/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 EqDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:47:05,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:47:05,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:47:05,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:47:05,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:47:05,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:47:05,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:47:05,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:47:05,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:47:05,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:47:05,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:47:05,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-01 12:47:05,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:47:05,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:47:05,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:47:05,629 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 [2023-04-01 12:47:05,642 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:47:05,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:47:05,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:47:05,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:47:05,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:47:05,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:47:05,643 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:47:05,643 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:47:05,643 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:47:05,643 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:47:05,644 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:47:05,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:47:05,644 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:47:05,644 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:47:05,644 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:47:05,644 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:47:05,644 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:47:05,645 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:47:05,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:47:05,645 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:47:05,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:47:05,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:47:05,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:47:05,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:47:05,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:47:05,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:47:05,646 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:47:05,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:47:05,646 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:47:05,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:47:05,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:47:05,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:47:05,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:47:05,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:47:05,647 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:47:05,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:47:05,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:47:05,648 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:47:05,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:47:05,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:47:05,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:47:05,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:47:05,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:47:05,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:47:05,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:47:05,851 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:47:05,852 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:47:05,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2023-04-01 12:47:06,877 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:47:07,163 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:47:07,164 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2023-04-01 12:47:07,190 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e2c14fa/4b16fefa1d6149eeb227add9c50b1061/FLAG0754e506a [2023-04-01 12:47:07,199 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e2c14fa/4b16fefa1d6149eeb227add9c50b1061 [2023-04-01 12:47:07,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:47:07,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:47:07,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:47:07,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:47:07,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:47:07,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:47:07" (1/1) ... [2023-04-01 12:47:07,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ffe45f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:07, skipping insertion in model container [2023-04-01 12:47:07,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:47:07" (1/1) ... [2023-04-01 12:47:07,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:47:07,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:47:07,608 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14181,14194] [2023-04-01 12:47:07,632 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18885,18898] [2023-04-01 12:47:07,638 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20177,20190] [2023-04-01 12:47:07,645 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20935,20948] [2023-04-01 12:47:07,652 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22598,22611] [2023-04-01 12:47:07,656 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23356,23369] [2023-04-01 12:47:07,670 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24485,24498] [2023-04-01 12:47:07,679 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27110,27123] [2023-04-01 12:47:07,682 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27871,27884] [2023-04-01 12:47:07,686 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29003,29016] [2023-04-01 12:47:07,693 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31094,31107] [2023-04-01 12:47:07,705 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35189,35202] [2023-04-01 12:47:07,708 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35950,35963] [2023-04-01 12:47:07,712 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37043,37056] [2023-04-01 12:47:07,718 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39095,39108] [2023-04-01 12:47:07,733 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42827,42840] [2023-04-01 12:47:07,752 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50005,50018] [2023-04-01 12:47:07,756 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50766,50779] [2023-04-01 12:47:07,759 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51898,51911] [2023-04-01 12:47:07,765 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[53989,54002] [2023-04-01 12:47:07,774 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57550,57563] [2023-04-01 12:47:07,799 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63548,63561] [2023-04-01 12:47:08,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:47:08,082 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:47:08,152 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14181,14194] [2023-04-01 12:47:08,175 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18885,18898] [2023-04-01 12:47:08,179 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20177,20190] [2023-04-01 12:47:08,204 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20935,20948] [2023-04-01 12:47:08,208 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22598,22611] [2023-04-01 12:47:08,210 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23356,23369] [2023-04-01 12:47:08,213 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24485,24498] [2023-04-01 12:47:08,218 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27110,27123] [2023-04-01 12:47:08,220 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27871,27884] [2023-04-01 12:47:08,223 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29003,29016] [2023-04-01 12:47:08,227 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31094,31107] [2023-04-01 12:47:08,234 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35189,35202] [2023-04-01 12:47:08,237 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35950,35963] [2023-04-01 12:47:08,240 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37043,37056] [2023-04-01 12:47:08,245 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39095,39108] [2023-04-01 12:47:08,253 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42827,42840] [2023-04-01 12:47:08,274 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50005,50018] [2023-04-01 12:47:08,277 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50766,50779] [2023-04-01 12:47:08,279 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51898,51911] [2023-04-01 12:47:08,286 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[53989,54002] [2023-04-01 12:47:08,294 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57550,57563] [2023-04-01 12:47:08,304 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.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63548,63561] [2023-04-01 12:47:08,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:47:08,466 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:47:08,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08 WrapperNode [2023-04-01 12:47:08,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:47:08,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:47:08,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:47:08,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:47:08,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (1/1) ... [2023-04-01 12:47:08,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (1/1) ... [2023-04-01 12:47:08,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (1/1) ... [2023-04-01 12:47:08,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (1/1) ... [2023-04-01 12:47:08,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (1/1) ... [2023-04-01 12:47:08,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (1/1) ... [2023-04-01 12:47:08,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (1/1) ... [2023-04-01 12:47:08,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (1/1) ... [2023-04-01 12:47:08,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:47:08,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:47:08,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:47:08,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:47:08,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (1/1) ... [2023-04-01 12:47:08,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:47:08,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:47:08,638 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) [2023-04-01 12:47:08,642 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 [2023-04-01 12:47:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:47:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:47:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:47:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 12:47:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:47:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:47:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:47:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:47:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:47:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:47:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:47:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:47:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 12:47:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:47:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:47:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:47:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:47:08,910 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:47:08,911 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:47:10,866 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:47:11,010 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:47:11,011 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 12:47:11,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:47:11 BoogieIcfgContainer [2023-04-01 12:47:11,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:47:11,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:47:11,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:47:11,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:47:11,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:47:07" (1/3) ... [2023-04-01 12:47:11,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b510f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:47:11, skipping insertion in model container [2023-04-01 12:47:11,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:08" (2/3) ... [2023-04-01 12:47:11,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b510f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:47:11, skipping insertion in model container [2023-04-01 12:47:11,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:47:11" (3/3) ... [2023-04-01 12:47:11,022 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2023-04-01 12:47:11,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:47:11,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-04-01 12:47:11,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:47:11,096 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;@51536e5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:47:11,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-04-01 12:47:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 1074 states have (on average 1.8594040968342644) internal successors, (1997), 1097 states have internal predecessors, (1997), 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) [2023-04-01 12:47:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-01 12:47:11,119 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:11,119 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] [2023-04-01 12:47:11,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:11,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash -288267550, now seen corresponding path program 1 times [2023-04-01 12:47:11,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:11,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709299608] [2023-04-01 12:47:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:11,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:11,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709299608] [2023-04-01 12:47:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709299608] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:11,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:11,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:11,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964534040] [2023-04-01 12:47:11,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:11,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:11,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:11,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:11,805 INFO L87 Difference]: Start difference. First operand has 1102 states, 1074 states have (on average 1.8594040968342644) internal successors, (1997), 1097 states have internal predecessors, (1997), 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 17.2) 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) [2023-04-01 12:47:12,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:12,731 INFO L93 Difference]: Finished difference Result 1656 states and 2901 transitions. [2023-04-01 12:47:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:12,734 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 [2023-04-01 12:47:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:12,752 INFO L225 Difference]: With dead ends: 1656 [2023-04-01 12:47:12,756 INFO L226 Difference]: Without dead ends: 937 [2023-04-01 12:47:12,764 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 [2023-04-01 12:47:12,769 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 4685 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4685 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:12,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4685 Valid, 1061 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:47:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-04-01 12:47:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2023-04-01 12:47:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 912 states have (on average 1.268640350877193) internal successors, (1157), 933 states have internal predecessors, (1157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1160 transitions. [2023-04-01 12:47:12,849 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1160 transitions. Word has length 89 [2023-04-01 12:47:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:12,850 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1160 transitions. [2023-04-01 12:47:12,850 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) [2023-04-01 12:47:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1160 transitions. [2023-04-01 12:47:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-01 12:47:12,854 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:12,854 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] [2023-04-01 12:47:12,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:47:12,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:12,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:12,855 INFO L85 PathProgramCache]: Analyzing trace with hash -283410179, now seen corresponding path program 1 times [2023-04-01 12:47:12,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:12,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096386816] [2023-04-01 12:47:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:12,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:13,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:13,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096386816] [2023-04-01 12:47:13,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096386816] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:13,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:13,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:13,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999854296] [2023-04-01 12:47:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:13,085 INFO L87 Difference]: Start difference. First operand 937 states and 1160 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) [2023-04-01 12:47:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:13,489 INFO L93 Difference]: Finished difference Result 1478 states and 1893 transitions. [2023-04-01 12:47:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:13,489 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 [2023-04-01 12:47:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:13,492 INFO L225 Difference]: With dead ends: 1478 [2023-04-01 12:47:13,492 INFO L226 Difference]: Without dead ends: 767 [2023-04-01 12:47:13,493 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 [2023-04-01 12:47:13,494 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 2844 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2844 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:13,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2844 Valid, 561 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:47:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-04-01 12:47:13,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2023-04-01 12:47:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 742 states have (on average 1.307277628032345) internal successors, (970), 763 states have internal predecessors, (970), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 973 transitions. [2023-04-01 12:47:13,520 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 973 transitions. Word has length 90 [2023-04-01 12:47:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:13,522 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 973 transitions. [2023-04-01 12:47:13,522 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) [2023-04-01 12:47:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 973 transitions. [2023-04-01 12:47:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-01 12:47:13,524 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:13,525 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] [2023-04-01 12:47:13,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:47:13,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:13,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:13,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1190320298, now seen corresponding path program 1 times [2023-04-01 12:47:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514277799] [2023-04-01 12:47:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:13,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:13,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:13,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514277799] [2023-04-01 12:47:13,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514277799] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:13,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:13,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:13,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507752879] [2023-04-01 12:47:13,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:13,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:13,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:13,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:13,686 INFO L87 Difference]: Start difference. First operand 767 states and 973 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) [2023-04-01 12:47:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:14,028 INFO L93 Difference]: Finished difference Result 1308 states and 1705 transitions. [2023-04-01 12:47:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:14,029 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 [2023-04-01 12:47:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:14,033 INFO L225 Difference]: With dead ends: 1308 [2023-04-01 12:47:14,033 INFO L226 Difference]: Without dead ends: 685 [2023-04-01 12:47:14,034 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 [2023-04-01 12:47:14,036 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2558 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:14,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 509 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:47:14,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-04-01 12:47:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2023-04-01 12:47:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 660 states have (on average 1.3318181818181818) internal successors, (879), 681 states have internal predecessors, (879), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 882 transitions. [2023-04-01 12:47:14,064 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 882 transitions. Word has length 91 [2023-04-01 12:47:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:14,065 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 882 transitions. [2023-04-01 12:47:14,066 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) [2023-04-01 12:47:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 882 transitions. [2023-04-01 12:47:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-01 12:47:14,067 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:14,067 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] [2023-04-01 12:47:14,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:47:14,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:14,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash 537354979, now seen corresponding path program 1 times [2023-04-01 12:47:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:14,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134248035] [2023-04-01 12:47:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:14,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:14,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:14,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134248035] [2023-04-01 12:47:14,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134248035] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:14,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:14,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:14,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359626309] [2023-04-01 12:47:14,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:14,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:14,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:14,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:14,244 INFO L87 Difference]: Start difference. First operand 685 states and 882 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) [2023-04-01 12:47:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:14,573 INFO L93 Difference]: Finished difference Result 1226 states and 1613 transitions. [2023-04-01 12:47:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:14,574 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 [2023-04-01 12:47:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:14,576 INFO L225 Difference]: With dead ends: 1226 [2023-04-01 12:47:14,577 INFO L226 Difference]: Without dead ends: 647 [2023-04-01 12:47:14,578 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 [2023-04-01 12:47:14,578 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 2414 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:14,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2414 Valid, 479 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:47:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-04-01 12:47:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2023-04-01 12:47:14,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 622 states have (on average 1.3440514469453375) internal successors, (836), 643 states have internal predecessors, (836), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 839 transitions. [2023-04-01 12:47:14,600 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 839 transitions. Word has length 92 [2023-04-01 12:47:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:14,601 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 839 transitions. [2023-04-01 12:47:14,601 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) [2023-04-01 12:47:14,601 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 839 transitions. [2023-04-01 12:47:14,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-01 12:47:14,602 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:14,602 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] [2023-04-01 12:47:14,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:47:14,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:14,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:14,603 INFO L85 PathProgramCache]: Analyzing trace with hash -480716156, now seen corresponding path program 1 times [2023-04-01 12:47:14,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:14,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772731801] [2023-04-01 12:47:14,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:14,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:14,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:14,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:14,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772731801] [2023-04-01 12:47:14,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772731801] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:14,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:14,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:14,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611230906] [2023-04-01 12:47:14,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:14,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:14,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:14,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:14,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:14,731 INFO L87 Difference]: Start difference. First operand 647 states and 839 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) [2023-04-01 12:47:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:15,094 INFO L93 Difference]: Finished difference Result 1188 states and 1569 transitions. [2023-04-01 12:47:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:15,094 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 [2023-04-01 12:47:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:15,096 INFO L225 Difference]: With dead ends: 1188 [2023-04-01 12:47:15,096 INFO L226 Difference]: Without dead ends: 631 [2023-04-01 12:47:15,097 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 [2023-04-01 12:47:15,098 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 2338 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:15,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2338 Valid, 451 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:47:15,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-04-01 12:47:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2023-04-01 12:47:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 606 states have (on average 1.3481848184818481) internal successors, (817), 627 states have internal predecessors, (817), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 820 transitions. [2023-04-01 12:47:15,180 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 820 transitions. Word has length 93 [2023-04-01 12:47:15,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:15,180 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 820 transitions. [2023-04-01 12:47:15,181 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) [2023-04-01 12:47:15,181 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 820 transitions. [2023-04-01 12:47:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 12:47:15,182 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:15,182 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] [2023-04-01 12:47:15,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:47:15,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:15,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:15,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1900261577, now seen corresponding path program 1 times [2023-04-01 12:47:15,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:15,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921040697] [2023-04-01 12:47:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:15,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:15,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:15,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921040697] [2023-04-01 12:47:15,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921040697] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:15,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:15,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:15,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801057379] [2023-04-01 12:47:15,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:15,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:15,322 INFO L87 Difference]: Start difference. First operand 631 states and 820 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 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) [2023-04-01 12:47:15,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:15,664 INFO L93 Difference]: Finished difference Result 1172 states and 1549 transitions. [2023-04-01 12:47:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:15,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 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 [2023-04-01 12:47:15,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:15,667 INFO L225 Difference]: With dead ends: 1172 [2023-04-01 12:47:15,667 INFO L226 Difference]: Without dead ends: 611 [2023-04-01 12:47:15,668 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 [2023-04-01 12:47:15,669 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 2330 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:15,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 454 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:47:15,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-04-01 12:47:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2023-04-01 12:47:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3566552901023892) internal successors, (795), 607 states have internal predecessors, (795), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 798 transitions. [2023-04-01 12:47:15,703 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 798 transitions. Word has length 94 [2023-04-01 12:47:15,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:15,703 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 798 transitions. [2023-04-01 12:47:15,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 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) [2023-04-01 12:47:15,703 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 798 transitions. [2023-04-01 12:47:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-01 12:47:15,704 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:15,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:15,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:47:15,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:15,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1084456284, now seen corresponding path program 1 times [2023-04-01 12:47:15,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:15,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940312679] [2023-04-01 12:47:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:16,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940312679] [2023-04-01 12:47:16,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940312679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:16,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:16,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 12:47:16,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773829447] [2023-04-01 12:47:16,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:16,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 12:47:16,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:16,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 12:47:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:47:16,109 INFO L87 Difference]: Start difference. First operand 611 states and 798 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:16,833 INFO L93 Difference]: Finished difference Result 1128 states and 1420 transitions. [2023-04-01 12:47:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 12:47:16,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (2), 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 95 [2023-04-01 12:47:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:16,836 INFO L225 Difference]: With dead ends: 1128 [2023-04-01 12:47:16,836 INFO L226 Difference]: Without dead ends: 806 [2023-04-01 12:47:16,837 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 [2023-04-01 12:47:16,838 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 4426 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4426 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:16,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4426 Valid, 978 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 12:47:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-04-01 12:47:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 611. [2023-04-01 12:47:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3549488054607508) internal successors, (794), 607 states have internal predecessors, (794), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 797 transitions. [2023-04-01 12:47:16,877 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 797 transitions. Word has length 95 [2023-04-01 12:47:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:16,877 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 797 transitions. [2023-04-01 12:47:16,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 797 transitions. [2023-04-01 12:47:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-01 12:47:16,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:16,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:16,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:47:16,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:16,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:16,881 INFO L85 PathProgramCache]: Analyzing trace with hash 777317460, now seen corresponding path program 1 times [2023-04-01 12:47:16,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:16,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380787084] [2023-04-01 12:47:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:16,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:17,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:17,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380787084] [2023-04-01 12:47:17,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380787084] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:17,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:17,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:47:17,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005182534] [2023-04-01 12:47:17,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:17,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:47:17,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:47:17,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:47:17,392 INFO L87 Difference]: Start difference. First operand 611 states and 797 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:18,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:18,748 INFO L93 Difference]: Finished difference Result 1143 states and 1486 transitions. [2023-04-01 12:47:18,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 12:47:18,749 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (2), 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 95 [2023-04-01 12:47:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:18,752 INFO L225 Difference]: With dead ends: 1143 [2023-04-01 12:47:18,752 INFO L226 Difference]: Without dead ends: 1068 [2023-04-01 12:47:18,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-01 12:47:18,753 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2354 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:18,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2354 Valid, 2767 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:47:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2023-04-01 12:47:18,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 618. [2023-04-01 12:47:18,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 593 states have (on average 1.3558178752107926) internal successors, (804), 614 states have internal predecessors, (804), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 807 transitions. [2023-04-01 12:47:18,800 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 807 transitions. Word has length 95 [2023-04-01 12:47:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:18,800 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 807 transitions. [2023-04-01 12:47:18,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 807 transitions. [2023-04-01 12:47:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-01 12:47:18,801 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:18,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:18,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:47:18,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:18,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:18,802 INFO L85 PathProgramCache]: Analyzing trace with hash 266937147, now seen corresponding path program 1 times [2023-04-01 12:47:18,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:18,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061252179] [2023-04-01 12:47:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:18,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:19,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:19,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061252179] [2023-04-01 12:47:19,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061252179] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:19,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:19,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:19,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10121792] [2023-04-01 12:47:19,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:19,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:19,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:19,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:19,078 INFO L87 Difference]: Start difference. First operand 618 states and 807 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:20,330 INFO L93 Difference]: Finished difference Result 1202 states and 1572 transitions. [2023-04-01 12:47:20,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:20,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (2), 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 95 [2023-04-01 12:47:20,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:20,333 INFO L225 Difference]: With dead ends: 1202 [2023-04-01 12:47:20,333 INFO L226 Difference]: Without dead ends: 1038 [2023-04-01 12:47:20,334 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 [2023-04-01 12:47:20,334 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 2082 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:20,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 2763 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:47:20,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-04-01 12:47:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 611. [2023-04-01 12:47:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3532423208191127) internal successors, (793), 607 states have internal predecessors, (793), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 796 transitions. [2023-04-01 12:47:20,384 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 796 transitions. Word has length 95 [2023-04-01 12:47:20,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:20,384 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 796 transitions. [2023-04-01 12:47:20,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 796 transitions. [2023-04-01 12:47:20,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-01 12:47:20,386 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:20,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 12:47:20,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:20,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1851134652, now seen corresponding path program 1 times [2023-04-01 12:47:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:20,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149250618] [2023-04-01 12:47:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:20,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:20,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149250618] [2023-04-01 12:47:20,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149250618] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:20,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:20,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:20,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083648551] [2023-04-01 12:47:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:20,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:20,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:20,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:20,693 INFO L87 Difference]: Start difference. First operand 611 states and 796 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:21,819 INFO L93 Difference]: Finished difference Result 1101 states and 1429 transitions. [2023-04-01 12:47:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:21,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (2), 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 95 [2023-04-01 12:47:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:21,822 INFO L225 Difference]: With dead ends: 1101 [2023-04-01 12:47:21,822 INFO L226 Difference]: Without dead ends: 1026 [2023-04-01 12:47:21,825 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 [2023-04-01 12:47:21,826 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 3437 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3437 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:21,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3437 Valid, 2052 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:47:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-04-01 12:47:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 611. [2023-04-01 12:47:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3515358361774743) internal successors, (792), 607 states have internal predecessors, (792), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 795 transitions. [2023-04-01 12:47:21,890 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 795 transitions. Word has length 95 [2023-04-01 12:47:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:21,890 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 795 transitions. [2023-04-01 12:47:21,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 795 transitions. [2023-04-01 12:47:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 12:47:21,892 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:21,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:21,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 12:47:21,892 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:21,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:21,893 INFO L85 PathProgramCache]: Analyzing trace with hash 56748265, now seen corresponding path program 1 times [2023-04-01 12:47:21,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:21,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762028737] [2023-04-01 12:47:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:21,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:22,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:22,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762028737] [2023-04-01 12:47:22,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762028737] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:22,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:22,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862808978] [2023-04-01 12:47:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:22,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:22,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:22,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:22,280 INFO L87 Difference]: Start difference. First operand 611 states and 795 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:23,373 INFO L93 Difference]: Finished difference Result 1143 states and 1486 transitions. [2023-04-01 12:47:23,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:23,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 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 97 [2023-04-01 12:47:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:23,392 INFO L225 Difference]: With dead ends: 1143 [2023-04-01 12:47:23,392 INFO L226 Difference]: Without dead ends: 1029 [2023-04-01 12:47:23,393 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 [2023-04-01 12:47:23,393 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 4112 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2026 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:23,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 2412 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2026 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:23,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-04-01 12:47:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 611. [2023-04-01 12:47:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3498293515358362) internal successors, (791), 607 states have internal predecessors, (791), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 794 transitions. [2023-04-01 12:47:23,454 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 794 transitions. Word has length 97 [2023-04-01 12:47:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:23,454 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 794 transitions. [2023-04-01 12:47:23,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 794 transitions. [2023-04-01 12:47:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 12:47:23,455 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:23,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:23,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 12:47:23,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:23,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:23,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1339956121, now seen corresponding path program 1 times [2023-04-01 12:47:23,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:23,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131060394] [2023-04-01 12:47:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:23,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:23,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131060394] [2023-04-01 12:47:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131060394] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:23,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:23,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937757268] [2023-04-01 12:47:23,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:23,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:23,737 INFO L87 Difference]: Start difference. First operand 611 states and 794 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:24,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:24,838 INFO L93 Difference]: Finished difference Result 1101 states and 1426 transitions. [2023-04-01 12:47:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:24,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 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 97 [2023-04-01 12:47:24,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:24,841 INFO L225 Difference]: With dead ends: 1101 [2023-04-01 12:47:24,841 INFO L226 Difference]: Without dead ends: 1026 [2023-04-01 12:47:24,842 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 [2023-04-01 12:47:24,843 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 3173 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3173 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:24,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3173 Valid, 2249 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-04-01 12:47:24,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 611. [2023-04-01 12:47:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.348122866894198) internal successors, (790), 607 states have internal predecessors, (790), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 793 transitions. [2023-04-01 12:47:24,919 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 793 transitions. Word has length 97 [2023-04-01 12:47:24,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:24,919 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 793 transitions. [2023-04-01 12:47:24,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 793 transitions. [2023-04-01 12:47:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 12:47:24,920 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:24,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:24,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 12:47:24,921 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:24,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1735135369, now seen corresponding path program 1 times [2023-04-01 12:47:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:24,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548415243] [2023-04-01 12:47:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:25,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548415243] [2023-04-01 12:47:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548415243] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:25,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:25,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:25,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562916332] [2023-04-01 12:47:25,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:25,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:25,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:25,235 INFO L87 Difference]: Start difference. First operand 611 states and 793 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:26,392 INFO L93 Difference]: Finished difference Result 1236 states and 1601 transitions. [2023-04-01 12:47:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:26,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 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 97 [2023-04-01 12:47:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:26,396 INFO L225 Difference]: With dead ends: 1236 [2023-04-01 12:47:26,396 INFO L226 Difference]: Without dead ends: 1038 [2023-04-01 12:47:26,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:47:26,399 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 3700 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3700 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:26,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3700 Valid, 2606 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:47:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-04-01 12:47:26,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 611. [2023-04-01 12:47:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3464163822525597) internal successors, (789), 607 states have internal predecessors, (789), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 792 transitions. [2023-04-01 12:47:26,474 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 792 transitions. Word has length 97 [2023-04-01 12:47:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:26,474 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 792 transitions. [2023-04-01 12:47:26,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 792 transitions. [2023-04-01 12:47:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 12:47:26,476 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:26,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 12:47:26,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:26,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1459096164, now seen corresponding path program 1 times [2023-04-01 12:47:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:26,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514811055] [2023-04-01 12:47:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:26,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514811055] [2023-04-01 12:47:26,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514811055] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:26,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:26,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75004534] [2023-04-01 12:47:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:26,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:26,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:26,768 INFO L87 Difference]: Start difference. First operand 611 states and 792 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:27,834 INFO L93 Difference]: Finished difference Result 1101 states and 1425 transitions. [2023-04-01 12:47:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:27,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 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 97 [2023-04-01 12:47:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:27,837 INFO L225 Difference]: With dead ends: 1101 [2023-04-01 12:47:27,838 INFO L226 Difference]: Without dead ends: 1026 [2023-04-01 12:47:27,838 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 [2023-04-01 12:47:27,838 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 3120 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3120 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:27,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3120 Valid, 2250 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-04-01 12:47:27,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 611. [2023-04-01 12:47:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3447098976109215) internal successors, (788), 607 states have internal predecessors, (788), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 791 transitions. [2023-04-01 12:47:27,906 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 791 transitions. Word has length 97 [2023-04-01 12:47:27,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:27,906 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 791 transitions. [2023-04-01 12:47:27,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:27,907 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 791 transitions. [2023-04-01 12:47:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 12:47:27,908 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:27,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:27,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 12:47:27,908 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:27,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:27,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1969476477, now seen corresponding path program 1 times [2023-04-01 12:47:27,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:27,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191592518] [2023-04-01 12:47:27,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:27,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:28,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:28,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191592518] [2023-04-01 12:47:28,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191592518] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:28,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:28,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:28,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636720630] [2023-04-01 12:47:28,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:28,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:28,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:28,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:28,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:28,186 INFO L87 Difference]: Start difference. First operand 611 states and 791 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:29,385 INFO L93 Difference]: Finished difference Result 1143 states and 1484 transitions. [2023-04-01 12:47:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:29,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 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 97 [2023-04-01 12:47:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:29,390 INFO L225 Difference]: With dead ends: 1143 [2023-04-01 12:47:29,390 INFO L226 Difference]: Without dead ends: 1029 [2023-04-01 12:47:29,390 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 [2023-04-01 12:47:29,391 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 2698 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:29,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2698 Valid, 2815 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:47:29,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-04-01 12:47:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 611. [2023-04-01 12:47:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3430034129692834) internal successors, (787), 607 states have internal predecessors, (787), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 790 transitions. [2023-04-01 12:47:29,460 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 790 transitions. Word has length 97 [2023-04-01 12:47:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:29,461 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 790 transitions. [2023-04-01 12:47:29,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 790 transitions. [2023-04-01 12:47:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 12:47:29,462 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:29,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:29,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 12:47:29,462 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:29,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash -500361006, now seen corresponding path program 1 times [2023-04-01 12:47:29,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:29,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424220674] [2023-04-01 12:47:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:29,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:29,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424220674] [2023-04-01 12:47:29,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424220674] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:29,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:29,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796811796] [2023-04-01 12:47:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:29,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:29,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:29,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:29,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:29,789 INFO L87 Difference]: Start difference. First operand 611 states and 790 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:30,864 INFO L93 Difference]: Finished difference Result 1096 states and 1418 transitions. [2023-04-01 12:47:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:30,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 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 97 [2023-04-01 12:47:30,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:30,867 INFO L225 Difference]: With dead ends: 1096 [2023-04-01 12:47:30,867 INFO L226 Difference]: Without dead ends: 1026 [2023-04-01 12:47:30,868 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 [2023-04-01 12:47:30,868 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 2019 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:30,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 2425 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:30,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-04-01 12:47:30,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 611. [2023-04-01 12:47:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.341296928327645) internal successors, (786), 607 states have internal predecessors, (786), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 789 transitions. [2023-04-01 12:47:30,945 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 789 transitions. Word has length 97 [2023-04-01 12:47:30,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:30,945 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 789 transitions. [2023-04-01 12:47:30,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:30,946 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 789 transitions. [2023-04-01 12:47:30,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 12:47:30,947 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:30,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:30,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 12:47:30,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:30,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1434911095, now seen corresponding path program 1 times [2023-04-01 12:47:30,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:30,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278392656] [2023-04-01 12:47:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:30,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:31,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:31,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:31,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278392656] [2023-04-01 12:47:31,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278392656] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:31,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:31,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:31,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339414920] [2023-04-01 12:47:31,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:31,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:31,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:31,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:31,252 INFO L87 Difference]: Start difference. First operand 611 states and 789 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:32,429 INFO L93 Difference]: Finished difference Result 1129 states and 1466 transitions. [2023-04-01 12:47:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:32,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 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 97 [2023-04-01 12:47:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:32,432 INFO L225 Difference]: With dead ends: 1129 [2023-04-01 12:47:32,432 INFO L226 Difference]: Without dead ends: 1029 [2023-04-01 12:47:32,433 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 [2023-04-01 12:47:32,433 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 3476 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:32,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3476 Valid, 2887 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-04-01 12:47:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 611. [2023-04-01 12:47:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3395904436860069) internal successors, (785), 607 states have internal predecessors, (785), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 788 transitions. [2023-04-01 12:47:32,522 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 788 transitions. Word has length 97 [2023-04-01 12:47:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:32,522 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 788 transitions. [2023-04-01 12:47:32,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 788 transitions. [2023-04-01 12:47:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:32,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:32,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:32,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 12:47:32,524 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:32,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:32,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1947384818, now seen corresponding path program 1 times [2023-04-01 12:47:32,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:32,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691534104] [2023-04-01 12:47:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:32,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:32,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:32,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691534104] [2023-04-01 12:47:32,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691534104] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:32,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:32,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:32,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793642952] [2023-04-01 12:47:32,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:32,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:32,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:32,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:32,815 INFO L87 Difference]: Start difference. First operand 611 states and 788 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:33,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:33,969 INFO L93 Difference]: Finished difference Result 1072 states and 1375 transitions. [2023-04-01 12:47:33,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:33,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:33,972 INFO L225 Difference]: With dead ends: 1072 [2023-04-01 12:47:33,972 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:33,973 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 [2023-04-01 12:47:33,973 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 4035 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4035 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:33,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4035 Valid, 2279 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:34,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3378839590443685) internal successors, (784), 607 states have internal predecessors, (784), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 787 transitions. [2023-04-01 12:47:34,054 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 787 transitions. Word has length 99 [2023-04-01 12:47:34,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:34,054 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 787 transitions. [2023-04-01 12:47:34,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:34,055 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 787 transitions. [2023-04-01 12:47:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:34,056 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:34,056 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] [2023-04-01 12:47:34,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-01 12:47:34,056 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:34,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1817934073, now seen corresponding path program 1 times [2023-04-01 12:47:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:34,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418575891] [2023-04-01 12:47:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:34,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:34,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:34,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418575891] [2023-04-01 12:47:34,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418575891] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:34,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:34,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:34,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454453534] [2023-04-01 12:47:34,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:34,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:34,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:34,317 INFO L87 Difference]: Start difference. First operand 611 states and 787 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:35,404 INFO L93 Difference]: Finished difference Result 1110 states and 1428 transitions. [2023-04-01 12:47:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:35,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:35,406 INFO L225 Difference]: With dead ends: 1110 [2023-04-01 12:47:35,407 INFO L226 Difference]: Without dead ends: 1026 [2023-04-01 12:47:35,407 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 [2023-04-01 12:47:35,407 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 1946 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:35,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 2576 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-04-01 12:47:35,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 611. [2023-04-01 12:47:35,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3361774744027304) internal successors, (783), 607 states have internal predecessors, (783), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 786 transitions. [2023-04-01 12:47:35,492 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 786 transitions. Word has length 99 [2023-04-01 12:47:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:35,492 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 786 transitions. [2023-04-01 12:47:35,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:35,492 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 786 transitions. [2023-04-01 12:47:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:35,493 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:35,493 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] [2023-04-01 12:47:35,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-01 12:47:35,494 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:35,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:35,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1219402374, now seen corresponding path program 1 times [2023-04-01 12:47:35,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:35,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132770129] [2023-04-01 12:47:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:35,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:35,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:35,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132770129] [2023-04-01 12:47:35,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132770129] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:35,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:35,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:35,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595759289] [2023-04-01 12:47:35,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:35,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:35,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:35,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:35,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:35,755 INFO L87 Difference]: Start difference. First operand 611 states and 786 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:36,839 INFO L93 Difference]: Finished difference Result 1116 states and 1432 transitions. [2023-04-01 12:47:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:36,842 INFO L225 Difference]: With dead ends: 1116 [2023-04-01 12:47:36,842 INFO L226 Difference]: Without dead ends: 1026 [2023-04-01 12:47:36,842 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 [2023-04-01 12:47:36,844 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 2143 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:36,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 2488 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:47:36,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-04-01 12:47:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 611. [2023-04-01 12:47:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3344709897610922) internal successors, (782), 607 states have internal predecessors, (782), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 785 transitions. [2023-04-01 12:47:36,937 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 785 transitions. Word has length 99 [2023-04-01 12:47:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:36,938 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 785 transitions. [2023-04-01 12:47:36,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 785 transitions. [2023-04-01 12:47:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:36,939 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:36,939 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] [2023-04-01 12:47:36,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-01 12:47:36,939 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:36,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1068770368, now seen corresponding path program 1 times [2023-04-01 12:47:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:36,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299446672] [2023-04-01 12:47:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:36,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:37,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:37,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299446672] [2023-04-01 12:47:37,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299446672] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:37,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:37,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634567207] [2023-04-01 12:47:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:37,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:37,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:37,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:37,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:37,237 INFO L87 Difference]: Start difference. First operand 611 states and 785 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:38,505 INFO L93 Difference]: Finished difference Result 1158 states and 1486 transitions. [2023-04-01 12:47:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:38,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:38,508 INFO L225 Difference]: With dead ends: 1158 [2023-04-01 12:47:38,508 INFO L226 Difference]: Without dead ends: 1029 [2023-04-01 12:47:38,509 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 [2023-04-01 12:47:38,509 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 2683 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:38,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 2772 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:47:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-04-01 12:47:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 611. [2023-04-01 12:47:38,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3327645051194539) internal successors, (781), 607 states have internal predecessors, (781), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 784 transitions. [2023-04-01 12:47:38,614 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 784 transitions. Word has length 99 [2023-04-01 12:47:38,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:38,614 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 784 transitions. [2023-04-01 12:47:38,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 784 transitions. [2023-04-01 12:47:38,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:38,615 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:38,615 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] [2023-04-01 12:47:38,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-01 12:47:38,616 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:38,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash 182013946, now seen corresponding path program 1 times [2023-04-01 12:47:38,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:38,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074455156] [2023-04-01 12:47:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:38,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074455156] [2023-04-01 12:47:38,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074455156] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:38,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:38,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:38,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469737299] [2023-04-01 12:47:38,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:38,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:38,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:38,879 INFO L87 Difference]: Start difference. First operand 611 states and 784 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:39,968 INFO L93 Difference]: Finished difference Result 1068 states and 1367 transitions. [2023-04-01 12:47:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:39,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:39,971 INFO L225 Difference]: With dead ends: 1068 [2023-04-01 12:47:39,971 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:39,971 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 [2023-04-01 12:47:39,972 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 3425 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3425 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:39,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3425 Valid, 2512 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2056 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:47:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3310580204778157) internal successors, (780), 607 states have internal predecessors, (780), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 783 transitions. [2023-04-01 12:47:40,061 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 783 transitions. Word has length 99 [2023-04-01 12:47:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:40,062 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 783 transitions. [2023-04-01 12:47:40,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 783 transitions. [2023-04-01 12:47:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:40,063 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:40,063 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] [2023-04-01 12:47:40,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-01 12:47:40,063 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:40,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:40,064 INFO L85 PathProgramCache]: Analyzing trace with hash -377646918, now seen corresponding path program 1 times [2023-04-01 12:47:40,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:40,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623584651] [2023-04-01 12:47:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:40,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:40,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:40,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623584651] [2023-04-01 12:47:40,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623584651] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:40,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:40,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549574240] [2023-04-01 12:47:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:40,316 INFO L87 Difference]: Start difference. First operand 611 states and 783 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:41,517 INFO L93 Difference]: Finished difference Result 1072 states and 1369 transitions. [2023-04-01 12:47:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:41,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:41,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:41,520 INFO L225 Difference]: With dead ends: 1072 [2023-04-01 12:47:41,520 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:41,521 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 [2023-04-01 12:47:41,521 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 2661 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:41,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 2809 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:41,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3293515358361774) internal successors, (779), 607 states have internal predecessors, (779), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 782 transitions. [2023-04-01 12:47:41,619 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 782 transitions. Word has length 99 [2023-04-01 12:47:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:41,619 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 782 transitions. [2023-04-01 12:47:41,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 782 transitions. [2023-04-01 12:47:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:41,620 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:41,620 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] [2023-04-01 12:47:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-01 12:47:41,620 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:41,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:41,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1131350764, now seen corresponding path program 1 times [2023-04-01 12:47:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742843263] [2023-04-01 12:47:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:41,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:41,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:41,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742843263] [2023-04-01 12:47:41,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742843263] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:41,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699848848] [2023-04-01 12:47:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:41,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:41,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:41,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:41,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:41,929 INFO L87 Difference]: Start difference. First operand 611 states and 782 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:43,316 INFO L93 Difference]: Finished difference Result 1072 states and 1367 transitions. [2023-04-01 12:47:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:43,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:43,319 INFO L225 Difference]: With dead ends: 1072 [2023-04-01 12:47:43,319 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:43,320 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 [2023-04-01 12:47:43,320 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 3737 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3737 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:43,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3737 Valid, 2509 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:47:43,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3276450511945392) internal successors, (778), 607 states have internal predecessors, (778), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 781 transitions. [2023-04-01 12:47:43,423 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 781 transitions. Word has length 99 [2023-04-01 12:47:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:43,423 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 781 transitions. [2023-04-01 12:47:43,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 781 transitions. [2023-04-01 12:47:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:43,424 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:43,424 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] [2023-04-01 12:47:43,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-01 12:47:43,425 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:43,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash -218668201, now seen corresponding path program 1 times [2023-04-01 12:47:43,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:43,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653776911] [2023-04-01 12:47:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:43,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:43,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:43,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653776911] [2023-04-01 12:47:43,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653776911] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:43,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:43,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:43,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516131787] [2023-04-01 12:47:43,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:43,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:43,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:43,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:43,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:43,660 INFO L87 Difference]: Start difference. First operand 611 states and 781 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:44,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:44,847 INFO L93 Difference]: Finished difference Result 1110 states and 1418 transitions. [2023-04-01 12:47:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:44,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:44,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:44,849 INFO L225 Difference]: With dead ends: 1110 [2023-04-01 12:47:44,850 INFO L226 Difference]: Without dead ends: 1026 [2023-04-01 12:47:44,850 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 [2023-04-01 12:47:44,850 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 3282 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:44,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3282 Valid, 2877 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:44,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-04-01 12:47:44,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 611. [2023-04-01 12:47:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.325938566552901) internal successors, (777), 607 states have internal predecessors, (777), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 780 transitions. [2023-04-01 12:47:44,955 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 780 transitions. Word has length 99 [2023-04-01 12:47:44,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:44,955 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 780 transitions. [2023-04-01 12:47:44,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 780 transitions. [2023-04-01 12:47:44,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:44,957 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:44,957 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] [2023-04-01 12:47:44,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-01 12:47:44,957 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:44,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:44,957 INFO L85 PathProgramCache]: Analyzing trace with hash -187314142, now seen corresponding path program 1 times [2023-04-01 12:47:44,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:44,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539694888] [2023-04-01 12:47:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:44,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:45,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539694888] [2023-04-01 12:47:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539694888] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:45,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:45,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650422770] [2023-04-01 12:47:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:45,230 INFO L87 Difference]: Start difference. First operand 611 states and 780 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:46,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:46,424 INFO L93 Difference]: Finished difference Result 1072 states and 1366 transitions. [2023-04-01 12:47:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:46,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:46,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:46,427 INFO L225 Difference]: With dead ends: 1072 [2023-04-01 12:47:46,427 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:46,428 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 [2023-04-01 12:47:46,428 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 3609 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3609 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:46,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3609 Valid, 2603 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3242320819112627) internal successors, (776), 607 states have internal predecessors, (776), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 779 transitions. [2023-04-01 12:47:46,529 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 779 transitions. Word has length 99 [2023-04-01 12:47:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:46,530 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 779 transitions. [2023-04-01 12:47:46,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 779 transitions. [2023-04-01 12:47:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:46,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:46,531 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, 1] [2023-04-01 12:47:46,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-01 12:47:46,531 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:46,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:46,531 INFO L85 PathProgramCache]: Analyzing trace with hash -316764887, now seen corresponding path program 1 times [2023-04-01 12:47:46,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:46,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19198779] [2023-04-01 12:47:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:46,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:46,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19198779] [2023-04-01 12:47:46,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19198779] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:46,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:46,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:46,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095542329] [2023-04-01 12:47:46,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:46,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:46,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:46,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:46,744 INFO L87 Difference]: Start difference. First operand 611 states and 779 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:47,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:47,906 INFO L93 Difference]: Finished difference Result 1110 states and 1416 transitions. [2023-04-01 12:47:47,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:47,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:47,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:47,909 INFO L225 Difference]: With dead ends: 1110 [2023-04-01 12:47:47,909 INFO L226 Difference]: Without dead ends: 1026 [2023-04-01 12:47:47,910 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 [2023-04-01 12:47:47,910 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1792 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:47,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 2830 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-04-01 12:47:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 611. [2023-04-01 12:47:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3225255972696246) internal successors, (775), 607 states have internal predecessors, (775), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 778 transitions. [2023-04-01 12:47:48,020 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 778 transitions. Word has length 99 [2023-04-01 12:47:48,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:48,021 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 778 transitions. [2023-04-01 12:47:48,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:48,022 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 778 transitions. [2023-04-01 12:47:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:48,023 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:48,023 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] [2023-04-01 12:47:48,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-01 12:47:48,023 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:48,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:48,024 INFO L85 PathProgramCache]: Analyzing trace with hash 242591789, now seen corresponding path program 1 times [2023-04-01 12:47:48,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:48,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710706212] [2023-04-01 12:47:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:48,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:48,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:48,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710706212] [2023-04-01 12:47:48,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710706212] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:48,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:48,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978705051] [2023-04-01 12:47:48,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:48,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:48,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:48,277 INFO L87 Difference]: Start difference. First operand 611 states and 778 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:49,494 INFO L93 Difference]: Finished difference Result 1068 states and 1360 transitions. [2023-04-01 12:47:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:49,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:49,497 INFO L225 Difference]: With dead ends: 1068 [2023-04-01 12:47:49,497 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:49,498 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 [2023-04-01 12:47:49,498 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 3358 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:49,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3358 Valid, 2770 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:49,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3208191126279865) internal successors, (774), 607 states have internal predecessors, (774), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 777 transitions. [2023-04-01 12:47:49,605 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 777 transitions. Word has length 99 [2023-04-01 12:47:49,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:49,606 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 777 transitions. [2023-04-01 12:47:49,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 777 transitions. [2023-04-01 12:47:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:49,607 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:49,607 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] [2023-04-01 12:47:49,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-01 12:47:49,607 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:49,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1855917522, now seen corresponding path program 1 times [2023-04-01 12:47:49,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:49,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134898455] [2023-04-01 12:47:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:49,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:49,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134898455] [2023-04-01 12:47:49,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134898455] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:49,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:49,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:49,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669690597] [2023-04-01 12:47:49,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:49,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:49,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:49,860 INFO L87 Difference]: Start difference. First operand 611 states and 777 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:51,104 INFO L93 Difference]: Finished difference Result 1072 states and 1363 transitions. [2023-04-01 12:47:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:51,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:51,107 INFO L225 Difference]: With dead ends: 1072 [2023-04-01 12:47:51,107 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:51,107 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 [2023-04-01 12:47:51,108 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 2559 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:51,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 3005 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:47:51,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.319112627986348) internal successors, (773), 607 states have internal predecessors, (773), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 776 transitions. [2023-04-01 12:47:51,225 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 776 transitions. Word has length 99 [2023-04-01 12:47:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:51,225 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 776 transitions. [2023-04-01 12:47:51,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:51,225 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 776 transitions. [2023-04-01 12:47:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:51,226 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:51,226 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] [2023-04-01 12:47:51,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-01 12:47:51,226 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:51,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash -724771950, now seen corresponding path program 1 times [2023-04-01 12:47:51,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:51,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441315209] [2023-04-01 12:47:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:51,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:51,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:51,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441315209] [2023-04-01 12:47:51,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441315209] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:51,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:51,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:51,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148416682] [2023-04-01 12:47:51,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:51,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:51,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:51,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:51,490 INFO L87 Difference]: Start difference. First operand 611 states and 776 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:52,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:52,779 INFO L93 Difference]: Finished difference Result 1067 states and 1356 transitions. [2023-04-01 12:47:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:52,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:52,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:52,781 INFO L225 Difference]: With dead ends: 1067 [2023-04-01 12:47:52,781 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:52,782 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 [2023-04-01 12:47:52,782 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 3378 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3378 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:52,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3378 Valid, 2759 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:52,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.31740614334471) internal successors, (772), 607 states have internal predecessors, (772), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 775 transitions. [2023-04-01 12:47:52,912 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 775 transitions. Word has length 99 [2023-04-01 12:47:52,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:52,912 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 775 transitions. [2023-04-01 12:47:52,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 775 transitions. [2023-04-01 12:47:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:52,914 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:52,914 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] [2023-04-01 12:47:52,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-01 12:47:52,914 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:52,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:52,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1601954636, now seen corresponding path program 1 times [2023-04-01 12:47:52,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:52,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021336399] [2023-04-01 12:47:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:52,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:53,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021336399] [2023-04-01 12:47:53,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021336399] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:53,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:53,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730250003] [2023-04-01 12:47:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:53,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:53,166 INFO L87 Difference]: Start difference. First operand 611 states and 775 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:54,391 INFO L93 Difference]: Finished difference Result 1068 states and 1356 transitions. [2023-04-01 12:47:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:54,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:54,393 INFO L225 Difference]: With dead ends: 1068 [2023-04-01 12:47:54,393 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:54,394 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 [2023-04-01 12:47:54,402 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 2607 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:54,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2607 Valid, 2753 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:54,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3156996587030716) internal successors, (771), 607 states have internal predecessors, (771), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 774 transitions. [2023-04-01 12:47:54,530 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 774 transitions. Word has length 99 [2023-04-01 12:47:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:54,530 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 774 transitions. [2023-04-01 12:47:54,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 774 transitions. [2023-04-01 12:47:54,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:54,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:54,531 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, 1] [2023-04-01 12:47:54,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-01 12:47:54,532 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:54,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:54,532 INFO L85 PathProgramCache]: Analyzing trace with hash -670744592, now seen corresponding path program 1 times [2023-04-01 12:47:54,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:54,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905744937] [2023-04-01 12:47:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:54,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:54,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905744937] [2023-04-01 12:47:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905744937] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:54,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:54,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951571396] [2023-04-01 12:47:54,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:54,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:54,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:54,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:54,785 INFO L87 Difference]: Start difference. First operand 611 states and 774 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:56,018 INFO L93 Difference]: Finished difference Result 1068 states and 1354 transitions. [2023-04-01 12:47:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:56,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:56,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:56,020 INFO L225 Difference]: With dead ends: 1068 [2023-04-01 12:47:56,020 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:56,020 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 [2023-04-01 12:47:56,021 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 3453 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:56,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3453 Valid, 2711 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3139931740614335) internal successors, (770), 607 states have internal predecessors, (770), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 773 transitions. [2023-04-01 12:47:56,138 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 773 transitions. Word has length 99 [2023-04-01 12:47:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:56,139 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 773 transitions. [2023-04-01 12:47:56,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 773 transitions. [2023-04-01 12:47:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:47:56,140 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:56,140 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] [2023-04-01 12:47:56,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-01 12:47:56,140 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:56,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1229756034, now seen corresponding path program 1 times [2023-04-01 12:47:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:56,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274424387] [2023-04-01 12:47:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:56,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:56,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:56,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274424387] [2023-04-01 12:47:56,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274424387] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:56,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:56,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:56,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560551205] [2023-04-01 12:47:56,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:56,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:56,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:56,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:56,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:56,366 INFO L87 Difference]: Start difference. First operand 611 states and 773 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:57,602 INFO L93 Difference]: Finished difference Result 1072 states and 1356 transitions. [2023-04-01 12:47:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:57,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 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 99 [2023-04-01 12:47:57,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:57,604 INFO L225 Difference]: With dead ends: 1072 [2023-04-01 12:47:57,604 INFO L226 Difference]: Without dead ends: 1010 [2023-04-01 12:47:57,605 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 [2023-04-01 12:47:57,605 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 2586 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2586 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:57,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2586 Valid, 2758 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:47:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-01 12:47:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2023-04-01 12:47:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 586 states have (on average 1.3122866894197953) internal successors, (769), 607 states have internal predecessors, (769), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 772 transitions. [2023-04-01 12:47:57,726 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 772 transitions. Word has length 99 [2023-04-01 12:47:57,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:57,726 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 772 transitions. [2023-04-01 12:47:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:57,726 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 772 transitions. [2023-04-01 12:47:57,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-01 12:47:57,727 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:57,727 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] [2023-04-01 12:47:57,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-01 12:47:57,728 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:57,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:57,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1997147604, now seen corresponding path program 1 times [2023-04-01 12:47:57,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:57,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358909548] [2023-04-01 12:47:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:57,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:58,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:58,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358909548] [2023-04-01 12:47:58,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358909548] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:58,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:58,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-01 12:47:58,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279103820] [2023-04-01 12:47:58,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:58,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 12:47:58,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:58,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 12:47:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:47:58,385 INFO L87 Difference]: Start difference. First operand 611 states and 772 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 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) [2023-04-01 12:48:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:00,270 INFO L93 Difference]: Finished difference Result 1808 states and 2172 transitions. [2023-04-01 12:48:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 12:48:00,270 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 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 [2023-04-01 12:48:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:00,272 INFO L225 Difference]: With dead ends: 1808 [2023-04-01 12:48:00,272 INFO L226 Difference]: Without dead ends: 1546 [2023-04-01 12:48:00,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2023-04-01 12:48:00,273 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 6439 mSDsluCounter, 2883 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6439 SdHoareTripleChecker+Valid, 3690 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:00,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6439 Valid, 3690 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:48:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2023-04-01 12:48:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 399. [2023-04-01 12:48:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 380 states have (on average 1.2763157894736843) internal successors, (485), 395 states have internal predecessors, (485), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 488 transitions. [2023-04-01 12:48:00,398 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 488 transitions. Word has length 100 [2023-04-01 12:48:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:00,398 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 488 transitions. [2023-04-01 12:48:00,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 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) [2023-04-01 12:48:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 488 transitions. [2023-04-01 12:48:00,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-01 12:48:00,399 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:00,399 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] [2023-04-01 12:48:00,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-01 12:48:00,399 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:00,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1782409704, now seen corresponding path program 1 times [2023-04-01 12:48:00,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:00,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462003200] [2023-04-01 12:48:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:00,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat