INFO L87 Difference]: Start difference. First operand 841 states and 1099 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:35,123 INFO L93 Difference]: Finished difference Result 1564 states and 2050 transitions. [2023-04-03 03:13:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:35,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:35,126 INFO L225 Difference]: With dead ends: 1564 [2023-04-03 03:13:35,126 INFO L226 Difference]: Without dead ends: 1448 [2023-04-03 03:13:35,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:13:35,127 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 2617 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:35,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 2641 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:13:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2023-04-03 03:13:35,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 841. [2023-04-03 03:13:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 816 states have (on average 1.3406862745098038) internal successors, (1094), 837 states have internal predecessors, (1094), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1097 transitions. [2023-04-03 03:13:35,443 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1097 transitions. Word has length 100 [2023-04-03 03:13:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:35,443 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1097 transitions. [2023-04-03 03:13:35,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1097 transitions. [2023-04-03 03:13:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:35,444 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:35,444 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] [2023-04-03 03:13:35,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-03 03:13:35,444 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:35,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1417601127, now seen corresponding path program 1 times [2023-04-03 03:13:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:35,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401877574] [2023-04-03 03:13:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:35,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:35,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401877574] [2023-04-03 03:13:35,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401877574] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:35,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:35,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:35,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214559725] [2023-04-03 03:13:35,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:35,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:35,803 INFO L87 Difference]: Start difference. First operand 841 states and 1097 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:37,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:37,411 INFO L93 Difference]: Finished difference Result 1500 states and 1948 transitions. [2023-04-03 03:13:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:37,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:37,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:37,413 INFO L225 Difference]: With dead ends: 1500 [2023-04-03 03:13:37,414 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:13:37,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:37,415 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 3555 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3555 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:37,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3555 Valid, 2315 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:13:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:13:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 841. [2023-04-03 03:13:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 816 states have (on average 1.338235294117647) internal successors, (1092), 837 states have internal predecessors, (1092), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1095 transitions. [2023-04-03 03:13:37,706 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1095 transitions. Word has length 100 [2023-04-03 03:13:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:37,707 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1095 transitions. [2023-04-03 03:13:37,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1095 transitions. [2023-04-03 03:13:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:37,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:37,708 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] [2023-04-03 03:13:37,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-03 03:13:37,708 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:37,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1716151565, now seen corresponding path program 1 times [2023-04-03 03:13:37,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:37,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305323796] [2023-04-03 03:13:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:37,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:38,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:38,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305323796] [2023-04-03 03:13:38,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305323796] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:38,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:38,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:13:38,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953553806] [2023-04-03 03:13:38,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:13:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:38,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:13:38,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:13:38,195 INFO L87 Difference]: Start difference. First operand 841 states and 1095 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:41,084 INFO L93 Difference]: Finished difference Result 1970 states and 2579 transitions. [2023-04-03 03:13:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:13:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:41,087 INFO L225 Difference]: With dead ends: 1970 [2023-04-03 03:13:41,087 INFO L226 Difference]: Without dead ends: 1870 [2023-04-03 03:13:41,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:13:41,088 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 5190 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:41,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5190 Valid, 2409 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:13:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2023-04-03 03:13:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 849. [2023-04-03 03:13:41,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 824 states have (on average 1.3349514563106797) internal successors, (1100), 845 states have internal predecessors, (1100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1103 transitions. [2023-04-03 03:13:41,404 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1103 transitions. Word has length 100 [2023-04-03 03:13:41,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:41,404 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1103 transitions. [2023-04-03 03:13:41,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1103 transitions. [2023-04-03 03:13:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:41,405 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:41,405 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] [2023-04-03 03:13:41,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-03 03:13:41,406 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:41,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:41,406 INFO L85 PathProgramCache]: Analyzing trace with hash -453474983, now seen corresponding path program 1 times [2023-04-03 03:13:41,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:41,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096744058] [2023-04-03 03:13:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:41,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:41,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:41,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096744058] [2023-04-03 03:13:41,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096744058] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:41,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:41,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922249793] [2023-04-03 03:13:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:41,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:41,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:41,748 INFO L87 Difference]: Start difference. First operand 849 states and 1103 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:43,495 INFO L93 Difference]: Finished difference Result 1496 states and 1939 transitions. [2023-04-03 03:13:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:43,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:43,497 INFO L225 Difference]: With dead ends: 1496 [2023-04-03 03:13:43,497 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:13:43,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:43,498 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 3561 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3561 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:43,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3561 Valid, 2288 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:13:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:13:43,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 849. [2023-04-03 03:13:43,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 824 states have (on average 1.3325242718446602) internal successors, (1098), 845 states have internal predecessors, (1098), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1101 transitions. [2023-04-03 03:13:43,764 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1101 transitions. Word has length 100 [2023-04-03 03:13:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:43,764 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1101 transitions. [2023-04-03 03:13:43,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1101 transitions. [2023-04-03 03:13:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:43,766 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:43,766 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] [2023-04-03 03:13:43,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-03 03:13:43,766 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:43,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash 630481511, now seen corresponding path program 1 times [2023-04-03 03:13:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584830467] [2023-04-03 03:13:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:43,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:44,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584830467] [2023-04-03 03:13:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584830467] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:44,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:44,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:13:44,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789552676] [2023-04-03 03:13:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:44,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:13:44,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:13:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:13:44,231 INFO L87 Difference]: Start difference. First operand 849 states and 1101 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:47,130 INFO L93 Difference]: Finished difference Result 1974 states and 2583 transitions. [2023-04-03 03:13:47,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:13:47,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:47,133 INFO L225 Difference]: With dead ends: 1974 [2023-04-03 03:13:47,133 INFO L226 Difference]: Without dead ends: 1878 [2023-04-03 03:13:47,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:13:47,134 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 6217 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6217 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:47,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6217 Valid, 2395 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:13:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2023-04-03 03:13:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 857. [2023-04-03 03:13:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 832 states have (on average 1.3293269230769231) internal successors, (1106), 853 states have internal predecessors, (1106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1109 transitions. [2023-04-03 03:13:47,407 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1109 transitions. Word has length 100 [2023-04-03 03:13:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:47,407 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1109 transitions. [2023-04-03 03:13:47,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1109 transitions. [2023-04-03 03:13:47,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:47,408 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:47,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:13:47,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-03 03:13:47,408 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:47,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:47,409 INFO L85 PathProgramCache]: Analyzing trace with hash -414955608, now seen corresponding path program 1 times [2023-04-03 03:13:47,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:47,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100357404] [2023-04-03 03:13:47,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:47,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:47,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:47,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100357404] [2023-04-03 03:13:47,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100357404] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:47,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:47,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:47,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117495161] [2023-04-03 03:13:47,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:47,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:47,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:47,712 INFO L87 Difference]: Start difference. First operand 857 states and 1109 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:49,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:49,461 INFO L93 Difference]: Finished difference Result 1492 states and 1931 transitions. [2023-04-03 03:13:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:49,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:49,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:49,463 INFO L225 Difference]: With dead ends: 1492 [2023-04-03 03:13:49,463 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:13:49,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:49,464 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 3698 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3698 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:49,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3698 Valid, 2211 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:13:49,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:13:49,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 857. [2023-04-03 03:13:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 832 states have (on average 1.3269230769230769) internal successors, (1104), 853 states have internal predecessors, (1104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1107 transitions. [2023-04-03 03:13:49,812 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1107 transitions. Word has length 100 [2023-04-03 03:13:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:49,812 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1107 transitions. [2023-04-03 03:13:49,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1107 transitions. [2023-04-03 03:13:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:49,813 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:49,813 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] [2023-04-03 03:13:49,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-04-03 03:13:49,814 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:49,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:49,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1433725044, now seen corresponding path program 1 times [2023-04-03 03:13:49,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:49,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229350084] [2023-04-03 03:13:49,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:49,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:50,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:50,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229350084] [2023-04-03 03:13:50,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229350084] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:50,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:50,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:13:50,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008068775] [2023-04-03 03:13:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:50,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:13:50,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:50,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:13:50,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:13:50,312 INFO L87 Difference]: Start difference. First operand 857 states and 1107 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:53,300 INFO L93 Difference]: Finished difference Result 1872 states and 2437 transitions. [2023-04-03 03:13:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:13:53,300 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:53,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:53,302 INFO L225 Difference]: With dead ends: 1872 [2023-04-03 03:13:53,302 INFO L226 Difference]: Without dead ends: 1867 [2023-04-03 03:13:53,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:13:53,304 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 5201 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5201 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:53,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5201 Valid, 2393 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:13:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2023-04-03 03:13:53,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 865. [2023-04-03 03:13:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 840 states have (on average 1.3238095238095238) internal successors, (1112), 861 states have internal predecessors, (1112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1115 transitions. [2023-04-03 03:13:53,605 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1115 transitions. Word has length 100 [2023-04-03 03:13:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:53,605 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1115 transitions. [2023-04-03 03:13:53,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:53,605 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1115 transitions. [2023-04-03 03:13:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:53,607 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:53,607 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] [2023-04-03 03:13:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-04-03 03:13:53,607 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:53,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1587767549, now seen corresponding path program 1 times [2023-04-03 03:13:53,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:53,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282146421] [2023-04-03 03:13:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:53,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:53,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:53,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282146421] [2023-04-03 03:13:53,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282146421] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:53,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:53,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007904976] [2023-04-03 03:13:53,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:53,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:53,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:53,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:53,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:53,960 INFO L87 Difference]: Start difference. First operand 865 states and 1115 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:55,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:55,739 INFO L93 Difference]: Finished difference Result 1496 states and 1931 transitions. [2023-04-03 03:13:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:55,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:55,741 INFO L225 Difference]: With dead ends: 1496 [2023-04-03 03:13:55,741 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:13:55,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:55,741 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 3706 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3706 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:55,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3706 Valid, 2202 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:13:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:13:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 865. [2023-04-03 03:13:56,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 840 states have (on average 1.3214285714285714) internal successors, (1110), 861 states have internal predecessors, (1110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:56,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1113 transitions. [2023-04-03 03:13:56,108 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1113 transitions. Word has length 100 [2023-04-03 03:13:56,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:56,109 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1113 transitions. [2023-04-03 03:13:56,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:56,109 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1113 transitions. [2023-04-03 03:13:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:56,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:56,110 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] [2023-04-03 03:13:56,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-04-03 03:13:56,110 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:56,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:56,111 INFO L85 PathProgramCache]: Analyzing trace with hash 67148052, now seen corresponding path program 1 times [2023-04-03 03:13:56,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:56,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412865530] [2023-04-03 03:13:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:56,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:56,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:56,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412865530] [2023-04-03 03:13:56,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412865530] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:56,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:56,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332290761] [2023-04-03 03:13:56,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:56,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:56,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:56,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:56,396 INFO L87 Difference]: Start difference. First operand 865 states and 1113 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:58,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:13:58,136 INFO L93 Difference]: Finished difference Result 1405 states and 1805 transitions. [2023-04-03 03:13:58,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:13:58,136 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:13:58,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:13:58,138 INFO L225 Difference]: With dead ends: 1405 [2023-04-03 03:13:58,138 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:13:58,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:13:58,139 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 3695 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3695 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:13:58,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3695 Valid, 2226 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:13:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:13:58,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 865. [2023-04-03 03:13:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 840 states have (on average 1.319047619047619) internal successors, (1108), 861 states have internal predecessors, (1108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:58,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1111 transitions. [2023-04-03 03:13:58,439 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1111 transitions. Word has length 100 [2023-04-03 03:13:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:13:58,439 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1111 transitions. [2023-04-03 03:13:58,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:13:58,439 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1111 transitions. [2023-04-03 03:13:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:13:58,440 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:13:58,440 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] [2023-04-03 03:13:58,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-04-03 03:13:58,440 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:13:58,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:13:58,441 INFO L85 PathProgramCache]: Analyzing trace with hash -317900109, now seen corresponding path program 1 times [2023-04-03 03:13:58,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:13:58,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419139754] [2023-04-03 03:13:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:13:58,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:13:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:13:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:13:58,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:13:58,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419139754] [2023-04-03 03:13:58,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419139754] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:13:58,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:13:58,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:13:58,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077724210] [2023-04-03 03:13:58,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:13:58,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:13:58,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:13:58,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:13:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:13:58,684 INFO L87 Difference]: Start difference. First operand 865 states and 1111 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:00,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:00,489 INFO L93 Difference]: Finished difference Result 1497 states and 1926 transitions. [2023-04-03 03:14:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:00,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:00,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:00,490 INFO L225 Difference]: With dead ends: 1497 [2023-04-03 03:14:00,491 INFO L226 Difference]: Without dead ends: 1480 [2023-04-03 03:14:00,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:14:00,491 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 2123 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:00,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 2682 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:14:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2023-04-03 03:14:00,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 865. [2023-04-03 03:14:00,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 840 states have (on average 1.3166666666666667) internal successors, (1106), 861 states have internal predecessors, (1106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:00,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1109 transitions. [2023-04-03 03:14:00,792 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1109 transitions. Word has length 100 [2023-04-03 03:14:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:00,792 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1109 transitions. [2023-04-03 03:14:00,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:00,793 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1109 transitions. [2023-04-03 03:14:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:00,794 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:00,794 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, 1, 1, 1, 1, 1, 1] [2023-04-03 03:14:00,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-04-03 03:14:00,794 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:00,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash -118452090, now seen corresponding path program 1 times [2023-04-03 03:14:00,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:00,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370029157] [2023-04-03 03:14:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:00,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:01,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:01,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370029157] [2023-04-03 03:14:01,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370029157] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:01,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:01,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:14:01,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467451011] [2023-04-03 03:14:01,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:01,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:14:01,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:14:01,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:14:01,250 INFO L87 Difference]: Start difference. First operand 865 states and 1109 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:04,449 INFO L93 Difference]: Finished difference Result 1872 states and 2429 transitions. [2023-04-03 03:14:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:14:04,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:04,452 INFO L225 Difference]: With dead ends: 1872 [2023-04-03 03:14:04,452 INFO L226 Difference]: Without dead ends: 1867 [2023-04-03 03:14:04,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:14:04,453 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 5138 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5138 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:04,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5138 Valid, 2424 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:14:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2023-04-03 03:14:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 873. [2023-04-03 03:14:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 848 states have (on average 1.3136792452830188) internal successors, (1114), 869 states have internal predecessors, (1114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1117 transitions. [2023-04-03 03:14:04,905 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1117 transitions. Word has length 100 [2023-04-03 03:14:04,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:04,905 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1117 transitions. [2023-04-03 03:14:04,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:04,905 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1117 transitions. [2023-04-03 03:14:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:04,907 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:04,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:14:04,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-04-03 03:14:04,907 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:04,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1155130850, now seen corresponding path program 1 times [2023-04-03 03:14:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:04,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266127661] [2023-04-03 03:14:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:05,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:05,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266127661] [2023-04-03 03:14:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266127661] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:05,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:05,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140306369] [2023-04-03 03:14:05,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:05,217 INFO L87 Difference]: Start difference. First operand 873 states and 1117 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:06,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:06,988 INFO L93 Difference]: Finished difference Result 1496 states and 1923 transitions. [2023-04-03 03:14:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:06,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:06,990 INFO L225 Difference]: With dead ends: 1496 [2023-04-03 03:14:06,990 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:14:06,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:14:06,991 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 3650 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3650 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:06,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3650 Valid, 2238 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:14:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:14:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 873. [2023-04-03 03:14:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 848 states have (on average 1.3113207547169812) internal successors, (1112), 869 states have internal predecessors, (1112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:07,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1115 transitions. [2023-04-03 03:14:07,313 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1115 transitions. Word has length 100 [2023-04-03 03:14:07,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:07,313 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1115 transitions. [2023-04-03 03:14:07,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1115 transitions. [2023-04-03 03:14:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:07,314 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:07,314 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] [2023-04-03 03:14:07,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-04-03 03:14:07,314 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:07,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:07,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1315879545, now seen corresponding path program 1 times [2023-04-03 03:14:07,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:07,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468197824] [2023-04-03 03:14:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:07,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:07,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:07,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468197824] [2023-04-03 03:14:07,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468197824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:07,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:07,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028775034] [2023-04-03 03:14:07,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:07,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:07,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:07,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:07,563 INFO L87 Difference]: Start difference. First operand 873 states and 1115 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:09,370 INFO L93 Difference]: Finished difference Result 1494 states and 1919 transitions. [2023-04-03 03:14:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:09,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:09,371 INFO L225 Difference]: With dead ends: 1494 [2023-04-03 03:14:09,371 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:14:09,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:14:09,372 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 3512 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:09,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3512 Valid, 2312 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:14:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:14:09,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 873. [2023-04-03 03:14:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 848 states have (on average 1.3101415094339623) internal successors, (1111), 869 states have internal predecessors, (1111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1114 transitions. [2023-04-03 03:14:09,749 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1114 transitions. Word has length 100 [2023-04-03 03:14:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:09,749 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1114 transitions. [2023-04-03 03:14:09,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1114 transitions. [2023-04-03 03:14:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:09,750 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:09,750 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] [2023-04-03 03:14:09,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-04-03 03:14:09,751 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:09,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash 43052278, now seen corresponding path program 1 times [2023-04-03 03:14:09,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:09,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485462487] [2023-04-03 03:14:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:09,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:09,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485462487] [2023-04-03 03:14:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485462487] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:09,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:09,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300209118] [2023-04-03 03:14:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:09,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:09,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:09,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:09,998 INFO L87 Difference]: Start difference. First operand 873 states and 1114 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:11,820 INFO L93 Difference]: Finished difference Result 1405 states and 1796 transitions. [2023-04-03 03:14:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:11,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:11,822 INFO L225 Difference]: With dead ends: 1405 [2023-04-03 03:14:11,822 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:14:11,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:14:11,822 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 3255 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3255 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:11,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3255 Valid, 2372 Invalid, 2038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:14:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:14:12,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 873. [2023-04-03 03:14:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 848 states have (on average 1.3089622641509433) internal successors, (1110), 869 states have internal predecessors, (1110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1113 transitions. [2023-04-03 03:14:12,146 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1113 transitions. Word has length 100 [2023-04-03 03:14:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:12,146 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1113 transitions. [2023-04-03 03:14:12,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1113 transitions. [2023-04-03 03:14:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:12,148 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:12,148 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] [2023-04-03 03:14:12,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-04-03 03:14:12,148 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:12,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash -760838691, now seen corresponding path program 1 times [2023-04-03 03:14:12,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:12,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067935750] [2023-04-03 03:14:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:12,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:12,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:12,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067935750] [2023-04-03 03:14:12,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067935750] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:12,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:12,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:14:12,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992906341] [2023-04-03 03:14:12,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:12,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:14:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:12,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:14:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:14:12,668 INFO L87 Difference]: Start difference. First operand 873 states and 1113 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:16,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:16,081 INFO L93 Difference]: Finished difference Result 1956 states and 2539 transitions. [2023-04-03 03:14:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:14:16,082 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:16,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:16,084 INFO L225 Difference]: With dead ends: 1956 [2023-04-03 03:14:16,084 INFO L226 Difference]: Without dead ends: 1862 [2023-04-03 03:14:16,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:14:16,085 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 5045 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5045 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:16,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5045 Valid, 2945 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:14:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2023-04-03 03:14:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 877. [2023-04-03 03:14:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 852 states have (on average 1.307511737089202) internal successors, (1114), 873 states have internal predecessors, (1114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1117 transitions. [2023-04-03 03:14:16,429 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1117 transitions. Word has length 100 [2023-04-03 03:14:16,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:16,429 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1117 transitions. [2023-04-03 03:14:16,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1117 transitions. [2023-04-03 03:14:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:16,431 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:16,431 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] [2023-04-03 03:14:16,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-04-03 03:14:16,431 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:16,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash 380794794, now seen corresponding path program 1 times [2023-04-03 03:14:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:16,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425630968] [2023-04-03 03:14:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:16,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:16,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425630968] [2023-04-03 03:14:16,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425630968] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:16,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:16,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:16,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043678143] [2023-04-03 03:14:16,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:16,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:16,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:16,695 INFO L87 Difference]: Start difference. First operand 877 states and 1117 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:18,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:18,533 INFO L93 Difference]: Finished difference Result 1492 states and 1913 transitions. [2023-04-03 03:14:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:18,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:18,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:18,535 INFO L225 Difference]: With dead ends: 1492 [2023-04-03 03:14:18,535 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:14:18,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:14:18,536 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 3483 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3483 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:18,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3483 Valid, 2341 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:14:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:14:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 877. [2023-04-03 03:14:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 852 states have (on average 1.306338028169014) internal successors, (1113), 873 states have internal predecessors, (1113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1116 transitions. [2023-04-03 03:14:18,875 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1116 transitions. Word has length 100 [2023-04-03 03:14:18,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:18,876 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1116 transitions. [2023-04-03 03:14:18,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1116 transitions. [2023-04-03 03:14:18,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:18,877 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:18,877 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] [2023-04-03 03:14:18,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-04-03 03:14:18,877 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:18,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1461513331, now seen corresponding path program 1 times [2023-04-03 03:14:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412713287] [2023-04-03 03:14:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:19,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:19,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412713287] [2023-04-03 03:14:19,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412713287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:19,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:19,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:14:19,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109437248] [2023-04-03 03:14:19,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:19,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:14:19,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:14:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:14:19,270 INFO L87 Difference]: Start difference. First operand 877 states and 1116 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:22,760 INFO L93 Difference]: Finished difference Result 1953 states and 2534 transitions. [2023-04-03 03:14:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:14:22,760 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:22,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:22,762 INFO L225 Difference]: With dead ends: 1953 [2023-04-03 03:14:22,762 INFO L226 Difference]: Without dead ends: 1861 [2023-04-03 03:14:22,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:14:22,763 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 4636 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4636 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:22,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4636 Valid, 3028 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:14:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-04-03 03:14:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 881. [2023-04-03 03:14:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 856 states have (on average 1.3049065420560748) internal successors, (1117), 877 states have internal predecessors, (1117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1120 transitions. [2023-04-03 03:14:23,122 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1120 transitions. Word has length 100 [2023-04-03 03:14:23,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:23,122 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1120 transitions. [2023-04-03 03:14:23,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1120 transitions. [2023-04-03 03:14:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:23,123 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:23,123 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] [2023-04-03 03:14:23,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-04-03 03:14:23,123 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:23,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1441597639, now seen corresponding path program 1 times [2023-04-03 03:14:23,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:23,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180672163] [2023-04-03 03:14:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:23,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180672163] [2023-04-03 03:14:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180672163] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:23,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:23,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:14:23,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543363372] [2023-04-03 03:14:23,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:23,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:14:23,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:14:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:14:23,564 INFO L87 Difference]: Start difference. First operand 881 states and 1120 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:27,059 INFO L93 Difference]: Finished difference Result 1956 states and 2536 transitions. [2023-04-03 03:14:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:14:27,060 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:27,062 INFO L225 Difference]: With dead ends: 1956 [2023-04-03 03:14:27,062 INFO L226 Difference]: Without dead ends: 1862 [2023-04-03 03:14:27,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:14:27,063 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 6104 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6104 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:27,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6104 Valid, 2759 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:14:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2023-04-03 03:14:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 885. [2023-04-03 03:14:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 860 states have (on average 1.3034883720930233) internal successors, (1121), 881 states have internal predecessors, (1121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1124 transitions. [2023-04-03 03:14:27,428 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1124 transitions. Word has length 100 [2023-04-03 03:14:27,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:27,428 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1124 transitions. [2023-04-03 03:14:27,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1124 transitions. [2023-04-03 03:14:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:27,429 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:27,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:14:27,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-04-03 03:14:27,430 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:27,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:27,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1184669157, now seen corresponding path program 1 times [2023-04-03 03:14:27,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:27,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531573202] [2023-04-03 03:14:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:27,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:27,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:27,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531573202] [2023-04-03 03:14:27,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531573202] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:27,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:27,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:27,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928876522] [2023-04-03 03:14:27,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:27,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:27,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:27,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:27,742 INFO L87 Difference]: Start difference. First operand 885 states and 1124 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:29,614 INFO L93 Difference]: Finished difference Result 1492 states and 1910 transitions. [2023-04-03 03:14:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:29,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:29,616 INFO L225 Difference]: With dead ends: 1492 [2023-04-03 03:14:29,616 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:14:29,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:14:29,616 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 3645 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3645 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:29,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3645 Valid, 2227 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:14:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:14:29,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 885. [2023-04-03 03:14:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 860 states have (on average 1.302325581395349) internal successors, (1120), 881 states have internal predecessors, (1120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:29,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1123 transitions. [2023-04-03 03:14:29,984 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1123 transitions. Word has length 100 [2023-04-03 03:14:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:29,985 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1123 transitions. [2023-04-03 03:14:29,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1123 transitions. [2023-04-03 03:14:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:29,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:29,986 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] [2023-04-03 03:14:29,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-04-03 03:14:29,986 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:29,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1209742088, now seen corresponding path program 1 times [2023-04-03 03:14:29,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:29,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755212970] [2023-04-03 03:14:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:29,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:30,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755212970] [2023-04-03 03:14:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755212970] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:30,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:30,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:30,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791308601] [2023-04-03 03:14:30,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:30,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:30,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:30,276 INFO L87 Difference]: Start difference. First operand 885 states and 1123 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:32,179 INFO L93 Difference]: Finished difference Result 1613 states and 2062 transitions. [2023-04-03 03:14:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:32,179 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:32,181 INFO L225 Difference]: With dead ends: 1613 [2023-04-03 03:14:32,181 INFO L226 Difference]: Without dead ends: 1504 [2023-04-03 03:14:32,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:14:32,182 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 2579 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:32,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2579 Valid, 2641 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:14:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2023-04-03 03:14:32,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 885. [2023-04-03 03:14:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 860 states have (on average 1.3011627906976744) internal successors, (1119), 881 states have internal predecessors, (1119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1122 transitions. [2023-04-03 03:14:32,548 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1122 transitions. Word has length 100 [2023-04-03 03:14:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:32,549 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1122 transitions. [2023-04-03 03:14:32,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1122 transitions. [2023-04-03 03:14:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:32,551 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:32,551 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] [2023-04-03 03:14:32,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-04-03 03:14:32,551 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr18ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:32,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:32,551 INFO L85 PathProgramCache]: Analyzing trace with hash -719414424, now seen corresponding path program 1 times [2023-04-03 03:14:32,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:32,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160612679] [2023-04-03 03:14:32,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:32,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:32,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:32,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160612679] [2023-04-03 03:14:32,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160612679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:32,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:32,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:32,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543132385] [2023-04-03 03:14:32,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:32,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:32,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:32,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:32,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:32,787 INFO L87 Difference]: Start difference. First operand 885 states and 1122 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:34,762 INFO L93 Difference]: Finished difference Result 1497 states and 1913 transitions. [2023-04-03 03:14:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:34,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:34,764 INFO L225 Difference]: With dead ends: 1497 [2023-04-03 03:14:34,764 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:14:34,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:14:34,765 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 2601 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:34,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2601 Valid, 2585 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:14:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:14:35,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 885. [2023-04-03 03:14:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 860 states have (on average 1.3) internal successors, (1118), 881 states have internal predecessors, (1118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1121 transitions. [2023-04-03 03:14:35,132 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1121 transitions. Word has length 100 [2023-04-03 03:14:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:35,132 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1121 transitions. [2023-04-03 03:14:35,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1121 transitions. [2023-04-03 03:14:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:35,134 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:35,134 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] [2023-04-03 03:14:35,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-04-03 03:14:35,134 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:35,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:35,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1880629028, now seen corresponding path program 1 times [2023-04-03 03:14:35,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:35,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686865706] [2023-04-03 03:14:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:35,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:35,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:35,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686865706] [2023-04-03 03:14:35,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686865706] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:35,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:35,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:14:35,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708594306] [2023-04-03 03:14:35,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:35,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:14:35,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:14:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:14:35,526 INFO L87 Difference]: Start difference. First operand 885 states and 1121 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:39,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:39,033 INFO L93 Difference]: Finished difference Result 1956 states and 2529 transitions. [2023-04-03 03:14:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:14:39,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:39,039 INFO L225 Difference]: With dead ends: 1956 [2023-04-03 03:14:39,039 INFO L226 Difference]: Without dead ends: 1859 [2023-04-03 03:14:39,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:14:39,040 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 5072 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5072 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:39,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5072 Valid, 2453 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:14:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2023-04-03 03:14:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 889. [2023-04-03 03:14:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 864 states have (on average 1.2986111111111112) internal successors, (1122), 885 states have internal predecessors, (1122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1125 transitions. [2023-04-03 03:14:39,416 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1125 transitions. Word has length 100 [2023-04-03 03:14:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:39,416 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1125 transitions. [2023-04-03 03:14:39,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1125 transitions. [2023-04-03 03:14:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:39,417 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:39,417 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] [2023-04-03 03:14:39,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-04-03 03:14:39,417 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:39,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash 244029529, now seen corresponding path program 1 times [2023-04-03 03:14:39,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:39,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154698161] [2023-04-03 03:14:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:39,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:39,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154698161] [2023-04-03 03:14:39,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154698161] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:39,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:39,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:39,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45202629] [2023-04-03 03:14:39,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:39,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:39,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:39,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:39,751 INFO L87 Difference]: Start difference. First operand 889 states and 1125 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:41,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:41,742 INFO L93 Difference]: Finished difference Result 1494 states and 1908 transitions. [2023-04-03 03:14:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:41,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:41,744 INFO L225 Difference]: With dead ends: 1494 [2023-04-03 03:14:41,744 INFO L226 Difference]: Without dead ends: 1400 [2023-04-03 03:14:41,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:14:41,745 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 3457 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:41,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3457 Valid, 2336 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:14:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-04-03 03:14:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 889. [2023-04-03 03:14:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 864 states have (on average 1.2974537037037037) internal successors, (1121), 885 states have internal predecessors, (1121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1124 transitions. [2023-04-03 03:14:42,151 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1124 transitions. Word has length 100 [2023-04-03 03:14:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:42,151 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1124 transitions. [2023-04-03 03:14:42,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1124 transitions. [2023-04-03 03:14:42,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:42,153 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:42,153 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] [2023-04-03 03:14:42,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-04-03 03:14:42,153 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:42,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:42,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1706217670, now seen corresponding path program 1 times [2023-04-03 03:14:42,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:42,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492364252] [2023-04-03 03:14:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:42,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:42,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:42,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492364252] [2023-04-03 03:14:42,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492364252] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:42,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:42,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:14:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361954453] [2023-04-03 03:14:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:42,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:14:42,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:42,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:14:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:14:42,542 INFO L87 Difference]: Start difference. First operand 889 states and 1124 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:46,246 INFO L93 Difference]: Finished difference Result 1957 states and 2531 transitions. [2023-04-03 03:14:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:14:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:46,248 INFO L225 Difference]: With dead ends: 1957 [2023-04-03 03:14:46,248 INFO L226 Difference]: Without dead ends: 1863 [2023-04-03 03:14:46,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:14:46,249 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 6028 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6028 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:46,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6028 Valid, 2781 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:14:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2023-04-03 03:14:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 893. [2023-04-03 03:14:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 868 states have (on average 1.2960829493087558) internal successors, (1125), 889 states have internal predecessors, (1125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1128 transitions. [2023-04-03 03:14:46,636 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1128 transitions. Word has length 100 [2023-04-03 03:14:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:46,636 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1128 transitions. [2023-04-03 03:14:46,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1128 transitions. [2023-04-03 03:14:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:14:46,638 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:46,638 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] [2023-04-03 03:14:46,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-04-03 03:14:46,638 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:46,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1889439439, now seen corresponding path program 1 times [2023-04-03 03:14:46,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:46,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566162307] [2023-04-03 03:14:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:46,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:47,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:47,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566162307] [2023-04-03 03:14:47,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566162307] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:47,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:47,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-03 03:14:47,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64323300] [2023-04-03 03:14:47,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:47,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-03 03:14:47,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-03 03:14:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-04-03 03:14:47,419 INFO L87 Difference]: Start difference. First operand 893 states and 1128 transitions. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:49,394 INFO L93 Difference]: Finished difference Result 1284 states and 1628 transitions. [2023-04-03 03:14:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 03:14:49,394 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:14:49,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:49,395 INFO L225 Difference]: With dead ends: 1284 [2023-04-03 03:14:49,395 INFO L226 Difference]: Without dead ends: 968 [2023-04-03 03:14:49,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2023-04-03 03:14:49,396 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 1996 mSDsluCounter, 4209 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 4851 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:49,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1996 Valid, 4851 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:14:49,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-04-03 03:14:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 792. [2023-04-03 03:14:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 768 states have (on average 1.29296875) internal successors, (993), 788 states have internal predecessors, (993), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 996 transitions. [2023-04-03 03:14:49,766 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 996 transitions. Word has length 100 [2023-04-03 03:14:49,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:49,766 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 996 transitions. [2023-04-03 03:14:49,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 996 transitions. [2023-04-03 03:14:49,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:14:49,767 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:49,767 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] [2023-04-03 03:14:49,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-04-03 03:14:49,768 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:49,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash 223948678, now seen corresponding path program 1 times [2023-04-03 03:14:49,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:49,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332138364] [2023-04-03 03:14:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:49,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:49,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:49,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332138364] [2023-04-03 03:14:49,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332138364] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:49,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:49,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:49,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634942219] [2023-04-03 03:14:50,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:50,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:50,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:50,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:50,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:50,000 INFO L87 Difference]: Start difference. First operand 792 states and 996 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:51,863 INFO L93 Difference]: Finished difference Result 1373 states and 1748 transitions. [2023-04-03 03:14:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:51,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-04-03 03:14:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:51,865 INFO L225 Difference]: With dead ends: 1373 [2023-04-03 03:14:51,865 INFO L226 Difference]: Without dead ends: 1273 [2023-04-03 03:14:51,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:14:51,866 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1576 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:51,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 2003 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:14:51,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-04-03 03:14:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 784. [2023-04-03 03:14:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 760 states have (on average 1.293421052631579) internal successors, (983), 780 states have internal predecessors, (983), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 986 transitions. [2023-04-03 03:14:52,249 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 986 transitions. Word has length 101 [2023-04-03 03:14:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:52,249 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 986 transitions. [2023-04-03 03:14:52,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 986 transitions. [2023-04-03 03:14:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:14:52,250 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:52,250 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] [2023-04-03 03:14:52,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-04-03 03:14:52,250 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:52,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:52,250 INFO L85 PathProgramCache]: Analyzing trace with hash 234031666, now seen corresponding path program 1 times [2023-04-03 03:14:52,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:52,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892228169] [2023-04-03 03:14:52,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:52,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:52,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:52,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892228169] [2023-04-03 03:14:52,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892228169] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:52,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:52,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386488205] [2023-04-03 03:14:52,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:52,472 INFO L87 Difference]: Start difference. First operand 784 states and 986 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:54,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:54,335 INFO L93 Difference]: Finished difference Result 1369 states and 1741 transitions. [2023-04-03 03:14:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:54,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-04-03 03:14:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:54,337 INFO L225 Difference]: With dead ends: 1369 [2023-04-03 03:14:54,337 INFO L226 Difference]: Without dead ends: 1273 [2023-04-03 03:14:54,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:14:54,338 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1574 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:54,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 2011 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:14:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-04-03 03:14:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 776. [2023-04-03 03:14:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 752 states have (on average 1.2938829787234043) internal successors, (973), 772 states have internal predecessors, (973), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 976 transitions. [2023-04-03 03:14:54,735 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 976 transitions. Word has length 101 [2023-04-03 03:14:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:54,735 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 976 transitions. [2023-04-03 03:14:54,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 976 transitions. [2023-04-03 03:14:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:14:54,736 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:54,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:14:54,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-04-03 03:14:54,737 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:54,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2090335067, now seen corresponding path program 1 times [2023-04-03 03:14:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:54,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813697669] [2023-04-03 03:14:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:54,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:54,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813697669] [2023-04-03 03:14:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813697669] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:54,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:54,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:54,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893397944] [2023-04-03 03:14:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:54,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:54,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:54,982 INFO L87 Difference]: Start difference. First operand 776 states and 976 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:56,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:56,844 INFO L93 Difference]: Finished difference Result 1278 states and 1615 transitions. [2023-04-03 03:14:56,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:56,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-04-03 03:14:56,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:56,846 INFO L225 Difference]: With dead ends: 1278 [2023-04-03 03:14:56,846 INFO L226 Difference]: Without dead ends: 1273 [2023-04-03 03:14:56,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:14:56,847 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 2895 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2895 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:56,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2895 Valid, 2024 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:14:56,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-04-03 03:14:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 768. [2023-04-03 03:14:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 744 states have (on average 1.2943548387096775) internal successors, (963), 764 states have internal predecessors, (963), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 966 transitions. [2023-04-03 03:14:57,223 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 966 transitions. Word has length 101 [2023-04-03 03:14:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:57,223 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 966 transitions. [2023-04-03 03:14:57,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 966 transitions. [2023-04-03 03:14:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:14:57,225 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:57,225 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] [2023-04-03 03:14:57,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-04-03 03:14:57,225 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:57,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1217484060, now seen corresponding path program 1 times [2023-04-03 03:14:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924780345] [2023-04-03 03:14:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:57,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:14:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:14:57,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:14:57,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924780345] [2023-04-03 03:14:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924780345] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:14:57,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:14:57,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:14:57,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428013852] [2023-04-03 03:14:57,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:14:57,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:14:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:14:57,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:14:57,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:14:57,442 INFO L87 Difference]: Start difference. First operand 768 states and 966 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:14:59,319 INFO L93 Difference]: Finished difference Result 1278 states and 1613 transitions. [2023-04-03 03:14:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:14:59,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-04-03 03:14:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:14:59,321 INFO L225 Difference]: With dead ends: 1278 [2023-04-03 03:14:59,321 INFO L226 Difference]: Without dead ends: 1273 [2023-04-03 03:14:59,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:14:59,321 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1555 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:14:59,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2038 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:14:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-04-03 03:14:59,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 760. [2023-04-03 03:14:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 736 states have (on average 1.294836956521739) internal successors, (953), 756 states have internal predecessors, (953), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 956 transitions. [2023-04-03 03:14:59,694 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 956 transitions. Word has length 101 [2023-04-03 03:14:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:14:59,694 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 956 transitions. [2023-04-03 03:14:59,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:14:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 956 transitions. [2023-04-03 03:14:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:14:59,695 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:14:59,695 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] [2023-04-03 03:14:59,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-04-03 03:14:59,695 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:14:59,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:14:59,696 INFO L85 PathProgramCache]: Analyzing trace with hash -902588543, now seen corresponding path program 1 times [2023-04-03 03:14:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:14:59,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217755091] [2023-04-03 03:14:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:14:59,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:14:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:00,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:00,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217755091] [2023-04-03 03:15:00,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217755091] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:00,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:00,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:00,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610679256] [2023-04-03 03:15:00,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:00,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:00,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:00,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:00,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:00,174 INFO L87 Difference]: Start difference. First operand 760 states and 956 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:02,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:02,465 INFO L93 Difference]: Finished difference Result 1637 states and 2112 transitions. [2023-04-03 03:15:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:15:02,465 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-04-03 03:15:02,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:02,467 INFO L225 Difference]: With dead ends: 1637 [2023-04-03 03:15:02,467 INFO L226 Difference]: Without dead ends: 1497 [2023-04-03 03:15:02,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:15:02,468 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 2540 mSDsluCounter, 5228 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 6214 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:02,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 6214 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:15:02,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-04-03 03:15:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 712. [2023-04-03 03:15:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 689 states have (on average 1.2902757619738752) internal successors, (889), 708 states have internal predecessors, (889), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 892 transitions. [2023-04-03 03:15:02,850 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 892 transitions. Word has length 101 [2023-04-03 03:15:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:02,850 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 892 transitions. [2023-04-03 03:15:02,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 892 transitions. [2023-04-03 03:15:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:15:02,851 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:02,851 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] [2023-04-03 03:15:02,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-04-03 03:15:02,852 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:02,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:02,852 INFO L85 PathProgramCache]: Analyzing trace with hash -647112058, now seen corresponding path program 1 times [2023-04-03 03:15:02,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:02,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976243508] [2023-04-03 03:15:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:02,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:03,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976243508] [2023-04-03 03:15:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976243508] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:03,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:03,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:03,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700213302] [2023-04-03 03:15:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:03,415 INFO L87 Difference]: Start difference. First operand 712 states and 892 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:05,017 INFO L93 Difference]: Finished difference Result 1115 states and 1395 transitions. [2023-04-03 03:15:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:15:05,017 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:15:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:05,018 INFO L225 Difference]: With dead ends: 1115 [2023-04-03 03:15:05,018 INFO L226 Difference]: Without dead ends: 1017 [2023-04-03 03:15:05,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:15:05,019 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 2864 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2864 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:05,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2864 Valid, 2561 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:15:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2023-04-03 03:15:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 702. [2023-04-03 03:15:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 680 states have (on average 1.285294117647059) internal successors, (874), 698 states have internal predecessors, (874), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 877 transitions. [2023-04-03 03:15:05,418 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 877 transitions. Word has length 102 [2023-04-03 03:15:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:05,419 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 877 transitions. [2023-04-03 03:15:05,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 877 transitions. [2023-04-03 03:15:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:15:05,420 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:05,420 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] [2023-04-03 03:15:05,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-04-03 03:15:05,420 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:05,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:05,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2711545, now seen corresponding path program 1 times [2023-04-03 03:15:05,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:05,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866427112] [2023-04-03 03:15:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:05,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:07,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866427112] [2023-04-03 03:15:07,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866427112] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:07,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:07,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2023-04-03 03:15:07,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942447763] [2023-04-03 03:15:07,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:07,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-03 03:15:07,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:07,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-03 03:15:07,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=977, Unknown=0, NotChecked=0, Total=1056 [2023-04-03 03:15:07,336 INFO L87 Difference]: Start difference. First operand 702 states and 877 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:14,670 INFO L93 Difference]: Finished difference Result 1371 states and 1732 transitions. [2023-04-03 03:15:14,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-03 03:15:14,670 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:15:14,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:14,672 INFO L225 Difference]: With dead ends: 1371 [2023-04-03 03:15:14,672 INFO L226 Difference]: Without dead ends: 1272 [2023-04-03 03:15:14,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=520, Invalid=3262, Unknown=0, NotChecked=0, Total=3782 [2023-04-03 03:15:14,673 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 3064 mSDsluCounter, 14187 mSDsCounter, 0 mSdLazyCounter, 8168 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 14969 SdHoareTripleChecker+Invalid, 8221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 8168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:14,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3064 Valid, 14969 Invalid, 8221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 8168 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-03 03:15:14,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2023-04-03 03:15:15,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 721. [2023-04-03 03:15:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 699 states have (on average 1.284692417739628) internal successors, (898), 717 states have internal predecessors, (898), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 901 transitions. [2023-04-03 03:15:15,089 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 901 transitions. Word has length 102 [2023-04-03 03:15:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:15,090 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 901 transitions. [2023-04-03 03:15:15,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 901 transitions. [2023-04-03 03:15:15,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:15:15,091 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:15,091 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] [2023-04-03 03:15:15,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-04-03 03:15:15,091 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:15,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1564041392, now seen corresponding path program 1 times [2023-04-03 03:15:15,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:15,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546083783] [2023-04-03 03:15:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:15,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:15,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:15,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546083783] [2023-04-03 03:15:15,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546083783] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:15,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:15,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310730550] [2023-04-03 03:15:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:15,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:15,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:15,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:15,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:15,586 INFO L87 Difference]: Start difference. First operand 721 states and 901 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:17,182 INFO L93 Difference]: Finished difference Result 1126 states and 1404 transitions. [2023-04-03 03:15:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:15:17,182 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:15:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:17,183 INFO L225 Difference]: With dead ends: 1126 [2023-04-03 03:15:17,183 INFO L226 Difference]: Without dead ends: 1028 [2023-04-03 03:15:17,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:15:17,184 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 2903 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2903 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:17,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2903 Valid, 2860 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:15:17,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-04-03 03:15:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 709. [2023-04-03 03:15:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 688 states have (on average 1.2805232558139534) internal successors, (881), 705 states have internal predecessors, (881), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 884 transitions. [2023-04-03 03:15:17,600 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 884 transitions. Word has length 102 [2023-04-03 03:15:17,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:17,600 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 884 transitions. [2023-04-03 03:15:17,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 884 transitions. [2023-04-03 03:15:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:15:17,601 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:17,601 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] [2023-04-03 03:15:17,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-04-03 03:15:17,601 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:17,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:17,601 INFO L85 PathProgramCache]: Analyzing trace with hash 942616020, now seen corresponding path program 1 times [2023-04-03 03:15:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:17,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328374474] [2023-04-03 03:15:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:17,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:18,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:18,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328374474] [2023-04-03 03:15:18,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328374474] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:18,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:18,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417010682] [2023-04-03 03:15:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:18,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:18,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:18,102 INFO L87 Difference]: Start difference. First operand 709 states and 884 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:20,386 INFO L93 Difference]: Finished difference Result 1583 states and 2025 transitions. [2023-04-03 03:15:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:15:20,386 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:15:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:20,388 INFO L225 Difference]: With dead ends: 1583 [2023-04-03 03:15:20,388 INFO L226 Difference]: Without dead ends: 1379 [2023-04-03 03:15:20,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:15:20,389 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 2690 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 3943 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:20,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 3943 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:15:20,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2023-04-03 03:15:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 597. [2023-04-03 03:15:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 580 states have (on average 1.2672413793103448) internal successors, (735), 593 states have internal predecessors, (735), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 738 transitions. [2023-04-03 03:15:20,786 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 738 transitions. Word has length 102 [2023-04-03 03:15:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:20,787 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 738 transitions. [2023-04-03 03:15:20,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:20,787 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 738 transitions. [2023-04-03 03:15:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:15:20,787 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:20,788 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] [2023-04-03 03:15:20,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-04-03 03:15:20,788 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:20,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1318103961, now seen corresponding path program 1 times [2023-04-03 03:15:20,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:20,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388956227] [2023-04-03 03:15:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:20,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:21,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:21,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388956227] [2023-04-03 03:15:21,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388956227] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:21,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:21,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:21,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000560446] [2023-04-03 03:15:21,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:21,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:21,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:21,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:21,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:21,294 INFO L87 Difference]: Start difference. First operand 597 states and 738 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:23,457 INFO L93 Difference]: Finished difference Result 1366 states and 1749 transitions. [2023-04-03 03:15:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:15:23,457 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:15:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:23,459 INFO L225 Difference]: With dead ends: 1366 [2023-04-03 03:15:23,459 INFO L226 Difference]: Without dead ends: 1184 [2023-04-03 03:15:23,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:15:23,460 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 2658 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:23,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2658 Valid, 3175 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:15:23,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2023-04-03 03:15:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 507. [2023-04-03 03:15:23,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 491 states have (on average 1.2545824847250509) internal successors, (616), 503 states have internal predecessors, (616), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 619 transitions. [2023-04-03 03:15:23,826 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 619 transitions. Word has length 102 [2023-04-03 03:15:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:23,826 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 619 transitions. [2023-04-03 03:15:23,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:23,826 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 619 transitions. [2023-04-03 03:15:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:15:23,827 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:23,827 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] [2023-04-03 03:15:23,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-04-03 03:15:23,827 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:23,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:23,827 INFO L85 PathProgramCache]: Analyzing trace with hash -894091600, now seen corresponding path program 1 times [2023-04-03 03:15:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:23,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814301358] [2023-04-03 03:15:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:23,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:24,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:24,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814301358] [2023-04-03 03:15:24,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814301358] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:24,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:24,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860375813] [2023-04-03 03:15:24,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:24,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:24,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:24,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:24,231 INFO L87 Difference]: Start difference. First operand 507 states and 619 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:25,519 INFO L93 Difference]: Finished difference Result 902 states and 1136 transitions. [2023-04-03 03:15:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:15:25,520 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:15:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:25,521 INFO L225 Difference]: With dead ends: 902 [2023-04-03 03:15:25,521 INFO L226 Difference]: Without dead ends: 702 [2023-04-03 03:15:25,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:15:25,521 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 1434 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:25,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 2941 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:15:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-04-03 03:15:25,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 399. [2023-04-03 03:15:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 387 states have (on average 1.2428940568475453) internal successors, (481), 395 states have internal predecessors, (481), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 484 transitions. [2023-04-03 03:15:25,894 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 484 transitions. Word has length 102 [2023-04-03 03:15:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:25,895 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 484 transitions. [2023-04-03 03:15:25,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 484 transitions. [2023-04-03 03:15:25,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:15:25,895 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:25,895 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] [2023-04-03 03:15:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-04-03 03:15:25,896 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:25,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash 920507382, now seen corresponding path program 1 times [2023-04-03 03:15:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:25,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239559071] [2023-04-03 03:15:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:26,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:26,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239559071] [2023-04-03 03:15:26,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239559071] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:26,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:26,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:15:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829478985] [2023-04-03 03:15:26,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:26,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:15:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:26,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:15:26,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:15:26,109 INFO L87 Difference]: Start difference. First operand 399 states and 484 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:27,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:27,786 INFO L93 Difference]: Finished difference Result 853 states and 1076 transitions. [2023-04-03 03:15:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:15:27,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:15:27,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:27,788 INFO L225 Difference]: With dead ends: 853 [2023-04-03 03:15:27,788 INFO L226 Difference]: Without dead ends: 756 [2023-04-03 03:15:27,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:15:27,788 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 867 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:27,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1077 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:15:27,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-04-03 03:15:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 395. [2023-04-03 03:15:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 383 states have (on average 1.2428198433420365) internal successors, (476), 391 states have internal predecessors, (476), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 479 transitions. [2023-04-03 03:15:28,144 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 479 transitions. Word has length 102 [2023-04-03 03:15:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:28,144 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 479 transitions. [2023-04-03 03:15:28,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 479 transitions. [2023-04-03 03:15:28,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:15:28,145 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:28,145 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] [2023-04-03 03:15:28,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-04-03 03:15:28,145 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:28,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:28,145 INFO L85 PathProgramCache]: Analyzing trace with hash 360231352, now seen corresponding path program 1 times [2023-04-03 03:15:28,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:28,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613470306] [2023-04-03 03:15:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:28,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:28,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613470306] [2023-04-03 03:15:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613470306] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:28,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:28,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:15:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703556418] [2023-04-03 03:15:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:28,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:15:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:15:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:15:28,384 INFO L87 Difference]: Start difference. First operand 395 states and 479 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:29,462 INFO L93 Difference]: Finished difference Result 575 states and 700 transitions. [2023-04-03 03:15:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:15:29,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-03 03:15:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:29,463 INFO L225 Difference]: With dead ends: 575 [2023-04-03 03:15:29,463 INFO L226 Difference]: Without dead ends: 568 [2023-04-03 03:15:29,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:15:29,464 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1578 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:29,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 891 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:15:29,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-04-03 03:15:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 395. [2023-04-03 03:15:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 383 states have (on average 1.2402088772845954) internal successors, (475), 391 states have internal predecessors, (475), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 478 transitions. [2023-04-03 03:15:29,814 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 478 transitions. Word has length 103 [2023-04-03 03:15:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:29,814 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 478 transitions. [2023-04-03 03:15:29,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 478 transitions. [2023-04-03 03:15:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:15:29,815 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:29,815 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] [2023-04-03 03:15:29,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-04-03 03:15:29,815 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:29,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:29,816 INFO L85 PathProgramCache]: Analyzing trace with hash -664427507, now seen corresponding path program 1 times [2023-04-03 03:15:29,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:29,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118616707] [2023-04-03 03:15:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:30,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:30,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118616707] [2023-04-03 03:15:30,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118616707] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:30,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:30,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:15:30,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259125237] [2023-04-03 03:15:30,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:30,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:15:30,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:15:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:15:30,040 INFO L87 Difference]: Start difference. First operand 395 states and 478 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:31,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:31,756 INFO L93 Difference]: Finished difference Result 892 states and 1125 transitions. [2023-04-03 03:15:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:15:31,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-03 03:15:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:31,757 INFO L225 Difference]: With dead ends: 892 [2023-04-03 03:15:31,757 INFO L226 Difference]: Without dead ends: 770 [2023-04-03 03:15:31,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:15:31,758 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 838 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:31,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1170 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:15:31,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-04-03 03:15:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 395. [2023-04-03 03:15:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 383 states have (on average 1.2349869451697129) internal successors, (473), 391 states have internal predecessors, (473), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 476 transitions. [2023-04-03 03:15:32,120 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 476 transitions. Word has length 103 [2023-04-03 03:15:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:32,120 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 476 transitions. [2023-04-03 03:15:32,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 476 transitions. [2023-04-03 03:15:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:15:32,120 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:32,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:15:32,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-04-03 03:15:32,121 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:32,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2055717019, now seen corresponding path program 1 times [2023-04-03 03:15:32,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:32,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614923907] [2023-04-03 03:15:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:32,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:32,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:32,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614923907] [2023-04-03 03:15:32,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614923907] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:32,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:32,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:32,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230553777] [2023-04-03 03:15:32,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:32,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:32,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:32,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:32,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:32,552 INFO L87 Difference]: Start difference. First operand 395 states and 476 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:34,953 INFO L93 Difference]: Finished difference Result 1192 states and 1510 transitions. [2023-04-03 03:15:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:15:34,954 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-03 03:15:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:34,955 INFO L225 Difference]: With dead ends: 1192 [2023-04-03 03:15:34,955 INFO L226 Difference]: Without dead ends: 1050 [2023-04-03 03:15:34,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:15:34,956 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 1534 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:34,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 3924 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:15:34,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2023-04-03 03:15:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 334. [2023-04-03 03:15:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 324 states have (on average 1.2191358024691359) internal successors, (395), 330 states have internal predecessors, (395), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 398 transitions. [2023-04-03 03:15:35,311 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 398 transitions. Word has length 103 [2023-04-03 03:15:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:35,311 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 398 transitions. [2023-04-03 03:15:35,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 398 transitions. [2023-04-03 03:15:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:15:35,312 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:35,312 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] [2023-04-03 03:15:35,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-04-03 03:15:35,312 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr18ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:35,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:35,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1667114308, now seen corresponding path program 1 times [2023-04-03 03:15:35,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:35,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301297661] [2023-04-03 03:15:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:35,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:35,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:35,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301297661] [2023-04-03 03:15:35,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301297661] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:35,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:35,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:35,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187616159] [2023-04-03 03:15:35,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:35,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:35,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:35,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:35,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:35,797 INFO L87 Difference]: Start difference. First operand 334 states and 398 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:38,256 INFO L93 Difference]: Finished difference Result 1002 states and 1275 transitions. [2023-04-03 03:15:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:15:38,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-03 03:15:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:38,257 INFO L225 Difference]: With dead ends: 1002 [2023-04-03 03:15:38,257 INFO L226 Difference]: Without dead ends: 899 [2023-04-03 03:15:38,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:15:38,258 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1624 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:38,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 3100 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:15:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2023-04-03 03:15:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 323. [2023-04-03 03:15:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 314 states have (on average 1.213375796178344) internal successors, (381), 319 states have internal predecessors, (381), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 384 transitions. [2023-04-03 03:15:38,623 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 384 transitions. Word has length 103 [2023-04-03 03:15:38,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:38,623 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 384 transitions. [2023-04-03 03:15:38,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 384 transitions. [2023-04-03 03:15:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:15:38,624 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:38,624 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] [2023-04-03 03:15:38,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-04-03 03:15:38,624 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:38,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1061100051, now seen corresponding path program 1 times [2023-04-03 03:15:38,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:38,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358134237] [2023-04-03 03:15:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:38,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:39,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358134237] [2023-04-03 03:15:39,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358134237] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:39,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:39,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 03:15:39,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232867495] [2023-04-03 03:15:39,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:39,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 03:15:39,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:39,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 03:15:39,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 03:15:39,003 INFO L87 Difference]: Start difference. First operand 323 states and 384 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:40,288 INFO L93 Difference]: Finished difference Result 649 states and 803 transitions. [2023-04-03 03:15:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:15:40,288 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-03 03:15:40,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:40,289 INFO L225 Difference]: With dead ends: 649 [2023-04-03 03:15:40,289 INFO L226 Difference]: Without dead ends: 493 [2023-04-03 03:15:40,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:15:40,290 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1060 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:40,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1190 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:15:40,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-04-03 03:15:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 259. [2023-04-03 03:15:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 253 states have (on average 1.2015810276679841) internal successors, (304), 255 states have internal predecessors, (304), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 307 transitions. [2023-04-03 03:15:40,629 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 307 transitions. Word has length 103 [2023-04-03 03:15:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:40,630 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 307 transitions. [2023-04-03 03:15:40,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 307 transitions. [2023-04-03 03:15:40,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-03 03:15:40,630 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:40,630 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] [2023-04-03 03:15:40,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-04-03 03:15:40,630 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:40,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash -30733073, now seen corresponding path program 1 times [2023-04-03 03:15:40,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:40,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504368185] [2023-04-03 03:15:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:40,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:42,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:42,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504368185] [2023-04-03 03:15:42,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504368185] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:42,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:42,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-04-03 03:15:42,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536635154] [2023-04-03 03:15:42,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:42,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-03 03:15:42,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-03 03:15:42,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2023-04-03 03:15:42,537 INFO L87 Difference]: Start difference. First operand 259 states and 307 transitions. Second operand has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:45,550 INFO L93 Difference]: Finished difference Result 309 states and 360 transitions. [2023-04-03 03:15:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-03 03:15:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-03 03:15:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:45,551 INFO L225 Difference]: With dead ends: 309 [2023-04-03 03:15:45,551 INFO L226 Difference]: Without dead ends: 301 [2023-04-03 03:15:45,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=566, Invalid=3094, Unknown=0, NotChecked=0, Total=3660 [2023-04-03 03:15:45,551 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 698 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:45,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 2510 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:15:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-04-03 03:15:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 278. [2023-04-03 03:15:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.2022058823529411) internal successors, (327), 274 states have internal predecessors, (327), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 330 transitions. [2023-04-03 03:15:45,898 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 330 transitions. Word has length 105 [2023-04-03 03:15:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:45,898 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 330 transitions. [2023-04-03 03:15:45,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 330 transitions. [2023-04-03 03:15:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-03 03:15:45,898 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:45,898 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] [2023-04-03 03:15:45,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-04-03 03:15:45,899 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:45,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:45,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1674271837, now seen corresponding path program 1 times [2023-04-03 03:15:45,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:45,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086365223] [2023-04-03 03:15:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:45,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:46,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086365223] [2023-04-03 03:15:46,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086365223] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:46,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:46,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:46,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522176832] [2023-04-03 03:15:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:46,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:46,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:46,392 INFO L87 Difference]: Start difference. First operand 278 states and 330 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:48,173 INFO L93 Difference]: Finished difference Result 608 states and 762 transitions. [2023-04-03 03:15:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:15:48,173 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-03 03:15:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:48,174 INFO L225 Difference]: With dead ends: 608 [2023-04-03 03:15:48,174 INFO L226 Difference]: Without dead ends: 602 [2023-04-03 03:15:48,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:15:48,175 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 935 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:48,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 1790 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:15:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-04-03 03:15:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 272. [2023-04-03 03:15:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 267 states have (on average 1.198501872659176) internal successors, (320), 268 states have internal predecessors, (320), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 323 transitions. [2023-04-03 03:15:48,520 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 323 transitions. Word has length 105 [2023-04-03 03:15:48,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:48,521 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 323 transitions. [2023-04-03 03:15:48,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:48,521 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 323 transitions. [2023-04-03 03:15:48,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-03 03:15:48,521 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:48,521 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] [2023-04-03 03:15:48,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-04-03 03:15:48,521 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:48,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1172414629, now seen corresponding path program 1 times [2023-04-03 03:15:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:48,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364657447] [2023-04-03 03:15:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:48,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:49,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:49,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364657447] [2023-04-03 03:15:49,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364657447] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:49,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:49,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:49,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483182643] [2023-04-03 03:15:49,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:49,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:49,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:49,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:49,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:49,003 INFO L87 Difference]: Start difference. First operand 272 states and 323 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:50,848 INFO L93 Difference]: Finished difference Result 638 states and 801 transitions. [2023-04-03 03:15:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:15:50,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2023-04-03 03:15:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:50,849 INFO L225 Difference]: With dead ends: 638 [2023-04-03 03:15:50,850 INFO L226 Difference]: Without dead ends: 623 [2023-04-03 03:15:50,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:15:50,850 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 701 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:50,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 2055 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:15:50,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-04-03 03:15:51,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 241. [2023-04-03 03:15:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 237 states have (on average 1.1940928270042195) internal successors, (283), 237 states have internal predecessors, (283), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 286 transitions. [2023-04-03 03:15:51,197 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 286 transitions. Word has length 106 [2023-04-03 03:15:51,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:51,197 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 286 transitions. [2023-04-03 03:15:51,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:51,197 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 286 transitions. [2023-04-03 03:15:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-03 03:15:51,198 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:51,198 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] [2023-04-03 03:15:51,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-04-03 03:15:51,198 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:51,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash -410543066, now seen corresponding path program 1 times [2023-04-03 03:15:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:51,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985122370] [2023-04-03 03:15:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:51,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:51,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:51,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985122370] [2023-04-03 03:15:51,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985122370] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:51,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:51,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:15:51,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713910007] [2023-04-03 03:15:51,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:51,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:15:51,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:51,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:15:51,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:15:51,331 INFO L87 Difference]: Start difference. First operand 241 states and 286 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:51,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:51,891 INFO L93 Difference]: Finished difference Result 341 states and 420 transitions. [2023-04-03 03:15:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:15:51,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2023-04-03 03:15:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:51,892 INFO L225 Difference]: With dead ends: 341 [2023-04-03 03:15:51,892 INFO L226 Difference]: Without dead ends: 294 [2023-04-03 03:15:51,892 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 [2023-04-03 03:15:51,893 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 75 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 346 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 [2023-04-03 03:15:51,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 346 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:15:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-04-03 03:15:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 284. [2023-04-03 03:15:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 280 states have (on average 1.2142857142857142) internal successors, (340), 280 states have internal predecessors, (340), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 343 transitions. [2023-04-03 03:15:52,433 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 343 transitions. Word has length 123 [2023-04-03 03:15:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:52,433 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 343 transitions. [2023-04-03 03:15:52,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:52,434 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 343 transitions. [2023-04-03 03:15:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-03 03:15:52,434 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:52,434 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] [2023-04-03 03:15:52,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-04-03 03:15:52,434 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:52,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:52,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1606824953, now seen corresponding path program 1 times [2023-04-03 03:15:52,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:52,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921990490] [2023-04-03 03:15:52,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:52,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:52,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:52,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921990490] [2023-04-03 03:15:52,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921990490] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:52,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:52,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:15:52,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790811583] [2023-04-03 03:15:52,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:52,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:15:52,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:52,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:15:52,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:15:52,560 INFO L87 Difference]: Start difference. First operand 284 states and 343 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:53,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:53,490 INFO L93 Difference]: Finished difference Result 550 states and 701 transitions. [2023-04-03 03:15:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:15:53,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-03 03:15:53,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:53,492 INFO L225 Difference]: With dead ends: 550 [2023-04-03 03:15:53,492 INFO L226 Difference]: Without dead ends: 417 [2023-04-03 03:15:53,492 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 [2023-04-03 03:15:53,492 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 68 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 346 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 [2023-04-03 03:15:53,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 346 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:15:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-04-03 03:15:54,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 403. [2023-04-03 03:15:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 399 states have (on average 1.2531328320802004) internal successors, (500), 399 states have internal predecessors, (500), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:54,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 503 transitions. [2023-04-03 03:15:54,360 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 503 transitions. Word has length 126 [2023-04-03 03:15:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:54,360 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 503 transitions. [2023-04-03 03:15:54,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:15:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 503 transitions. [2023-04-03 03:15:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-03 03:15:54,360 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:54,361 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] [2023-04-03 03:15:54,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-04-03 03:15:54,361 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:54,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 158638055, now seen corresponding path program 1 times [2023-04-03 03:15:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:54,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264081871] [2023-04-03 03:15:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:54,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:54,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:54,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264081871] [2023-04-03 03:15:54,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264081871] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:54,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:54,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:15:54,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499033685] [2023-04-03 03:15:54,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:54,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:15:54,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:15:54,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:15:54,484 INFO L87 Difference]: Start difference. First operand 403 states and 503 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)