./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72fb41a66cb1f9b8ef6e2c9a867b06ff465ce26afd613e6d36809476f178395e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:44:30,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:44:30,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:44:30,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:44:30,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:44:31,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:44:31,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:44:31,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:44:31,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:44:31,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:44:31,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:44:31,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:44:31,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:44:31,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:44:31,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:44:31,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:44:31,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:44:31,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:44:31,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:44:31,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:44:31,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:44:31,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:44:31,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:44:31,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:44:31,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:44:31,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:44:31,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:44:31,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:44:31,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:44:31,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:44:31,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:44:31,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:44:31,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:44:31,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:44:31,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:44:31,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:44:31,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:44:31,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:44:31,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:44:31,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:44:31,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:44:31,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:44:31,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:44:31,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:44:31,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:44:31,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:44:31,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:44:31,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:44:31,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:44:31,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:44:31,087 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:44:31,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:44:31,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:44:31,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:44:31,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:44:31,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:44:31,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:44:31,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:44:31,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:44:31,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:44:31,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:44:31,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:44:31,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:44:31,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:44:31,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:44:31,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:44:31,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:44:31,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:44:31,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:44:31,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:44:31,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:44:31,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:44:31,093 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:44:31,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:44:31,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:44:31,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:44:31,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72fb41a66cb1f9b8ef6e2c9a867b06ff465ce26afd613e6d36809476f178395e [2021-12-17 16:44:31,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:44:31,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:44:31,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:44:31,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:44:31,350 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:44:31,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-17 16:44:31,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57b8f0af/584ac7846e4c4280b77bfa910bff670a/FLAG22d363819 [2021-12-17 16:44:32,026 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:44:32,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-17 16:44:32,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57b8f0af/584ac7846e4c4280b77bfa910bff670a/FLAG22d363819 [2021-12-17 16:44:32,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57b8f0af/584ac7846e4c4280b77bfa910bff670a [2021-12-17 16:44:32,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:44:32,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:44:32,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:44:32,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:44:32,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:44:32,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:44:32" (1/1) ... [2021-12-17 16:44:32,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594588ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:32, skipping insertion in model container [2021-12-17 16:44:32,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:44:32" (1/1) ... [2021-12-17 16:44:32,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:44:32,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:44:32,739 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13533,13546] [2021-12-17 16:44:32,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18033,18046] [2021-12-17 16:44:32,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19325,19338] [2021-12-17 16:44:32,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20083,20096] [2021-12-17 16:44:32,814 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21703,21716] [2021-12-17 16:44:32,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22461,22474] [2021-12-17 16:44:32,824 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23547,23560] [2021-12-17 16:44:32,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26086,26099] [2021-12-17 16:44:32,839 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26847,26860] [2021-12-17 16:44:32,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27936,27949] [2021-12-17 16:44:32,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29941,29954] [2021-12-17 16:44:32,867 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33864,33877] [2021-12-17 16:44:32,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34625,34638] [2021-12-17 16:44:32,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35718,35731] [2021-12-17 16:44:32,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37727,37740] [2021-12-17 16:44:32,899 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41330,41343] [2021-12-17 16:44:32,923 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48207,48220] [2021-12-17 16:44:32,928 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48968,48981] [2021-12-17 16:44:32,932 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50057,50070] [2021-12-17 16:44:32,939 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52062,52075] [2021-12-17 16:44:32,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55451,55464] [2021-12-17 16:44:32,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61148,61161] [2021-12-17 16:44:33,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:44:33,268 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:44:33,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13533,13546] [2021-12-17 16:44:33,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18033,18046] [2021-12-17 16:44:33,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19325,19338] [2021-12-17 16:44:33,350 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20083,20096] [2021-12-17 16:44:33,355 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21703,21716] [2021-12-17 16:44:33,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22461,22474] [2021-12-17 16:44:33,362 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23547,23560] [2021-12-17 16:44:33,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26086,26099] [2021-12-17 16:44:33,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26847,26860] [2021-12-17 16:44:33,378 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27936,27949] [2021-12-17 16:44:33,384 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29941,29954] [2021-12-17 16:44:33,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33864,33877] [2021-12-17 16:44:33,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34625,34638] [2021-12-17 16:44:33,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35718,35731] [2021-12-17 16:44:33,407 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37727,37740] [2021-12-17 16:44:33,417 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41330,41343] [2021-12-17 16:44:33,437 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48207,48220] [2021-12-17 16:44:33,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48968,48981] [2021-12-17 16:44:33,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50057,50070] [2021-12-17 16:44:33,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52062,52075] [2021-12-17 16:44:33,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55451,55464] [2021-12-17 16:44:33,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61148,61161] [2021-12-17 16:44:33,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:44:33,679 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:44:33,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33 WrapperNode [2021-12-17 16:44:33,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:44:33,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:44:33,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:44:33,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:44:33,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,819 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6324 [2021-12-17 16:44:33,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:44:33,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:44:33,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:44:33,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:44:33,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:44:33,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:44:33,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:44:33,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:44:33,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (1/1) ... [2021-12-17 16:44:33,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:44:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:44:34,009 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) [2021-12-17 16:44:34,030 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 [2021-12-17 16:44:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:44:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:44:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:44:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:44:34,312 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:44:34,313 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:44:36,523 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:44:36,538 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:44:36,539 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:44:36,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:44:36 BoogieIcfgContainer [2021-12-17 16:44:36,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:44:36,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:44:36,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:44:36,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:44:36,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:44:32" (1/3) ... [2021-12-17 16:44:36,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b555e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:44:36, skipping insertion in model container [2021-12-17 16:44:36,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:44:33" (2/3) ... [2021-12-17 16:44:36,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b555e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:44:36, skipping insertion in model container [2021-12-17 16:44:36,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:44:36" (3/3) ... [2021-12-17 16:44:36,552 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-17 16:44:36,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:44:36,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-12-17 16:44:36,616 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:44:36,624 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 16:44:36,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-12-17 16:44:36,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 1124 states, 1101 states have (on average 1.8601271571298819) internal successors, (2048), 1123 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-17 16:44:36,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:36,693 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:36,695 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:36,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash -845723877, now seen corresponding path program 1 times [2021-12-17 16:44:36,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:36,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050525522] [2021-12-17 16:44:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:36,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:37,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:37,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050525522] [2021-12-17 16:44:37,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050525522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:37,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:37,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:44:37,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586799557] [2021-12-17 16:44:37,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:37,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:44:37,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:37,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:44:37,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:44:37,239 INFO L87 Difference]: Start difference. First operand has 1124 states, 1101 states have (on average 1.8601271571298819) internal successors, (2048), 1123 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:38,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:38,057 INFO L93 Difference]: Finished difference Result 1702 states and 2998 transitions. [2021-12-17 16:44:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:44:38,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-12-17 16:44:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:38,074 INFO L225 Difference]: With dead ends: 1702 [2021-12-17 16:44:38,074 INFO L226 Difference]: Without dead ends: 913 [2021-12-17 16:44:38,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:44:38,083 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 4598 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4598 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:38,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4598 Valid, 1090 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:44:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2021-12-17 16:44:38,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 913. [2021-12-17 16:44:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 891 states have (on average 1.3052749719416386) internal successors, (1163), 912 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1163 transitions. [2021-12-17 16:44:38,154 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1163 transitions. Word has length 85 [2021-12-17 16:44:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:38,154 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1163 transitions. [2021-12-17 16:44:38,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1163 transitions. [2021-12-17 16:44:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-17 16:44:38,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:38,158 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:38,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:44:38,159 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:38,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1659261908, now seen corresponding path program 1 times [2021-12-17 16:44:38,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:38,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083934901] [2021-12-17 16:44:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:38,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:38,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:38,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083934901] [2021-12-17 16:44:38,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083934901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:38,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:38,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:44:38,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413774272] [2021-12-17 16:44:38,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:38,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:44:38,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:38,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:44:38,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:44:38,274 INFO L87 Difference]: Start difference. First operand 913 states and 1163 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:38,752 INFO L93 Difference]: Finished difference Result 1482 states and 1951 transitions. [2021-12-17 16:44:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:44:38,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-12-17 16:44:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:38,756 INFO L225 Difference]: With dead ends: 1482 [2021-12-17 16:44:38,756 INFO L226 Difference]: Without dead ends: 785 [2021-12-17 16:44:38,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:44:38,759 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 2945 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2945 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:38,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2945 Valid, 587 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:44:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2021-12-17 16:44:38,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2021-12-17 16:44:38,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 763 states have (on average 1.3342070773263435) internal successors, (1018), 784 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:38,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1018 transitions. [2021-12-17 16:44:38,782 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1018 transitions. Word has length 86 [2021-12-17 16:44:38,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:38,782 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 1018 transitions. [2021-12-17 16:44:38,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:38,783 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1018 transitions. [2021-12-17 16:44:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-17 16:44:38,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:38,785 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:38,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:44:38,786 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:38,787 INFO L85 PathProgramCache]: Analyzing trace with hash -354616102, now seen corresponding path program 1 times [2021-12-17 16:44:38,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:38,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597615753] [2021-12-17 16:44:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:38,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:38,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:38,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597615753] [2021-12-17 16:44:38,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597615753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:38,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:38,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:44:38,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406697170] [2021-12-17 16:44:38,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:38,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:44:38,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:38,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:44:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:44:38,874 INFO L87 Difference]: Start difference. First operand 785 states and 1018 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:39,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:39,452 INFO L93 Difference]: Finished difference Result 1700 states and 2275 transitions. [2021-12-17 16:44:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:44:39,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-12-17 16:44:39,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:39,456 INFO L225 Difference]: With dead ends: 1700 [2021-12-17 16:44:39,457 INFO L226 Difference]: Without dead ends: 1046 [2021-12-17 16:44:39,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:44:39,459 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 3648 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3648 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:39,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3648 Valid, 795 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:44:39,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-12-17 16:44:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 966. [2021-12-17 16:44:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 944 states have (on average 1.4057203389830508) internal successors, (1327), 965 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1327 transitions. [2021-12-17 16:44:39,492 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1327 transitions. Word has length 87 [2021-12-17 16:44:39,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:39,493 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1327 transitions. [2021-12-17 16:44:39,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1327 transitions. [2021-12-17 16:44:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-17 16:44:39,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:39,495 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:39,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:44:39,496 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:39,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2037300131, now seen corresponding path program 1 times [2021-12-17 16:44:39,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:39,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930283073] [2021-12-17 16:44:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:39,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:39,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:39,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930283073] [2021-12-17 16:44:39,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930283073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:39,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:39,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:44:39,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176241018] [2021-12-17 16:44:39,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:39,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:44:39,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:39,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:44:39,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:44:39,575 INFO L87 Difference]: Start difference. First operand 966 states and 1327 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:40,074 INFO L93 Difference]: Finished difference Result 1801 states and 2516 transitions. [2021-12-17 16:44:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:44:40,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-12-17 16:44:40,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:40,078 INFO L225 Difference]: With dead ends: 1801 [2021-12-17 16:44:40,079 INFO L226 Difference]: Without dead ends: 946 [2021-12-17 16:44:40,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:44:40,081 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 2496 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:40,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2496 Valid, 446 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:44:40,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-12-17 16:44:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2021-12-17 16:44:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 924 states have (on average 1.408008658008658) internal successors, (1301), 945 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1301 transitions. [2021-12-17 16:44:40,115 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1301 transitions. Word has length 88 [2021-12-17 16:44:40,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:40,115 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1301 transitions. [2021-12-17 16:44:40,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1301 transitions. [2021-12-17 16:44:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 16:44:40,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:40,118 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:40,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:44:40,118 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:40,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1647430021, now seen corresponding path program 1 times [2021-12-17 16:44:40,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:40,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666606148] [2021-12-17 16:44:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:40,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:40,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:40,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666606148] [2021-12-17 16:44:40,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666606148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:40,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:40,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:44:40,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568041499] [2021-12-17 16:44:40,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:40,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:44:40,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:44:40,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:44:40,210 INFO L87 Difference]: Start difference. First operand 946 states and 1301 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:40,649 INFO L93 Difference]: Finished difference Result 1781 states and 2488 transitions. [2021-12-17 16:44:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:44:40,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-12-17 16:44:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:40,654 INFO L225 Difference]: With dead ends: 1781 [2021-12-17 16:44:40,654 INFO L226 Difference]: Without dead ends: 915 [2021-12-17 16:44:40,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:44:40,656 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 2526 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:40,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2526 Valid, 497 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:44:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-12-17 16:44:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2021-12-17 16:44:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 893 states have (on average 1.417693169092945) internal successors, (1266), 914 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1266 transitions. [2021-12-17 16:44:40,691 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1266 transitions. Word has length 89 [2021-12-17 16:44:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:40,691 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1266 transitions. [2021-12-17 16:44:40,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1266 transitions. [2021-12-17 16:44:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 16:44:40,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:40,694 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:40,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:44:40,694 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:40,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:40,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1235398548, now seen corresponding path program 1 times [2021-12-17 16:44:40,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:40,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212635450] [2021-12-17 16:44:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:40,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:40,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:40,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212635450] [2021-12-17 16:44:40,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212635450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:40,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:40,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:44:40,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612650259] [2021-12-17 16:44:40,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:40,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:44:40,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:44:40,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:44:40,767 INFO L87 Difference]: Start difference. First operand 915 states and 1266 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:41,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:41,143 INFO L93 Difference]: Finished difference Result 1750 states and 2451 transitions. [2021-12-17 16:44:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:44:41,144 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-12-17 16:44:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:41,147 INFO L225 Difference]: With dead ends: 1750 [2021-12-17 16:44:41,148 INFO L226 Difference]: Without dead ends: 901 [2021-12-17 16:44:41,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:44:41,150 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 2461 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:41,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2461 Valid, 491 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:44:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-12-17 16:44:41,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2021-12-17 16:44:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4209328782707622) internal successors, (1249), 900 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1249 transitions. [2021-12-17 16:44:41,183 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1249 transitions. Word has length 90 [2021-12-17 16:44:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:41,183 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1249 transitions. [2021-12-17 16:44:41,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1249 transitions. [2021-12-17 16:44:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-17 16:44:41,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:41,186 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:41,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:44:41,186 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:41,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1183984296, now seen corresponding path program 1 times [2021-12-17 16:44:41,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:41,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276362553] [2021-12-17 16:44:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:41,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:41,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:41,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276362553] [2021-12-17 16:44:41,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276362553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:41,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:41,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:44:41,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443484902] [2021-12-17 16:44:41,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:41,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:44:41,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:41,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:44:41,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:44:41,372 INFO L87 Difference]: Start difference. First operand 901 states and 1249 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:42,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:42,415 INFO L93 Difference]: Finished difference Result 1639 states and 2213 transitions. [2021-12-17 16:44:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:44:42,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-17 16:44:42,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:42,420 INFO L225 Difference]: With dead ends: 1639 [2021-12-17 16:44:42,420 INFO L226 Difference]: Without dead ends: 1222 [2021-12-17 16:44:42,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:44:42,422 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 4364 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:42,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4364 Valid, 1371 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:44:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-12-17 16:44:42,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 901. [2021-12-17 16:44:42,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4197952218430034) internal successors, (1248), 900 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1248 transitions. [2021-12-17 16:44:42,463 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1248 transitions. Word has length 91 [2021-12-17 16:44:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:42,464 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1248 transitions. [2021-12-17 16:44:42,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1248 transitions. [2021-12-17 16:44:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-17 16:44:42,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:42,466 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:42,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:44:42,467 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:42,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:42,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1428942257, now seen corresponding path program 1 times [2021-12-17 16:44:42,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:42,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798983447] [2021-12-17 16:44:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:42,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:42,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798983447] [2021-12-17 16:44:42,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798983447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:42,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:42,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:42,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4850397] [2021-12-17 16:44:42,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:42,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:42,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:42,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:42,594 INFO L87 Difference]: Start difference. First operand 901 states and 1248 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:43,693 INFO L93 Difference]: Finished difference Result 1392 states and 1967 transitions. [2021-12-17 16:44:43,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:43,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-17 16:44:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:43,698 INFO L225 Difference]: With dead ends: 1392 [2021-12-17 16:44:43,698 INFO L226 Difference]: Without dead ends: 1128 [2021-12-17 16:44:43,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:44:43,702 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 3621 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:43,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3621 Valid, 2127 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:44:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-12-17 16:44:43,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 901. [2021-12-17 16:44:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4186575654152447) internal successors, (1247), 900 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1247 transitions. [2021-12-17 16:44:43,745 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1247 transitions. Word has length 91 [2021-12-17 16:44:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:43,746 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1247 transitions. [2021-12-17 16:44:43,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1247 transitions. [2021-12-17 16:44:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-17 16:44:43,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:43,749 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:43,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:44:43,750 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:43,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:43,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1459275419, now seen corresponding path program 1 times [2021-12-17 16:44:43,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:43,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505824497] [2021-12-17 16:44:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:43,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:43,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:43,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505824497] [2021-12-17 16:44:43,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505824497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:43,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:43,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:43,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966819659] [2021-12-17 16:44:43,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:43,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:43,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:43,901 INFO L87 Difference]: Start difference. First operand 901 states and 1247 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:45,196 INFO L93 Difference]: Finished difference Result 1917 states and 2715 transitions. [2021-12-17 16:44:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:45,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-17 16:44:45,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:45,204 INFO L225 Difference]: With dead ends: 1917 [2021-12-17 16:44:45,204 INFO L226 Difference]: Without dead ends: 1722 [2021-12-17 16:44:45,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:44:45,205 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 4110 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:45,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4110 Valid, 2596 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 16:44:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-17 16:44:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 901. [2021-12-17 16:44:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4175199089874857) internal successors, (1246), 900 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1246 transitions. [2021-12-17 16:44:45,257 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1246 transitions. Word has length 91 [2021-12-17 16:44:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:45,257 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1246 transitions. [2021-12-17 16:44:45,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1246 transitions. [2021-12-17 16:44:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:44:45,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:45,260 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:45,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:44:45,260 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:45,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:45,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2136143015, now seen corresponding path program 1 times [2021-12-17 16:44:45,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:45,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475528044] [2021-12-17 16:44:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:45,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:45,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:45,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475528044] [2021-12-17 16:44:45,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475528044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:45,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:45,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 16:44:45,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989828759] [2021-12-17 16:44:45,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:45,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 16:44:45,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:45,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 16:44:45,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:44:45,437 INFO L87 Difference]: Start difference. First operand 901 states and 1246 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:46,975 INFO L93 Difference]: Finished difference Result 1763 states and 2494 transitions. [2021-12-17 16:44:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 16:44:46,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:44:46,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:46,981 INFO L225 Difference]: With dead ends: 1763 [2021-12-17 16:44:46,981 INFO L226 Difference]: Without dead ends: 1363 [2021-12-17 16:44:46,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-12-17 16:44:46,983 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 3297 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3297 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:46,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3297 Valid, 3444 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 16:44:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-12-17 16:44:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 901. [2021-12-17 16:44:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4152445961319682) internal successors, (1244), 900 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1244 transitions. [2021-12-17 16:44:47,033 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1244 transitions. Word has length 93 [2021-12-17 16:44:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:47,034 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1244 transitions. [2021-12-17 16:44:47,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1244 transitions. [2021-12-17 16:44:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:44:47,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:47,036 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:47,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 16:44:47,036 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:47,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:47,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2068984294, now seen corresponding path program 1 times [2021-12-17 16:44:47,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:47,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281426464] [2021-12-17 16:44:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:47,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:47,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:47,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281426464] [2021-12-17 16:44:47,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281426464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:47,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:47,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:47,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461690752] [2021-12-17 16:44:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:47,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:47,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:47,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:47,151 INFO L87 Difference]: Start difference. First operand 901 states and 1244 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:48,336 INFO L93 Difference]: Finished difference Result 1884 states and 2657 transitions. [2021-12-17 16:44:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:44:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:48,344 INFO L225 Difference]: With dead ends: 1884 [2021-12-17 16:44:48,344 INFO L226 Difference]: Without dead ends: 1694 [2021-12-17 16:44:48,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:44:48,345 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 4771 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4771 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:48,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4771 Valid, 2415 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:44:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-12-17 16:44:48,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 901. [2021-12-17 16:44:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4129692832764504) internal successors, (1242), 900 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1242 transitions. [2021-12-17 16:44:48,403 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1242 transitions. Word has length 93 [2021-12-17 16:44:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:48,403 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1242 transitions. [2021-12-17 16:44:48,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1242 transitions. [2021-12-17 16:44:48,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:44:48,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:48,406 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:48,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 16:44:48,406 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash 928092964, now seen corresponding path program 1 times [2021-12-17 16:44:48,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:48,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700600387] [2021-12-17 16:44:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:48,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:48,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:48,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700600387] [2021-12-17 16:44:48,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700600387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:48,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:48,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:48,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579167915] [2021-12-17 16:44:48,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:48,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:48,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:48,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:48,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:48,581 INFO L87 Difference]: Start difference. First operand 901 states and 1242 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:49,938 INFO L93 Difference]: Finished difference Result 1966 states and 2774 transitions. [2021-12-17 16:44:49,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:49,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:44:49,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:49,944 INFO L225 Difference]: With dead ends: 1966 [2021-12-17 16:44:49,944 INFO L226 Difference]: Without dead ends: 1722 [2021-12-17 16:44:49,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:44:49,945 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 3767 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3767 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:49,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3767 Valid, 3289 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 16:44:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-17 16:44:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 901. [2021-12-17 16:44:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.410693970420933) internal successors, (1240), 900 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1240 transitions. [2021-12-17 16:44:50,004 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1240 transitions. Word has length 93 [2021-12-17 16:44:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:50,004 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1240 transitions. [2021-12-17 16:44:50,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1240 transitions. [2021-12-17 16:44:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:44:50,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:50,007 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:50,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 16:44:50,007 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash 538302253, now seen corresponding path program 1 times [2021-12-17 16:44:50,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:50,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382895787] [2021-12-17 16:44:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:50,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:50,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:50,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382895787] [2021-12-17 16:44:50,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382895787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:50,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:50,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:50,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996071601] [2021-12-17 16:44:50,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:50,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:50,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:50,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:50,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:50,164 INFO L87 Difference]: Start difference. First operand 901 states and 1240 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:51,369 INFO L93 Difference]: Finished difference Result 1865 states and 2626 transitions. [2021-12-17 16:44:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:51,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:44:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:51,374 INFO L225 Difference]: With dead ends: 1865 [2021-12-17 16:44:51,374 INFO L226 Difference]: Without dead ends: 1694 [2021-12-17 16:44:51,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:44:51,375 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 4526 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4526 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:51,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4526 Valid, 2592 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:44:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-12-17 16:44:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 901. [2021-12-17 16:44:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4095563139931742) internal successors, (1239), 900 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1239 transitions. [2021-12-17 16:44:51,434 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1239 transitions. Word has length 93 [2021-12-17 16:44:51,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:51,435 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1239 transitions. [2021-12-17 16:44:51,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1239 transitions. [2021-12-17 16:44:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:44:51,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:51,437 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:51,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 16:44:51,437 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash -350742557, now seen corresponding path program 1 times [2021-12-17 16:44:51,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:51,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086184486] [2021-12-17 16:44:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:51,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:51,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:51,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086184486] [2021-12-17 16:44:51,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086184486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:51,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:51,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:51,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364656057] [2021-12-17 16:44:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:51,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:51,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:51,563 INFO L87 Difference]: Start difference. First operand 901 states and 1239 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:52,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:52,723 INFO L93 Difference]: Finished difference Result 1932 states and 2721 transitions. [2021-12-17 16:44:52,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:52,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:44:52,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:52,728 INFO L225 Difference]: With dead ends: 1932 [2021-12-17 16:44:52,728 INFO L226 Difference]: Without dead ends: 1722 [2021-12-17 16:44:52,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:44:52,729 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 3762 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3762 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:52,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3762 Valid, 3160 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:44:52,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-17 16:44:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 901. [2021-12-17 16:44:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4084186575654152) internal successors, (1238), 900 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1238 transitions. [2021-12-17 16:44:52,790 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1238 transitions. Word has length 93 [2021-12-17 16:44:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:52,790 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1238 transitions. [2021-12-17 16:44:52,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1238 transitions. [2021-12-17 16:44:52,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:44:52,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:52,792 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:52,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 16:44:52,793 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:52,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:52,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1779757049, now seen corresponding path program 1 times [2021-12-17 16:44:52,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:52,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865370919] [2021-12-17 16:44:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:52,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:52,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865370919] [2021-12-17 16:44:52,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865370919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:52,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:52,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:52,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425061441] [2021-12-17 16:44:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:52,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:52,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:52,917 INFO L87 Difference]: Start difference. First operand 901 states and 1238 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:54,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:54,143 INFO L93 Difference]: Finished difference Result 1859 states and 2618 transitions. [2021-12-17 16:44:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:54,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:44:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:54,156 INFO L225 Difference]: With dead ends: 1859 [2021-12-17 16:44:54,157 INFO L226 Difference]: Without dead ends: 1694 [2021-12-17 16:44:54,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:44:54,158 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 4304 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:54,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4304 Valid, 2758 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:44:54,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-12-17 16:44:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 901. [2021-12-17 16:44:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4072810011376564) internal successors, (1237), 900 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1237 transitions. [2021-12-17 16:44:54,217 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1237 transitions. Word has length 93 [2021-12-17 16:44:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:54,218 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1237 transitions. [2021-12-17 16:44:54,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1237 transitions. [2021-12-17 16:44:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:44:54,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:54,220 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:54,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 16:44:54,220 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:54,221 INFO L85 PathProgramCache]: Analyzing trace with hash 162924990, now seen corresponding path program 1 times [2021-12-17 16:44:54,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:54,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924064849] [2021-12-17 16:44:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:54,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:54,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:54,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924064849] [2021-12-17 16:44:54,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924064849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:54,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:54,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:54,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157310471] [2021-12-17 16:44:54,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:54,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:54,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:54,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:54,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:54,328 INFO L87 Difference]: Start difference. First operand 901 states and 1237 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:55,438 INFO L93 Difference]: Finished difference Result 1865 states and 2622 transitions. [2021-12-17 16:44:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:55,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:44:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:55,443 INFO L225 Difference]: With dead ends: 1865 [2021-12-17 16:44:55,443 INFO L226 Difference]: Without dead ends: 1694 [2021-12-17 16:44:55,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:44:55,444 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 3162 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3162 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:55,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3162 Valid, 2915 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:44:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-12-17 16:44:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 901. [2021-12-17 16:44:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4061433447098977) internal successors, (1236), 900 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1236 transitions. [2021-12-17 16:44:55,512 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1236 transitions. Word has length 93 [2021-12-17 16:44:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:55,512 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1236 transitions. [2021-12-17 16:44:55,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1236 transitions. [2021-12-17 16:44:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:44:55,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:55,515 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:55,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 16:44:55,515 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:55,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:55,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1878690134, now seen corresponding path program 1 times [2021-12-17 16:44:55,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:55,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279097691] [2021-12-17 16:44:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:55,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:55,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:55,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279097691] [2021-12-17 16:44:55,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279097691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:55,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:55,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:55,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112072901] [2021-12-17 16:44:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:55,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:55,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:55,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:55,620 INFO L87 Difference]: Start difference. First operand 901 states and 1236 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:56,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:56,758 INFO L93 Difference]: Finished difference Result 1896 states and 2662 transitions. [2021-12-17 16:44:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:56,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:44:56,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:56,763 INFO L225 Difference]: With dead ends: 1896 [2021-12-17 16:44:56,763 INFO L226 Difference]: Without dead ends: 1694 [2021-12-17 16:44:56,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:44:56,764 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 4641 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:56,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4641 Valid, 2638 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:44:56,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-12-17 16:44:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 901. [2021-12-17 16:44:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.40386803185438) internal successors, (1234), 900 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1234 transitions. [2021-12-17 16:44:56,830 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1234 transitions. Word has length 95 [2021-12-17 16:44:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:56,830 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1234 transitions. [2021-12-17 16:44:56,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1234 transitions. [2021-12-17 16:44:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:44:56,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:56,833 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:56,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 16:44:56,833 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:56,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1469844906, now seen corresponding path program 1 times [2021-12-17 16:44:56,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:56,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889158580] [2021-12-17 16:44:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:56,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:56,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:56,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889158580] [2021-12-17 16:44:56,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889158580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:56,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:56,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:56,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704038595] [2021-12-17 16:44:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:56,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:56,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:56,949 INFO L87 Difference]: Start difference. First operand 901 states and 1234 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:58,155 INFO L93 Difference]: Finished difference Result 1838 states and 2573 transitions. [2021-12-17 16:44:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:58,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:44:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:58,159 INFO L225 Difference]: With dead ends: 1838 [2021-12-17 16:44:58,159 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:44:58,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:44:58,160 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 3832 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3832 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:58,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3832 Valid, 3226 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:44:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:44:58,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 901. [2021-12-17 16:44:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.4015927189988624) internal successors, (1232), 900 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1232 transitions. [2021-12-17 16:44:58,216 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1232 transitions. Word has length 95 [2021-12-17 16:44:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:58,217 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1232 transitions. [2021-12-17 16:44:58,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1232 transitions. [2021-12-17 16:44:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:44:58,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:58,219 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:58,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 16:44:58,219 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:58,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2020844490, now seen corresponding path program 1 times [2021-12-17 16:44:58,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:58,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334349570] [2021-12-17 16:44:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:58,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:58,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:58,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334349570] [2021-12-17 16:44:58,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334349570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:58,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:58,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:58,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573183271] [2021-12-17 16:44:58,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:58,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:58,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:58,333 INFO L87 Difference]: Start difference. First operand 901 states and 1232 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:44:59,730 INFO L93 Difference]: Finished difference Result 1998 states and 2797 transitions. [2021-12-17 16:44:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:44:59,730 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:44:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:44:59,737 INFO L225 Difference]: With dead ends: 1998 [2021-12-17 16:44:59,737 INFO L226 Difference]: Without dead ends: 1722 [2021-12-17 16:44:59,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:44:59,738 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 2932 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 2852 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 3796 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:44:59,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2932 Valid, 3796 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2852 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 16:44:59,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-17 16:44:59,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 901. [2021-12-17 16:44:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.3993174061433447) internal successors, (1230), 900 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1230 transitions. [2021-12-17 16:44:59,809 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1230 transitions. Word has length 95 [2021-12-17 16:44:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:44:59,809 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1230 transitions. [2021-12-17 16:44:59,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:44:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1230 transitions. [2021-12-17 16:44:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:44:59,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:44:59,811 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:44:59,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 16:44:59,811 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:44:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:44:59,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1920722797, now seen corresponding path program 1 times [2021-12-17 16:44:59,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:44:59,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805339020] [2021-12-17 16:44:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:44:59,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:44:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:44:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:44:59,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:44:59,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805339020] [2021-12-17 16:44:59,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805339020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:44:59,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:44:59,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:44:59,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735855952] [2021-12-17 16:44:59,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:44:59,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:44:59,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:44:59,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:44:59,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:44:59,923 INFO L87 Difference]: Start difference. First operand 901 states and 1230 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:01,207 INFO L93 Difference]: Finished difference Result 1832 states and 2562 transitions. [2021-12-17 16:45:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:01,208 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:01,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:01,215 INFO L225 Difference]: With dead ends: 1832 [2021-12-17 16:45:01,215 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:01,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:01,217 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 3725 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3725 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:01,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3725 Valid, 3433 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:01,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 901. [2021-12-17 16:45:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.3970420932878271) internal successors, (1228), 900 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1228 transitions. [2021-12-17 16:45:01,284 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1228 transitions. Word has length 95 [2021-12-17 16:45:01,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:01,284 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1228 transitions. [2021-12-17 16:45:01,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1228 transitions. [2021-12-17 16:45:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:01,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:01,285 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:01,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 16:45:01,286 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:01,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash -523524958, now seen corresponding path program 1 times [2021-12-17 16:45:01,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:01,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464481455] [2021-12-17 16:45:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:01,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:01,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:01,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464481455] [2021-12-17 16:45:01,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464481455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:01,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:01,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:01,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198087632] [2021-12-17 16:45:01,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:01,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:01,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:01,468 INFO L87 Difference]: Start difference. First operand 901 states and 1228 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:03,674 INFO L93 Difference]: Finished difference Result 2732 states and 3888 transitions. [2021-12-17 16:45:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:03,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:03,679 INFO L225 Difference]: With dead ends: 2732 [2021-12-17 16:45:03,680 INFO L226 Difference]: Without dead ends: 2568 [2021-12-17 16:45:03,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:03,681 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 6382 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 2856 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 2856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:03,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6382 Valid, 3402 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 2856 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 16:45:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-12-17 16:45:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 909. [2021-12-17 16:45:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 887 states have (on average 1.3934611048478016) internal successors, (1236), 908 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1236 transitions. [2021-12-17 16:45:03,750 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1236 transitions. Word has length 95 [2021-12-17 16:45:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:03,750 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1236 transitions. [2021-12-17 16:45:03,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1236 transitions. [2021-12-17 16:45:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:03,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:03,752 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:03,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 16:45:03,752 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash -891627133, now seen corresponding path program 1 times [2021-12-17 16:45:03,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:03,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336923780] [2021-12-17 16:45:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:03,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:03,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:03,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336923780] [2021-12-17 16:45:03,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336923780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:03,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:03,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:03,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325208000] [2021-12-17 16:45:03,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:03,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:03,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:03,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:03,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:03,867 INFO L87 Difference]: Start difference. First operand 909 states and 1236 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:05,139 INFO L93 Difference]: Finished difference Result 1834 states and 2559 transitions. [2021-12-17 16:45:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:05,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:05,142 INFO L225 Difference]: With dead ends: 1834 [2021-12-17 16:45:05,143 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:05,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:05,144 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 3739 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3739 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:05,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3739 Valid, 3398 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:05,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 909. [2021-12-17 16:45:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 887 states have (on average 1.391206313416009) internal successors, (1234), 908 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1234 transitions. [2021-12-17 16:45:05,222 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1234 transitions. Word has length 95 [2021-12-17 16:45:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:05,222 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1234 transitions. [2021-12-17 16:45:05,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:05,222 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1234 transitions. [2021-12-17 16:45:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:05,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:05,224 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:05,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 16:45:05,224 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -482781905, now seen corresponding path program 1 times [2021-12-17 16:45:05,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:05,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186319641] [2021-12-17 16:45:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:05,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:05,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:05,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186319641] [2021-12-17 16:45:05,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186319641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:05,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:05,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:05,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733842059] [2021-12-17 16:45:05,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:05,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:05,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:05,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:05,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:05,323 INFO L87 Difference]: Start difference. First operand 909 states and 1234 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:06,503 INFO L93 Difference]: Finished difference Result 1892 states and 2639 transitions. [2021-12-17 16:45:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:06,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:06,506 INFO L225 Difference]: With dead ends: 1892 [2021-12-17 16:45:06,506 INFO L226 Difference]: Without dead ends: 1702 [2021-12-17 16:45:06,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:06,507 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 3845 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3845 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:06,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3845 Valid, 3155 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:45:06,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-12-17 16:45:06,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 909. [2021-12-17 16:45:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 887 states have (on average 1.3889515219842166) internal successors, (1232), 908 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1232 transitions. [2021-12-17 16:45:06,587 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1232 transitions. Word has length 95 [2021-12-17 16:45:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:06,588 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1232 transitions. [2021-12-17 16:45:06,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1232 transitions. [2021-12-17 16:45:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:06,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:06,589 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:06,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 16:45:06,590 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1112928597, now seen corresponding path program 1 times [2021-12-17 16:45:06,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:06,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938400537] [2021-12-17 16:45:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:06,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:06,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:06,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938400537] [2021-12-17 16:45:06,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938400537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:06,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:06,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:06,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252660329] [2021-12-17 16:45:06,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:06,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:06,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:06,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:06,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:06,759 INFO L87 Difference]: Start difference. First operand 909 states and 1232 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:08,988 INFO L93 Difference]: Finished difference Result 2720 states and 3866 transitions. [2021-12-17 16:45:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:08,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:08,992 INFO L225 Difference]: With dead ends: 2720 [2021-12-17 16:45:08,992 INFO L226 Difference]: Without dead ends: 2562 [2021-12-17 16:45:08,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:08,993 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 6001 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6001 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 3579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:08,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6001 Valid, 3588 Invalid, 3579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 16:45:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2021-12-17 16:45:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 913. [2021-12-17 16:45:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 891 states have (on average 1.387205387205387) internal successors, (1236), 912 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1236 transitions. [2021-12-17 16:45:09,077 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1236 transitions. Word has length 95 [2021-12-17 16:45:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:09,077 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1236 transitions. [2021-12-17 16:45:09,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1236 transitions. [2021-12-17 16:45:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:09,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:09,079 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:09,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 16:45:09,079 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash -738270563, now seen corresponding path program 1 times [2021-12-17 16:45:09,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:09,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645961505] [2021-12-17 16:45:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:09,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:09,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:09,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645961505] [2021-12-17 16:45:09,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645961505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:09,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:09,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:09,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735899309] [2021-12-17 16:45:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:09,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:09,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:09,190 INFO L87 Difference]: Start difference. First operand 913 states and 1236 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:10,480 INFO L93 Difference]: Finished difference Result 1824 states and 2542 transitions. [2021-12-17 16:45:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:10,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:10,483 INFO L225 Difference]: With dead ends: 1824 [2021-12-17 16:45:10,483 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:10,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:10,484 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 3794 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3794 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:10,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3794 Valid, 3274 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 913. [2021-12-17 16:45:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 891 states have (on average 1.3860830527497194) internal successors, (1235), 912 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1235 transitions. [2021-12-17 16:45:10,562 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1235 transitions. Word has length 95 [2021-12-17 16:45:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:10,562 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1235 transitions. [2021-12-17 16:45:10,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1235 transitions. [2021-12-17 16:45:10,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:10,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:10,564 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:10,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 16:45:10,565 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:10,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1153671650, now seen corresponding path program 1 times [2021-12-17 16:45:10,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:10,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202305205] [2021-12-17 16:45:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:10,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:10,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:10,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202305205] [2021-12-17 16:45:10,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202305205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:10,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:10,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:10,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728057561] [2021-12-17 16:45:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:10,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:10,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:10,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:10,670 INFO L87 Difference]: Start difference. First operand 913 states and 1235 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:11,822 INFO L93 Difference]: Finished difference Result 1886 states and 2624 transitions. [2021-12-17 16:45:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:11,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:11,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:11,825 INFO L225 Difference]: With dead ends: 1886 [2021-12-17 16:45:11,825 INFO L226 Difference]: Without dead ends: 1706 [2021-12-17 16:45:11,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:11,826 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 2105 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:11,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 3100 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:45:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-12-17 16:45:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 913. [2021-12-17 16:45:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 891 states have (on average 1.3849607182940515) internal successors, (1234), 912 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1234 transitions. [2021-12-17 16:45:11,901 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1234 transitions. Word has length 95 [2021-12-17 16:45:11,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:11,901 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1234 transitions. [2021-12-17 16:45:11,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1234 transitions. [2021-12-17 16:45:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:11,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:11,902 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:11,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 16:45:11,903 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:11,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash 744826422, now seen corresponding path program 1 times [2021-12-17 16:45:11,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:11,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600702194] [2021-12-17 16:45:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:11,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:12,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:12,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600702194] [2021-12-17 16:45:12,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600702194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:12,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:12,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:12,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404582561] [2021-12-17 16:45:12,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:12,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:12,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:12,026 INFO L87 Difference]: Start difference. First operand 913 states and 1234 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:13,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:13,365 INFO L93 Difference]: Finished difference Result 1828 states and 2544 transitions. [2021-12-17 16:45:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:13,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:13,369 INFO L225 Difference]: With dead ends: 1828 [2021-12-17 16:45:13,369 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:13,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:13,370 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 3651 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3651 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:13,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3651 Valid, 3576 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 913. [2021-12-17 16:45:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 891 states have (on average 1.3838383838383839) internal successors, (1233), 912 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:13,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1233 transitions. [2021-12-17 16:45:13,441 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1233 transitions. Word has length 95 [2021-12-17 16:45:13,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:13,442 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1233 transitions. [2021-12-17 16:45:13,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:13,442 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1233 transitions. [2021-12-17 16:45:13,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:13,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:13,443 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:13,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 16:45:13,443 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:13,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1037319048, now seen corresponding path program 1 times [2021-12-17 16:45:13,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:13,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27831441] [2021-12-17 16:45:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:13,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:13,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:13,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27831441] [2021-12-17 16:45:13,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27831441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:13,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:13,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:13,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762137417] [2021-12-17 16:45:13,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:13,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:13,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:13,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:13,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:13,610 INFO L87 Difference]: Start difference. First operand 913 states and 1233 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:15,819 INFO L93 Difference]: Finished difference Result 2712 states and 3854 transitions. [2021-12-17 16:45:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:15,824 INFO L225 Difference]: With dead ends: 2712 [2021-12-17 16:45:15,824 INFO L226 Difference]: Without dead ends: 2558 [2021-12-17 16:45:15,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:15,826 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 5971 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5971 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:15,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5971 Valid, 3245 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 16:45:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-12-17 16:45:15,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 917. [2021-12-17 16:45:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 1.382122905027933) internal successors, (1237), 916 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:15,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1237 transitions. [2021-12-17 16:45:15,939 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1237 transitions. Word has length 95 [2021-12-17 16:45:15,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:15,940 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1237 transitions. [2021-12-17 16:45:15,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:15,940 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1237 transitions. [2021-12-17 16:45:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:15,941 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:15,942 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:15,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 16:45:15,942 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash -359034935, now seen corresponding path program 1 times [2021-12-17 16:45:15,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:15,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141979592] [2021-12-17 16:45:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:15,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:16,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:16,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141979592] [2021-12-17 16:45:16,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141979592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:16,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:16,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:16,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6349999] [2021-12-17 16:45:16,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:16,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:16,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:16,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:16,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:16,052 INFO L87 Difference]: Start difference. First operand 917 states and 1237 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:17,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:17,421 INFO L93 Difference]: Finished difference Result 1822 states and 2536 transitions. [2021-12-17 16:45:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:17,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:17,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:17,425 INFO L225 Difference]: With dead ends: 1822 [2021-12-17 16:45:17,425 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:17,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:17,426 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 3749 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3749 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:17,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3749 Valid, 3343 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 917. [2021-12-17 16:45:17,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 1.3810055865921789) internal successors, (1236), 916 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1236 transitions. [2021-12-17 16:45:17,551 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1236 transitions. Word has length 95 [2021-12-17 16:45:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:17,552 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1236 transitions. [2021-12-17 16:45:17,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1236 transitions. [2021-12-17 16:45:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:17,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:17,554 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:17,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 16:45:17,554 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1152638694, now seen corresponding path program 1 times [2021-12-17 16:45:17,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:17,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097073685] [2021-12-17 16:45:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:17,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:17,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:17,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097073685] [2021-12-17 16:45:17,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097073685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:17,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:17,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:17,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913734864] [2021-12-17 16:45:17,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:17,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:17,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:17,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:17,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:17,748 INFO L87 Difference]: Start difference. First operand 917 states and 1236 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:20,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:20,175 INFO L93 Difference]: Finished difference Result 2720 states and 3858 transitions. [2021-12-17 16:45:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:20,176 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:20,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:20,179 INFO L225 Difference]: With dead ends: 2720 [2021-12-17 16:45:20,179 INFO L226 Difference]: Without dead ends: 2562 [2021-12-17 16:45:20,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:20,180 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 7062 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7062 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:20,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7062 Valid, 3949 Invalid, 3941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 3203 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 16:45:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2021-12-17 16:45:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 921. [2021-12-17 16:45:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 899 states have (on average 1.3793103448275863) internal successors, (1240), 920 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1240 transitions. [2021-12-17 16:45:20,262 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1240 transitions. Word has length 95 [2021-12-17 16:45:20,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:20,263 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1240 transitions. [2021-12-17 16:45:20,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1240 transitions. [2021-12-17 16:45:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:45:20,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:20,264 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:20,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 16:45:20,264 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:20,264 INFO L85 PathProgramCache]: Analyzing trace with hash -698776940, now seen corresponding path program 1 times [2021-12-17 16:45:20,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:20,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794120110] [2021-12-17 16:45:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:20,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:20,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794120110] [2021-12-17 16:45:20,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794120110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:20,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:20,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:20,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865663301] [2021-12-17 16:45:20,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:20,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:20,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:20,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:20,374 INFO L87 Difference]: Start difference. First operand 921 states and 1240 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:21,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:21,688 INFO L93 Difference]: Finished difference Result 1824 states and 2536 transitions. [2021-12-17 16:45:21,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:21,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:45:21,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:21,691 INFO L225 Difference]: With dead ends: 1824 [2021-12-17 16:45:21,691 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:21,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:21,692 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 3760 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3760 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:21,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3760 Valid, 3311 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:45:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 921. [2021-12-17 16:45:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 899 states have (on average 1.3781979977753058) internal successors, (1239), 920 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1239 transitions. [2021-12-17 16:45:21,809 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1239 transitions. Word has length 95 [2021-12-17 16:45:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:21,809 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1239 transitions. [2021-12-17 16:45:21,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1239 transitions. [2021-12-17 16:45:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:45:21,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:21,811 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:21,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 16:45:21,812 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:21,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1717932859, now seen corresponding path program 1 times [2021-12-17 16:45:21,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:21,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535534619] [2021-12-17 16:45:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:21,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:21,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:21,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535534619] [2021-12-17 16:45:21,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535534619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:21,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:21,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:21,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483598487] [2021-12-17 16:45:21,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:21,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:21,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:21,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:21,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:21,917 INFO L87 Difference]: Start difference. First operand 921 states and 1239 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:23,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:23,144 INFO L93 Difference]: Finished difference Result 1834 states and 2547 transitions. [2021-12-17 16:45:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:23,145 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-17 16:45:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:23,147 INFO L225 Difference]: With dead ends: 1834 [2021-12-17 16:45:23,147 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:23,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:23,148 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 3054 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3054 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:23,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3054 Valid, 2872 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:45:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:23,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 913. [2021-12-17 16:45:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 891 states have (on average 1.3793490460157127) internal successors, (1229), 912 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1229 transitions. [2021-12-17 16:45:23,233 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1229 transitions. Word has length 96 [2021-12-17 16:45:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:23,234 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1229 transitions. [2021-12-17 16:45:23,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1229 transitions. [2021-12-17 16:45:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:45:23,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:23,235 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:23,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 16:45:23,236 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash 908385995, now seen corresponding path program 1 times [2021-12-17 16:45:23,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:23,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183463089] [2021-12-17 16:45:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:23,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:23,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:23,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183463089] [2021-12-17 16:45:23,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183463089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:23,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:23,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:23,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625122890] [2021-12-17 16:45:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:23,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:23,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:23,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:23,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:23,345 INFO L87 Difference]: Start difference. First operand 913 states and 1229 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:24,609 INFO L93 Difference]: Finished difference Result 1828 states and 2537 transitions. [2021-12-17 16:45:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:24,610 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-17 16:45:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:24,612 INFO L225 Difference]: With dead ends: 1828 [2021-12-17 16:45:24,612 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:24,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:24,613 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 2049 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:24,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2049 Valid, 2908 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:45:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 909. [2021-12-17 16:45:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 887 states have (on average 1.3799323562570462) internal successors, (1224), 908 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1224 transitions. [2021-12-17 16:45:24,745 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1224 transitions. Word has length 96 [2021-12-17 16:45:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:24,745 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1224 transitions. [2021-12-17 16:45:24,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1224 transitions. [2021-12-17 16:45:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:45:24,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:24,747 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:24,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 16:45:24,747 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:24,747 INFO L85 PathProgramCache]: Analyzing trace with hash 180481878, now seen corresponding path program 1 times [2021-12-17 16:45:24,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:24,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965454331] [2021-12-17 16:45:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:24,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:24,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:24,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965454331] [2021-12-17 16:45:24,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965454331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:24,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:24,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:24,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354771221] [2021-12-17 16:45:24,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:24,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:24,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:24,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:24,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:24,843 INFO L87 Difference]: Start difference. First operand 909 states and 1224 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:26,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:26,143 INFO L93 Difference]: Finished difference Result 1824 states and 2532 transitions. [2021-12-17 16:45:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:26,144 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-17 16:45:26,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:26,145 INFO L225 Difference]: With dead ends: 1824 [2021-12-17 16:45:26,145 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:26,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:26,146 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 2044 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:26,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2044 Valid, 2926 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:45:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 905. [2021-12-17 16:45:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 883 states have (on average 1.3805209513023782) internal successors, (1219), 904 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1219 transitions. [2021-12-17 16:45:26,233 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1219 transitions. Word has length 96 [2021-12-17 16:45:26,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:26,233 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1219 transitions. [2021-12-17 16:45:26,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1219 transitions. [2021-12-17 16:45:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:45:26,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:26,235 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:26,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 16:45:26,235 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2139399220, now seen corresponding path program 1 times [2021-12-17 16:45:26,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:26,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302615482] [2021-12-17 16:45:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:26,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:26,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:26,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302615482] [2021-12-17 16:45:26,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302615482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:26,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:26,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:26,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989362457] [2021-12-17 16:45:26,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:26,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:26,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:26,330 INFO L87 Difference]: Start difference. First operand 905 states and 1219 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:27,566 INFO L93 Difference]: Finished difference Result 1828 states and 2534 transitions. [2021-12-17 16:45:27,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:27,567 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-17 16:45:27,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:27,568 INFO L225 Difference]: With dead ends: 1828 [2021-12-17 16:45:27,568 INFO L226 Difference]: Without dead ends: 1670 [2021-12-17 16:45:27,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:27,569 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 2019 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:27,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2019 Valid, 2964 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:45:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-12-17 16:45:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 901. [2021-12-17 16:45:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.3811149032992036) internal successors, (1214), 900 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1214 transitions. [2021-12-17 16:45:27,689 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1214 transitions. Word has length 96 [2021-12-17 16:45:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:27,690 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1214 transitions. [2021-12-17 16:45:27,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1214 transitions. [2021-12-17 16:45:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:27,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:27,692 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:27,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 16:45:27,692 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1541256586, now seen corresponding path program 1 times [2021-12-17 16:45:27,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:27,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976343254] [2021-12-17 16:45:27,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:27,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:27,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:27,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976343254] [2021-12-17 16:45:27,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976343254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:27,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:27,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:27,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42843244] [2021-12-17 16:45:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:27,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:27,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:27,807 INFO L87 Difference]: Start difference. First operand 901 states and 1214 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:29,204 INFO L93 Difference]: Finished difference Result 1772 states and 2444 transitions. [2021-12-17 16:45:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:29,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:29,206 INFO L225 Difference]: With dead ends: 1772 [2021-12-17 16:45:29,206 INFO L226 Difference]: Without dead ends: 1622 [2021-12-17 16:45:29,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:29,207 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 3636 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3636 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:29,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3636 Valid, 3199 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-12-17 16:45:29,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 901. [2021-12-17 16:45:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.378839590443686) internal successors, (1212), 900 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:29,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1212 transitions. [2021-12-17 16:45:29,312 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1212 transitions. Word has length 97 [2021-12-17 16:45:29,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:29,313 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1212 transitions. [2021-12-17 16:45:29,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1212 transitions. [2021-12-17 16:45:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:29,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:29,314 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:29,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 16:45:29,314 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:29,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1487727486, now seen corresponding path program 1 times [2021-12-17 16:45:29,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:29,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411370264] [2021-12-17 16:45:29,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:29,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:29,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:29,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411370264] [2021-12-17 16:45:29,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411370264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:29,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:29,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:29,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101226608] [2021-12-17 16:45:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:29,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:29,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:29,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:29,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:29,490 INFO L87 Difference]: Start difference. First operand 901 states and 1212 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:31,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:31,717 INFO L93 Difference]: Finished difference Result 2504 states and 3520 transitions. [2021-12-17 16:45:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:31,717 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:31,720 INFO L225 Difference]: With dead ends: 2504 [2021-12-17 16:45:31,720 INFO L226 Difference]: Without dead ends: 2350 [2021-12-17 16:45:31,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:31,721 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 7008 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7008 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:31,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7008 Valid, 2805 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 16:45:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2021-12-17 16:45:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 909. [2021-12-17 16:45:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 887 states have (on average 1.3754227733934612) internal successors, (1220), 908 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1220 transitions. [2021-12-17 16:45:31,846 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1220 transitions. Word has length 97 [2021-12-17 16:45:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:31,846 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1220 transitions. [2021-12-17 16:45:31,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1220 transitions. [2021-12-17 16:45:31,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:31,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:31,848 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:31,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 16:45:31,848 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2052103235, now seen corresponding path program 1 times [2021-12-17 16:45:31,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:31,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265373054] [2021-12-17 16:45:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:31,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:31,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:31,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265373054] [2021-12-17 16:45:31,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265373054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:31,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:31,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:31,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837492034] [2021-12-17 16:45:31,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:31,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:31,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:31,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:31,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:31,955 INFO L87 Difference]: Start difference. First operand 909 states and 1220 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:33,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:33,361 INFO L93 Difference]: Finished difference Result 1776 states and 2445 transitions. [2021-12-17 16:45:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:33,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:33,364 INFO L225 Difference]: With dead ends: 1776 [2021-12-17 16:45:33,364 INFO L226 Difference]: Without dead ends: 1622 [2021-12-17 16:45:33,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:33,364 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 3734 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3734 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:33,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3734 Valid, 2981 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-12-17 16:45:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 909. [2021-12-17 16:45:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 887 states have (on average 1.3731679819616684) internal successors, (1218), 908 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1218 transitions. [2021-12-17 16:45:33,476 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1218 transitions. Word has length 97 [2021-12-17 16:45:33,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:33,476 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1218 transitions. [2021-12-17 16:45:33,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1218 transitions. [2021-12-17 16:45:33,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:33,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:33,477 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:33,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-17 16:45:33,478 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:33,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash -139906133, now seen corresponding path program 1 times [2021-12-17 16:45:33,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:33,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430877955] [2021-12-17 16:45:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:33,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:33,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430877955] [2021-12-17 16:45:33,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430877955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:33,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:33,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:33,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002527329] [2021-12-17 16:45:33,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:33,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:33,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:33,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:33,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:33,647 INFO L87 Difference]: Start difference. First operand 909 states and 1218 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:36,179 INFO L93 Difference]: Finished difference Result 2752 states and 3885 transitions. [2021-12-17 16:45:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:36,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:36,182 INFO L225 Difference]: With dead ends: 2752 [2021-12-17 16:45:36,182 INFO L226 Difference]: Without dead ends: 2582 [2021-12-17 16:45:36,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:36,184 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 6947 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6947 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:36,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6947 Valid, 3726 Invalid, 3681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [710 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 16:45:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2021-12-17 16:45:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 917. [2021-12-17 16:45:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 1.3698324022346369) internal successors, (1226), 916 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1226 transitions. [2021-12-17 16:45:36,292 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1226 transitions. Word has length 97 [2021-12-17 16:45:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:36,292 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1226 transitions. [2021-12-17 16:45:36,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:36,293 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1226 transitions. [2021-12-17 16:45:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:36,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:36,294 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:36,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-17 16:45:36,295 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:36,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:36,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1430230902, now seen corresponding path program 1 times [2021-12-17 16:45:36,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:36,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540634463] [2021-12-17 16:45:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:36,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:36,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:36,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540634463] [2021-12-17 16:45:36,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540634463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:36,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:36,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:36,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938732311] [2021-12-17 16:45:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:36,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:36,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:36,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:36,409 INFO L87 Difference]: Start difference. First operand 917 states and 1226 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:37,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:37,837 INFO L93 Difference]: Finished difference Result 1784 states and 2451 transitions. [2021-12-17 16:45:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:37,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:37,839 INFO L225 Difference]: With dead ends: 1784 [2021-12-17 16:45:37,840 INFO L226 Difference]: Without dead ends: 1630 [2021-12-17 16:45:37,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:37,841 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 3730 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3730 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:37,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3730 Valid, 2981 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-12-17 16:45:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 917. [2021-12-17 16:45:37,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 1.3675977653631284) internal successors, (1224), 916 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1224 transitions. [2021-12-17 16:45:37,958 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1224 transitions. Word has length 97 [2021-12-17 16:45:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:37,958 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1224 transitions. [2021-12-17 16:45:37,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1224 transitions. [2021-12-17 16:45:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:37,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:37,960 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:37,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-17 16:45:37,962 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:37,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:37,962 INFO L85 PathProgramCache]: Analyzing trace with hash -952539292, now seen corresponding path program 1 times [2021-12-17 16:45:37,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:37,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220972620] [2021-12-17 16:45:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:37,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:38,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220972620] [2021-12-17 16:45:38,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220972620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:38,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:38,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:38,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320781544] [2021-12-17 16:45:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:38,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:38,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:38,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:38,076 INFO L87 Difference]: Start difference. First operand 917 states and 1224 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:39,512 INFO L93 Difference]: Finished difference Result 1848 states and 2547 transitions. [2021-12-17 16:45:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:39,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:39,514 INFO L225 Difference]: With dead ends: 1848 [2021-12-17 16:45:39,514 INFO L226 Difference]: Without dead ends: 1678 [2021-12-17 16:45:39,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:39,516 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 3704 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3704 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:39,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3704 Valid, 3367 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:39,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2021-12-17 16:45:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 917. [2021-12-17 16:45:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 1.3653631284916201) internal successors, (1222), 916 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1222 transitions. [2021-12-17 16:45:39,629 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1222 transitions. Word has length 97 [2021-12-17 16:45:39,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:39,629 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1222 transitions. [2021-12-17 16:45:39,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1222 transitions. [2021-12-17 16:45:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:39,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:39,630 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:39,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-17 16:45:39,630 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:39,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash -557790964, now seen corresponding path program 1 times [2021-12-17 16:45:39,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:39,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184339168] [2021-12-17 16:45:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:39,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:39,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:39,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184339168] [2021-12-17 16:45:39,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184339168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:39,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:39,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:39,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347583090] [2021-12-17 16:45:39,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:39,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:39,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:39,721 INFO L87 Difference]: Start difference. First operand 917 states and 1222 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:41,040 INFO L93 Difference]: Finished difference Result 1920 states and 2642 transitions. [2021-12-17 16:45:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:41,040 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:41,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:41,042 INFO L225 Difference]: With dead ends: 1920 [2021-12-17 16:45:41,042 INFO L226 Difference]: Without dead ends: 1710 [2021-12-17 16:45:41,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:41,043 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 3803 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3803 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:41,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3803 Valid, 3123 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:45:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2021-12-17 16:45:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 917. [2021-12-17 16:45:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 1.3631284916201116) internal successors, (1220), 916 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1220 transitions. [2021-12-17 16:45:41,153 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1220 transitions. Word has length 97 [2021-12-17 16:45:41,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:41,154 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1220 transitions. [2021-12-17 16:45:41,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:41,154 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1220 transitions. [2021-12-17 16:45:41,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:41,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:41,158 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:41,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-17 16:45:41,158 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash 934856710, now seen corresponding path program 1 times [2021-12-17 16:45:41,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:41,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141967269] [2021-12-17 16:45:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:41,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:41,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:41,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141967269] [2021-12-17 16:45:41,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141967269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:41,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:41,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:41,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685401810] [2021-12-17 16:45:41,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:41,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:41,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:41,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:41,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:41,270 INFO L87 Difference]: Start difference. First operand 917 states and 1220 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:42,677 INFO L93 Difference]: Finished difference Result 1776 states and 2436 transitions. [2021-12-17 16:45:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:42,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:42,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:42,679 INFO L225 Difference]: With dead ends: 1776 [2021-12-17 16:45:42,679 INFO L226 Difference]: Without dead ends: 1630 [2021-12-17 16:45:42,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:42,680 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 3595 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:42,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3595 Valid, 3252 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-12-17 16:45:42,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 917. [2021-12-17 16:45:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 1.3608938547486034) internal successors, (1218), 916 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:42,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1218 transitions. [2021-12-17 16:45:42,810 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1218 transitions. Word has length 97 [2021-12-17 16:45:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:42,810 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1218 transitions. [2021-12-17 16:45:42,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:42,811 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1218 transitions. [2021-12-17 16:45:42,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:42,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:42,812 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:42,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-17 16:45:42,812 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:42,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash -965955861, now seen corresponding path program 1 times [2021-12-17 16:45:42,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:42,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869314508] [2021-12-17 16:45:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:42,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:42,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:42,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869314508] [2021-12-17 16:45:42,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869314508] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:42,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:42,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:42,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118528443] [2021-12-17 16:45:42,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:42,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:42,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:42,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:42,975 INFO L87 Difference]: Start difference. First operand 917 states and 1218 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:45,389 INFO L93 Difference]: Finished difference Result 2504 states and 3506 transitions. [2021-12-17 16:45:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:45,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:45,392 INFO L225 Difference]: With dead ends: 2504 [2021-12-17 16:45:45,392 INFO L226 Difference]: Without dead ends: 2354 [2021-12-17 16:45:45,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:45,393 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 6869 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6869 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 3257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:45,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6869 Valid, 2835 Invalid, 3257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 16:45:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-12-17 16:45:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 925. [2021-12-17 16:45:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 903 states have (on average 1.3576965669988925) internal successors, (1226), 924 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1226 transitions. [2021-12-17 16:45:45,541 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1226 transitions. Word has length 97 [2021-12-17 16:45:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:45,541 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1226 transitions. [2021-12-17 16:45:45,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1226 transitions. [2021-12-17 16:45:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:45,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:45,542 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:45,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-17 16:45:45,542 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1614649937, now seen corresponding path program 1 times [2021-12-17 16:45:45,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:45,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245950135] [2021-12-17 16:45:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:45,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:45,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:45,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245950135] [2021-12-17 16:45:45,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245950135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:45,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:45,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:45,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143812293] [2021-12-17 16:45:45,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:45,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:45,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:45,652 INFO L87 Difference]: Start difference. First operand 925 states and 1226 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:47,071 INFO L93 Difference]: Finished difference Result 1780 states and 2436 transitions. [2021-12-17 16:45:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:47,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:47,073 INFO L225 Difference]: With dead ends: 1780 [2021-12-17 16:45:47,073 INFO L226 Difference]: Without dead ends: 1630 [2021-12-17 16:45:47,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:47,074 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 3692 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3692 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:47,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3692 Valid, 3033 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:45:47,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-12-17 16:45:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 925. [2021-12-17 16:45:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 903 states have (on average 1.3554817275747508) internal successors, (1224), 924 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1224 transitions. [2021-12-17 16:45:47,191 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1224 transitions. Word has length 97 [2021-12-17 16:45:47,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:47,191 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1224 transitions. [2021-12-17 16:45:47,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1224 transitions. [2021-12-17 16:45:47,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:47,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:47,193 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:47,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-17 16:45:47,193 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1414714454, now seen corresponding path program 1 times [2021-12-17 16:45:47,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:47,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048957650] [2021-12-17 16:45:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:47,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:47,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:47,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048957650] [2021-12-17 16:45:47,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048957650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:47,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:47,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:47,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919932168] [2021-12-17 16:45:47,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:47,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:47,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:47,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:47,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:47,352 INFO L87 Difference]: Start difference. First operand 925 states and 1224 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:49,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:49,886 INFO L93 Difference]: Finished difference Result 2360 states and 3282 transitions. [2021-12-17 16:45:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:49,886 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:49,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:49,889 INFO L225 Difference]: With dead ends: 2360 [2021-12-17 16:45:49,889 INFO L226 Difference]: Without dead ends: 2355 [2021-12-17 16:45:49,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:49,893 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 6880 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6880 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:49,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6880 Valid, 2832 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 16:45:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-12-17 16:45:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 933. [2021-12-17 16:45:50,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 911 states have (on average 1.3523600439077936) internal successors, (1232), 932 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1232 transitions. [2021-12-17 16:45:50,022 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1232 transitions. Word has length 97 [2021-12-17 16:45:50,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:50,023 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1232 transitions. [2021-12-17 16:45:50,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1232 transitions. [2021-12-17 16:45:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:50,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:50,024 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:50,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-17 16:45:50,024 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:50,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash 610975350, now seen corresponding path program 1 times [2021-12-17 16:45:50,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:50,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893864229] [2021-12-17 16:45:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:50,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:50,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:50,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893864229] [2021-12-17 16:45:50,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893864229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:50,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:50,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:50,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949811729] [2021-12-17 16:45:50,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:50,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:50,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:50,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:50,129 INFO L87 Difference]: Start difference. First operand 933 states and 1232 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:51,533 INFO L93 Difference]: Finished difference Result 1635 states and 2212 transitions. [2021-12-17 16:45:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:51,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:51,536 INFO L225 Difference]: With dead ends: 1635 [2021-12-17 16:45:51,536 INFO L226 Difference]: Without dead ends: 1630 [2021-12-17 16:45:51,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:51,536 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 3694 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3694 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:51,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3694 Valid, 3018 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:45:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-12-17 16:45:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 933. [2021-12-17 16:45:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 911 states have (on average 1.3501646542261252) internal successors, (1230), 932 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1230 transitions. [2021-12-17 16:45:51,661 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1230 transitions. Word has length 97 [2021-12-17 16:45:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:51,661 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1230 transitions. [2021-12-17 16:45:51,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1230 transitions. [2021-12-17 16:45:51,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:51,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:51,662 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:51,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-17 16:45:51,663 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1771794844, now seen corresponding path program 1 times [2021-12-17 16:45:51,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:51,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519496013] [2021-12-17 16:45:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:51,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:51,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:51,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519496013] [2021-12-17 16:45:51,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519496013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:51,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:51,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:51,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396994131] [2021-12-17 16:45:51,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:51,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:51,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:51,821 INFO L87 Difference]: Start difference. First operand 933 states and 1230 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:54,628 INFO L93 Difference]: Finished difference Result 2616 states and 3647 transitions. [2021-12-17 16:45:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:54,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:54,631 INFO L225 Difference]: With dead ends: 2616 [2021-12-17 16:45:54,631 INFO L226 Difference]: Without dead ends: 2599 [2021-12-17 16:45:54,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:54,632 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 5593 mSDsluCounter, 3390 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 3821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:54,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5593 Valid, 4179 Invalid, 3821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 16:45:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2021-12-17 16:45:54,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 941. [2021-12-17 16:45:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 919 states have (on average 1.3471164309031556) internal successors, (1238), 940 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1238 transitions. [2021-12-17 16:45:54,761 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1238 transitions. Word has length 97 [2021-12-17 16:45:54,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:54,762 INFO L470 AbstractCegarLoop]: Abstraction has 941 states and 1238 transitions. [2021-12-17 16:45:54,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1238 transitions. [2021-12-17 16:45:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:54,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:54,763 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:54,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-17 16:45:54,763 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:54,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1121558854, now seen corresponding path program 1 times [2021-12-17 16:45:54,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:54,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750308048] [2021-12-17 16:45:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:54,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:54,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:54,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750308048] [2021-12-17 16:45:54,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750308048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:54,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:54,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:54,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635520255] [2021-12-17 16:45:54,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:54,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:54,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:54,872 INFO L87 Difference]: Start difference. First operand 941 states and 1238 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:56,336 INFO L93 Difference]: Finished difference Result 1788 states and 2438 transitions. [2021-12-17 16:45:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:45:56,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:56,339 INFO L225 Difference]: With dead ends: 1788 [2021-12-17 16:45:56,339 INFO L226 Difference]: Without dead ends: 1638 [2021-12-17 16:45:56,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:45:56,340 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 3688 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3688 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:56,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3688 Valid, 3021 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:45:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-12-17 16:45:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 941. [2021-12-17 16:45:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 919 states have (on average 1.3449401523394995) internal successors, (1236), 940 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:56,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1236 transitions. [2021-12-17 16:45:56,492 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1236 transitions. Word has length 97 [2021-12-17 16:45:56,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:56,492 INFO L470 AbstractCegarLoop]: Abstraction has 941 states and 1236 transitions. [2021-12-17 16:45:56,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1236 transitions. [2021-12-17 16:45:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:56,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:56,493 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:56,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-17 16:45:56,494 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:56,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash -144161225, now seen corresponding path program 1 times [2021-12-17 16:45:56,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:56,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842008372] [2021-12-17 16:45:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:56,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:56,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:56,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842008372] [2021-12-17 16:45:56,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842008372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:56,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:56,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:45:56,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578292195] [2021-12-17 16:45:56,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:56,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:45:56,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:45:56,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:45:56,650 INFO L87 Difference]: Start difference. First operand 941 states and 1236 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:45:59,090 INFO L93 Difference]: Finished difference Result 2368 states and 3284 transitions. [2021-12-17 16:45:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:45:59,091 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:45:59,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:45:59,094 INFO L225 Difference]: With dead ends: 2368 [2021-12-17 16:45:59,094 INFO L226 Difference]: Without dead ends: 2363 [2021-12-17 16:45:59,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:45:59,095 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 5803 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5803 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:45:59,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5803 Valid, 2823 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 16:45:59,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-12-17 16:45:59,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 949. [2021-12-17 16:45:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 927 states have (on average 1.3419633225458467) internal successors, (1244), 948 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1244 transitions. [2021-12-17 16:45:59,250 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1244 transitions. Word has length 97 [2021-12-17 16:45:59,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:45:59,250 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1244 transitions. [2021-12-17 16:45:59,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:45:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1244 transitions. [2021-12-17 16:45:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:45:59,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:45:59,251 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:45:59,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-17 16:45:59,251 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:45:59,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:45:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash -941278081, now seen corresponding path program 1 times [2021-12-17 16:45:59,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:45:59,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437258651] [2021-12-17 16:45:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:45:59,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:45:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:45:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:45:59,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:45:59,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437258651] [2021-12-17 16:45:59,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437258651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:45:59,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:45:59,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:45:59,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533812159] [2021-12-17 16:45:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:45:59,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:45:59,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:45:59,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:45:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:45:59,356 INFO L87 Difference]: Start difference. First operand 949 states and 1244 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:00,918 INFO L93 Difference]: Finished difference Result 1786 states and 2432 transitions. [2021-12-17 16:46:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:00,921 INFO L225 Difference]: With dead ends: 1786 [2021-12-17 16:46:00,921 INFO L226 Difference]: Without dead ends: 1638 [2021-12-17 16:46:00,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:00,922 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 3591 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:00,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 3223 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:46:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-12-17 16:46:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 949. [2021-12-17 16:46:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 927 states have (on average 1.3408845738942827) internal successors, (1243), 948 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1243 transitions. [2021-12-17 16:46:01,059 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1243 transitions. Word has length 97 [2021-12-17 16:46:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:01,059 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1243 transitions. [2021-12-17 16:46:01,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1243 transitions. [2021-12-17 16:46:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:01,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:01,061 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:01,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-17 16:46:01,061 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:01,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2088565929, now seen corresponding path program 1 times [2021-12-17 16:46:01,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:01,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92705968] [2021-12-17 16:46:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:01,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:01,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:01,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92705968] [2021-12-17 16:46:01,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92705968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:01,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:01,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:46:01,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673696850] [2021-12-17 16:46:01,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:01,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:46:01,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:46:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:46:01,236 INFO L87 Difference]: Start difference. First operand 949 states and 1243 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:03,947 INFO L93 Difference]: Finished difference Result 2514 states and 3503 transitions. [2021-12-17 16:46:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:46:03,948 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:03,950 INFO L225 Difference]: With dead ends: 2514 [2021-12-17 16:46:03,950 INFO L226 Difference]: Without dead ends: 2363 [2021-12-17 16:46:03,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:46:03,951 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 5006 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 3086 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5006 SdHoareTripleChecker+Valid, 3691 SdHoareTripleChecker+Invalid, 3849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 3086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:03,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5006 Valid, 3691 Invalid, 3849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 3086 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 16:46:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-12-17 16:46:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 953. [2021-12-17 16:46:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 931 states have (on average 1.339419978517723) internal successors, (1247), 952 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1247 transitions. [2021-12-17 16:46:04,120 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1247 transitions. Word has length 97 [2021-12-17 16:46:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:04,120 INFO L470 AbstractCegarLoop]: Abstraction has 953 states and 1247 transitions. [2021-12-17 16:46:04,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1247 transitions. [2021-12-17 16:46:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:04,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:04,122 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:04,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-17 16:46:04,122 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:04,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash -292584005, now seen corresponding path program 1 times [2021-12-17 16:46:04,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:04,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836581022] [2021-12-17 16:46:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:04,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:04,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:04,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836581022] [2021-12-17 16:46:04,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836581022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:04,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:04,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:46:04,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650201666] [2021-12-17 16:46:04,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:04,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:46:04,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:04,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:46:04,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:46:04,278 INFO L87 Difference]: Start difference. First operand 953 states and 1247 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:06,794 INFO L93 Difference]: Finished difference Result 2508 states and 3496 transitions. [2021-12-17 16:46:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:46:06,795 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:06,797 INFO L225 Difference]: With dead ends: 2508 [2021-12-17 16:46:06,797 INFO L226 Difference]: Without dead ends: 2360 [2021-12-17 16:46:06,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:46:06,798 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 6942 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6942 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 946 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:06,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6942 Valid, 2792 Invalid, 3236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [946 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 16:46:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2021-12-17 16:46:06,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 957. [2021-12-17 16:46:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 935 states have (on average 1.3379679144385026) internal successors, (1251), 956 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1251 transitions. [2021-12-17 16:46:06,945 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1251 transitions. Word has length 97 [2021-12-17 16:46:06,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:06,946 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 1251 transitions. [2021-12-17 16:46:06,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1251 transitions. [2021-12-17 16:46:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:06,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:06,947 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:06,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-17 16:46:06,948 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1284826825, now seen corresponding path program 1 times [2021-12-17 16:46:06,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:06,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567333167] [2021-12-17 16:46:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:06,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:07,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:07,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567333167] [2021-12-17 16:46:07,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567333167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:07,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:07,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:07,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127085315] [2021-12-17 16:46:07,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:07,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:07,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:07,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:07,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:07,043 INFO L87 Difference]: Start difference. First operand 957 states and 1251 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:08,499 INFO L93 Difference]: Finished difference Result 1789 states and 2432 transitions. [2021-12-17 16:46:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:08,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:08,501 INFO L225 Difference]: With dead ends: 1789 [2021-12-17 16:46:08,501 INFO L226 Difference]: Without dead ends: 1638 [2021-12-17 16:46:08,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:08,503 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 3694 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3694 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:08,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3694 Valid, 2985 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:46:08,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-12-17 16:46:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 957. [2021-12-17 16:46:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 935 states have (on average 1.3368983957219251) internal successors, (1250), 956 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1250 transitions. [2021-12-17 16:46:08,669 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1250 transitions. Word has length 97 [2021-12-17 16:46:08,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:08,669 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 1250 transitions. [2021-12-17 16:46:08,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:08,669 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1250 transitions. [2021-12-17 16:46:08,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:08,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:08,670 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:08,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-17 16:46:08,670 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1097943369, now seen corresponding path program 1 times [2021-12-17 16:46:08,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:08,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370788948] [2021-12-17 16:46:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:08,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:08,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:08,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370788948] [2021-12-17 16:46:08,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370788948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:08,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:08,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:46:08,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757811422] [2021-12-17 16:46:08,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:08,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:46:08,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:08,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:46:08,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:46:08,837 INFO L87 Difference]: Start difference. First operand 957 states and 1250 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:11,621 INFO L93 Difference]: Finished difference Result 2782 states and 3881 transitions. [2021-12-17 16:46:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:46:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:11,624 INFO L225 Difference]: With dead ends: 2782 [2021-12-17 16:46:11,624 INFO L226 Difference]: Without dead ends: 2619 [2021-12-17 16:46:11,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:46:11,625 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 6799 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6799 SdHoareTripleChecker+Valid, 3798 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:11,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6799 Valid, 3798 Invalid, 3614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 16:46:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2021-12-17 16:46:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 961. [2021-12-17 16:46:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 939 states have (on average 1.3354632587859425) internal successors, (1254), 960 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1254 transitions. [2021-12-17 16:46:11,780 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1254 transitions. Word has length 97 [2021-12-17 16:46:11,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:11,780 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1254 transitions. [2021-12-17 16:46:11,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1254 transitions. [2021-12-17 16:46:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:11,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:11,782 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:11,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-17 16:46:11,782 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:11,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:11,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1794930710, now seen corresponding path program 1 times [2021-12-17 16:46:11,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:11,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14421728] [2021-12-17 16:46:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:11,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:11,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:11,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14421728] [2021-12-17 16:46:11,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14421728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:11,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:11,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:11,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636648068] [2021-12-17 16:46:11,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:11,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:11,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:11,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:11,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:11,882 INFO L87 Difference]: Start difference. First operand 961 states and 1254 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:13,421 INFO L93 Difference]: Finished difference Result 1790 states and 2432 transitions. [2021-12-17 16:46:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:13,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:13,423 INFO L225 Difference]: With dead ends: 1790 [2021-12-17 16:46:13,424 INFO L226 Difference]: Without dead ends: 1642 [2021-12-17 16:46:13,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:13,424 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 3594 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3594 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:13,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3594 Valid, 3187 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2475 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:46:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-12-17 16:46:13,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 961. [2021-12-17 16:46:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 939 states have (on average 1.334398296059638) internal successors, (1253), 960 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1253 transitions. [2021-12-17 16:46:13,590 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1253 transitions. Word has length 97 [2021-12-17 16:46:13,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:13,590 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1253 transitions. [2021-12-17 16:46:13,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:13,590 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1253 transitions. [2021-12-17 16:46:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:13,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:13,592 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:13,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-17 16:46:13,592 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:13,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:13,593 INFO L85 PathProgramCache]: Analyzing trace with hash 529690250, now seen corresponding path program 1 times [2021-12-17 16:46:13,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:13,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911423154] [2021-12-17 16:46:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:13,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:13,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:13,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911423154] [2021-12-17 16:46:13,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911423154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:13,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:13,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:46:13,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770011366] [2021-12-17 16:46:13,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:13,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:46:13,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:13,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:46:13,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:46:13,753 INFO L87 Difference]: Start difference. First operand 961 states and 1253 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:16,506 INFO L93 Difference]: Finished difference Result 2518 states and 3503 transitions. [2021-12-17 16:46:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:46:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:16,509 INFO L225 Difference]: With dead ends: 2518 [2021-12-17 16:46:16,509 INFO L226 Difference]: Without dead ends: 2367 [2021-12-17 16:46:16,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:46:16,510 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 6870 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6870 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:16,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6870 Valid, 3405 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [948 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 16:46:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-12-17 16:46:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 965. [2021-12-17 16:46:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 943 states have (on average 1.3329798515376459) internal successors, (1257), 964 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1257 transitions. [2021-12-17 16:46:16,671 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1257 transitions. Word has length 97 [2021-12-17 16:46:16,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:16,672 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1257 transitions. [2021-12-17 16:46:16,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:16,672 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1257 transitions. [2021-12-17 16:46:16,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:16,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:16,673 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:16,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-17 16:46:16,674 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:16,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:16,674 INFO L85 PathProgramCache]: Analyzing trace with hash 67880146, now seen corresponding path program 1 times [2021-12-17 16:46:16,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:16,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53425559] [2021-12-17 16:46:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:16,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:16,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:16,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53425559] [2021-12-17 16:46:16,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53425559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:16,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:16,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:16,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479576678] [2021-12-17 16:46:16,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:16,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:16,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:16,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:16,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:16,776 INFO L87 Difference]: Start difference. First operand 965 states and 1257 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:18,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:18,312 INFO L93 Difference]: Finished difference Result 1788 states and 2428 transitions. [2021-12-17 16:46:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:18,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:18,314 INFO L225 Difference]: With dead ends: 1788 [2021-12-17 16:46:18,314 INFO L226 Difference]: Without dead ends: 1642 [2021-12-17 16:46:18,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:18,315 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 3578 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3578 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:18,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3578 Valid, 3236 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:46:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-12-17 16:46:18,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 965. [2021-12-17 16:46:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 943 states have (on average 1.3319194061505832) internal successors, (1256), 964 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1256 transitions. [2021-12-17 16:46:18,494 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1256 transitions. Word has length 97 [2021-12-17 16:46:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:18,494 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1256 transitions. [2021-12-17 16:46:18,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:18,494 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1256 transitions. [2021-12-17 16:46:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:18,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:18,495 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:18,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-17 16:46:18,495 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash 387783958, now seen corresponding path program 1 times [2021-12-17 16:46:18,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:18,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615601881] [2021-12-17 16:46:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:18,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:18,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:18,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615601881] [2021-12-17 16:46:18,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615601881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:18,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:18,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:46:18,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818059453] [2021-12-17 16:46:18,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:18,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:46:18,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:18,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:46:18,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:46:18,645 INFO L87 Difference]: Start difference. First operand 965 states and 1256 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:21,439 INFO L93 Difference]: Finished difference Result 2512 states and 3495 transitions. [2021-12-17 16:46:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:46:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:21,442 INFO L225 Difference]: With dead ends: 2512 [2021-12-17 16:46:21,442 INFO L226 Difference]: Without dead ends: 2364 [2021-12-17 16:46:21,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:46:21,443 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 4969 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 3808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:21,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4969 Valid, 3699 Invalid, 3808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [769 Valid, 3039 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 16:46:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2021-12-17 16:46:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 969. [2021-12-17 16:46:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 947 states have (on average 1.33051742344245) internal successors, (1260), 968 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1260 transitions. [2021-12-17 16:46:21,617 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1260 transitions. Word has length 97 [2021-12-17 16:46:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:21,617 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1260 transitions. [2021-12-17 16:46:21,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1260 transitions. [2021-12-17 16:46:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:21,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:21,619 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:21,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-17 16:46:21,619 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2055269860, now seen corresponding path program 1 times [2021-12-17 16:46:21,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:21,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595923122] [2021-12-17 16:46:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:21,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:21,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:21,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595923122] [2021-12-17 16:46:21,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595923122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:21,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:21,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:46:21,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315218958] [2021-12-17 16:46:21,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:21,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:46:21,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:21,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:46:21,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:46:21,768 INFO L87 Difference]: Start difference. First operand 969 states and 1260 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:24,422 INFO L93 Difference]: Finished difference Result 2508 states and 3490 transitions. [2021-12-17 16:46:24,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:46:24,422 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:24,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:24,425 INFO L225 Difference]: With dead ends: 2508 [2021-12-17 16:46:24,425 INFO L226 Difference]: Without dead ends: 2362 [2021-12-17 16:46:24,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:46:24,425 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 6955 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 953 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6955 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 953 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:24,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6955 Valid, 2773 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [953 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 16:46:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2021-12-17 16:46:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 973. [2021-12-17 16:46:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 951 states have (on average 1.3291272344900105) internal successors, (1264), 972 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1264 transitions. [2021-12-17 16:46:24,591 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1264 transitions. Word has length 97 [2021-12-17 16:46:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:24,591 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1264 transitions. [2021-12-17 16:46:24,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1264 transitions. [2021-12-17 16:46:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:24,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:24,593 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:24,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-17 16:46:24,593 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:24,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1434790026, now seen corresponding path program 1 times [2021-12-17 16:46:24,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:24,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712845461] [2021-12-17 16:46:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:24,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:24,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:24,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712845461] [2021-12-17 16:46:24,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712845461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:24,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:24,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:24,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002855500] [2021-12-17 16:46:24,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:24,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:24,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:24,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:24,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:24,686 INFO L87 Difference]: Start difference. First operand 973 states and 1264 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:26,261 INFO L93 Difference]: Finished difference Result 1790 states and 2427 transitions. [2021-12-17 16:46:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:26,263 INFO L225 Difference]: With dead ends: 1790 [2021-12-17 16:46:26,263 INFO L226 Difference]: Without dead ends: 1642 [2021-12-17 16:46:26,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:26,264 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 3589 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3589 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:26,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3589 Valid, 3187 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:46:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-12-17 16:46:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 973. [2021-12-17 16:46:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 951 states have (on average 1.3280757097791798) internal successors, (1263), 972 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1263 transitions. [2021-12-17 16:46:26,455 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1263 transitions. Word has length 97 [2021-12-17 16:46:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:26,456 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1263 transitions. [2021-12-17 16:46:26,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1263 transitions. [2021-12-17 16:46:26,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:26,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:26,457 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:26,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-17 16:46:26,457 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:26,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:26,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1595270458, now seen corresponding path program 1 times [2021-12-17 16:46:26,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:26,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493474645] [2021-12-17 16:46:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:26,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:26,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:26,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493474645] [2021-12-17 16:46:26,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493474645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:26,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:26,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:46:26,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528970657] [2021-12-17 16:46:26,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:26,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:46:26,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:26,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:46:26,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:46:26,616 INFO L87 Difference]: Start difference. First operand 973 states and 1263 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:29,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:29,494 INFO L93 Difference]: Finished difference Result 2372 states and 3276 transitions. [2021-12-17 16:46:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:46:29,495 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:29,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:29,497 INFO L225 Difference]: With dead ends: 2372 [2021-12-17 16:46:29,497 INFO L226 Difference]: Without dead ends: 2367 [2021-12-17 16:46:29,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:46:29,498 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 5026 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 3017 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5026 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 3017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:29,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5026 Valid, 3649 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [773 Valid, 3017 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 16:46:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-12-17 16:46:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 977. [2021-12-17 16:46:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 955 states have (on average 1.3267015706806282) internal successors, (1267), 976 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1267 transitions. [2021-12-17 16:46:29,668 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1267 transitions. Word has length 97 [2021-12-17 16:46:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:29,668 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1267 transitions. [2021-12-17 16:46:29,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1267 transitions. [2021-12-17 16:46:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:29,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:29,670 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:29,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-17 16:46:29,670 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:29,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash -786095950, now seen corresponding path program 1 times [2021-12-17 16:46:29,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:29,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829508238] [2021-12-17 16:46:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:29,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:29,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829508238] [2021-12-17 16:46:29,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829508238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:29,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:29,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:46:29,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272910472] [2021-12-17 16:46:29,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:29,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:46:29,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:29,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:46:29,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:46:29,824 INFO L87 Difference]: Start difference. First operand 977 states and 1267 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:32,864 INFO L93 Difference]: Finished difference Result 2512 states and 3491 transitions. [2021-12-17 16:46:32,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:46:32,865 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:32,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:32,867 INFO L225 Difference]: With dead ends: 2512 [2021-12-17 16:46:32,867 INFO L226 Difference]: Without dead ends: 2364 [2021-12-17 16:46:32,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:46:32,868 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 6886 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6886 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 3702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:32,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6886 Valid, 3369 Invalid, 3702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 16:46:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2021-12-17 16:46:33,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 981. [2021-12-17 16:46:33,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 959 states have (on average 1.3253388946819604) internal successors, (1271), 980 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1271 transitions. [2021-12-17 16:46:33,056 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1271 transitions. Word has length 97 [2021-12-17 16:46:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:33,057 INFO L470 AbstractCegarLoop]: Abstraction has 981 states and 1271 transitions. [2021-12-17 16:46:33,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1271 transitions. [2021-12-17 16:46:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:46:33,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:33,058 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:33,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-17 16:46:33,058 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:33,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1852246538, now seen corresponding path program 1 times [2021-12-17 16:46:33,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:33,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282961113] [2021-12-17 16:46:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:33,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:33,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:33,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282961113] [2021-12-17 16:46:33,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282961113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:33,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:33,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:33,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650993548] [2021-12-17 16:46:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:33,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:33,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:33,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:33,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:33,167 INFO L87 Difference]: Start difference. First operand 981 states and 1271 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:34,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:34,734 INFO L93 Difference]: Finished difference Result 1788 states and 2422 transitions. [2021-12-17 16:46:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:34,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:46:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:34,741 INFO L225 Difference]: With dead ends: 1788 [2021-12-17 16:46:34,741 INFO L226 Difference]: Without dead ends: 1642 [2021-12-17 16:46:34,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:34,742 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 3687 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3687 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:34,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3687 Valid, 2950 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:46:34,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-12-17 16:46:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 981. [2021-12-17 16:46:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 959 states have (on average 1.32429614181439) internal successors, (1270), 980 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1270 transitions. [2021-12-17 16:46:34,936 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1270 transitions. Word has length 97 [2021-12-17 16:46:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:34,937 INFO L470 AbstractCegarLoop]: Abstraction has 981 states and 1270 transitions. [2021-12-17 16:46:34,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:34,937 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1270 transitions. [2021-12-17 16:46:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:34,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:34,938 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:34,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-17 16:46:34,939 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:34,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1391256008, now seen corresponding path program 1 times [2021-12-17 16:46:34,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:34,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963642877] [2021-12-17 16:46:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:34,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:35,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:35,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963642877] [2021-12-17 16:46:35,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963642877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:35,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:35,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:35,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287984579] [2021-12-17 16:46:35,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:35,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:35,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:35,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:35,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:35,032 INFO L87 Difference]: Start difference. First operand 981 states and 1270 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:36,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:36,421 INFO L93 Difference]: Finished difference Result 1796 states and 2430 transitions. [2021-12-17 16:46:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:36,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:36,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:36,424 INFO L225 Difference]: With dead ends: 1796 [2021-12-17 16:46:36,424 INFO L226 Difference]: Without dead ends: 1642 [2021-12-17 16:46:36,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:36,425 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 3242 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3242 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:36,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3242 Valid, 2506 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:46:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-12-17 16:46:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 973. [2021-12-17 16:46:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 951 states have (on average 1.3249211356466877) internal successors, (1260), 972 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1260 transitions. [2021-12-17 16:46:36,621 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1260 transitions. Word has length 98 [2021-12-17 16:46:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:36,621 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1260 transitions. [2021-12-17 16:46:36,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1260 transitions. [2021-12-17 16:46:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:36,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:36,623 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:36,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-17 16:46:36,624 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2004213255, now seen corresponding path program 1 times [2021-12-17 16:46:36,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:36,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420081679] [2021-12-17 16:46:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:36,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:36,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:36,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420081679] [2021-12-17 16:46:36,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420081679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:36,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:36,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:36,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802694897] [2021-12-17 16:46:36,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:36,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:36,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:36,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:36,711 INFO L87 Difference]: Start difference. First operand 973 states and 1260 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:38,179 INFO L93 Difference]: Finished difference Result 1912 states and 2580 transitions. [2021-12-17 16:46:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:38,179 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:38,181 INFO L225 Difference]: With dead ends: 1912 [2021-12-17 16:46:38,181 INFO L226 Difference]: Without dead ends: 1742 [2021-12-17 16:46:38,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:38,182 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 2897 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2897 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:38,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2897 Valid, 2970 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:46:38,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-12-17 16:46:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 965. [2021-12-17 16:46:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 943 states have (on average 1.325556733828208) internal successors, (1250), 964 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1250 transitions. [2021-12-17 16:46:38,361 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1250 transitions. Word has length 98 [2021-12-17 16:46:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:38,361 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1250 transitions. [2021-12-17 16:46:38,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1250 transitions. [2021-12-17 16:46:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:38,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:38,362 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:38,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-17 16:46:38,363 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:38,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:38,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1538428317, now seen corresponding path program 1 times [2021-12-17 16:46:38,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:38,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743132200] [2021-12-17 16:46:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:38,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:38,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:38,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743132200] [2021-12-17 16:46:38,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743132200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:38,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:38,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:38,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553309585] [2021-12-17 16:46:38,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:38,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:38,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:38,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:38,456 INFO L87 Difference]: Start difference. First operand 965 states and 1250 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:39,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:39,962 INFO L93 Difference]: Finished difference Result 1784 states and 2413 transitions. [2021-12-17 16:46:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:39,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:39,965 INFO L225 Difference]: With dead ends: 1784 [2021-12-17 16:46:39,965 INFO L226 Difference]: Without dead ends: 1634 [2021-12-17 16:46:39,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:39,965 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 2462 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:39,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2462 Valid, 2609 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:46:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-12-17 16:46:40,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 957. [2021-12-17 16:46:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 935 states have (on average 1.3262032085561497) internal successors, (1240), 956 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1240 transitions. [2021-12-17 16:46:40,160 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1240 transitions. Word has length 98 [2021-12-17 16:46:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:40,160 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 1240 transitions. [2021-12-17 16:46:40,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1240 transitions. [2021-12-17 16:46:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:40,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:40,161 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:40,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-17 16:46:40,161 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:40,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash 640307679, now seen corresponding path program 1 times [2021-12-17 16:46:40,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:40,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161080621] [2021-12-17 16:46:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:40,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:40,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:40,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161080621] [2021-12-17 16:46:40,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161080621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:40,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:40,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:40,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424957829] [2021-12-17 16:46:40,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:40,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:40,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:40,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:40,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:40,241 INFO L87 Difference]: Start difference. First operand 957 states and 1240 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:41,671 INFO L93 Difference]: Finished difference Result 1639 states and 2191 transitions. [2021-12-17 16:46:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:41,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:41,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:41,674 INFO L225 Difference]: With dead ends: 1639 [2021-12-17 16:46:41,674 INFO L226 Difference]: Without dead ends: 1634 [2021-12-17 16:46:41,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:41,674 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 2985 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2985 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:41,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2985 Valid, 2627 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:46:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-12-17 16:46:41,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 949. [2021-12-17 16:46:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 927 states have (on average 1.3268608414239482) internal successors, (1230), 948 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:41,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1230 transitions. [2021-12-17 16:46:41,850 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1230 transitions. Word has length 98 [2021-12-17 16:46:41,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:41,851 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1230 transitions. [2021-12-17 16:46:41,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:41,851 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1230 transitions. [2021-12-17 16:46:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:41,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:41,852 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:41,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-17 16:46:41,852 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash -440198232, now seen corresponding path program 1 times [2021-12-17 16:46:41,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:41,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880523601] [2021-12-17 16:46:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:41,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:41,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:41,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880523601] [2021-12-17 16:46:41,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880523601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:41,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:41,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:41,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801191000] [2021-12-17 16:46:41,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:41,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:41,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:41,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:41,940 INFO L87 Difference]: Start difference. First operand 949 states and 1230 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:43,384 INFO L93 Difference]: Finished difference Result 1639 states and 2189 transitions. [2021-12-17 16:46:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:43,386 INFO L225 Difference]: With dead ends: 1639 [2021-12-17 16:46:43,386 INFO L226 Difference]: Without dead ends: 1634 [2021-12-17 16:46:43,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:43,387 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 2974 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:43,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2974 Valid, 2639 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:46:43,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-12-17 16:46:43,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 941. [2021-12-17 16:46:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 919 states have (on average 1.3275299238302503) internal successors, (1220), 940 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1220 transitions. [2021-12-17 16:46:43,575 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1220 transitions. Word has length 98 [2021-12-17 16:46:43,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:43,576 INFO L470 AbstractCegarLoop]: Abstraction has 941 states and 1220 transitions. [2021-12-17 16:46:43,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1220 transitions. [2021-12-17 16:46:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:43,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:43,577 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:43,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-12-17 16:46:43,577 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1339696265, now seen corresponding path program 1 times [2021-12-17 16:46:43,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:43,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896513153] [2021-12-17 16:46:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:43,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:43,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:43,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896513153] [2021-12-17 16:46:43,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896513153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:43,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:43,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:43,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938321772] [2021-12-17 16:46:43,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:43,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:43,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:43,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:43,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:43,658 INFO L87 Difference]: Start difference. First operand 941 states and 1220 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:45,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:45,170 INFO L93 Difference]: Finished difference Result 1727 states and 2306 transitions. [2021-12-17 16:46:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:45,173 INFO L225 Difference]: With dead ends: 1727 [2021-12-17 16:46:45,173 INFO L226 Difference]: Without dead ends: 1710 [2021-12-17 16:46:45,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:45,173 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 2658 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:45,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2658 Valid, 3208 Invalid, 2475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:46:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2021-12-17 16:46:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 933. [2021-12-17 16:46:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 911 states have (on average 1.3282107574094402) internal successors, (1210), 932 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1210 transitions. [2021-12-17 16:46:45,350 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1210 transitions. Word has length 98 [2021-12-17 16:46:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:45,350 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1210 transitions. [2021-12-17 16:46:45,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1210 transitions. [2021-12-17 16:46:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:45,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:45,351 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:45,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-12-17 16:46:45,351 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:45,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:45,352 INFO L85 PathProgramCache]: Analyzing trace with hash 54867407, now seen corresponding path program 1 times [2021-12-17 16:46:45,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:45,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519393373] [2021-12-17 16:46:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:45,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:45,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:45,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519393373] [2021-12-17 16:46:45,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519393373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:45,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:45,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:45,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205989688] [2021-12-17 16:46:45,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:45,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:45,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:45,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:45,447 INFO L87 Difference]: Start difference. First operand 933 states and 1210 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:46,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:46,933 INFO L93 Difference]: Finished difference Result 1777 states and 2398 transitions. [2021-12-17 16:46:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:46,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:46,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:46,935 INFO L225 Difference]: With dead ends: 1777 [2021-12-17 16:46:46,935 INFO L226 Difference]: Without dead ends: 1626 [2021-12-17 16:46:46,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:46,936 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 2031 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:46,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2031 Valid, 2701 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:46:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-12-17 16:46:47,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 929. [2021-12-17 16:46:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 907 states have (on average 1.328555678059537) internal successors, (1205), 928 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1205 transitions. [2021-12-17 16:46:47,112 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1205 transitions. Word has length 98 [2021-12-17 16:46:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:47,112 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 1205 transitions. [2021-12-17 16:46:47,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1205 transitions. [2021-12-17 16:46:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:47,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:47,115 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:47,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-12-17 16:46:47,115 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash 952508426, now seen corresponding path program 1 times [2021-12-17 16:46:47,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:47,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276368901] [2021-12-17 16:46:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:47,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:47,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:47,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276368901] [2021-12-17 16:46:47,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276368901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:47,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:47,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:47,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677035962] [2021-12-17 16:46:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:47,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:47,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:47,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:47,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:47,192 INFO L87 Difference]: Start difference. First operand 929 states and 1205 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:48,660 INFO L93 Difference]: Finished difference Result 1774 states and 2394 transitions. [2021-12-17 16:46:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:48,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:48,662 INFO L225 Difference]: With dead ends: 1774 [2021-12-17 16:46:48,662 INFO L226 Difference]: Without dead ends: 1626 [2021-12-17 16:46:48,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:48,662 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 3806 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3806 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:48,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3806 Valid, 2704 Invalid, 2267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:46:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-12-17 16:46:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 925. [2021-12-17 16:46:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 903 states have (on average 1.3289036544850499) internal successors, (1200), 924 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1200 transitions. [2021-12-17 16:46:48,843 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1200 transitions. Word has length 98 [2021-12-17 16:46:48,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:48,843 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1200 transitions. [2021-12-17 16:46:48,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:48,843 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1200 transitions. [2021-12-17 16:46:48,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:48,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:48,844 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:48,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-12-17 16:46:48,844 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:48,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash -785107352, now seen corresponding path program 1 times [2021-12-17 16:46:48,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:48,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192922842] [2021-12-17 16:46:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:48,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:48,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:48,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192922842] [2021-12-17 16:46:48,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192922842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:48,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:48,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:48,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932214520] [2021-12-17 16:46:48,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:48,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:48,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:48,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:48,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:48,962 INFO L87 Difference]: Start difference. First operand 925 states and 1200 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:50,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:50,535 INFO L93 Difference]: Finished difference Result 1772 states and 2391 transitions. [2021-12-17 16:46:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:50,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:50,537 INFO L225 Difference]: With dead ends: 1772 [2021-12-17 16:46:50,537 INFO L226 Difference]: Without dead ends: 1626 [2021-12-17 16:46:50,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:50,538 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 3590 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 3114 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:50,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3590 Valid, 3114 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:46:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-12-17 16:46:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 925. [2021-12-17 16:46:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 903 states have (on average 1.327796234772979) internal successors, (1199), 924 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1199 transitions. [2021-12-17 16:46:50,713 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1199 transitions. Word has length 98 [2021-12-17 16:46:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:50,713 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1199 transitions. [2021-12-17 16:46:50,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1199 transitions. [2021-12-17 16:46:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:50,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:50,715 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:50,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-12-17 16:46:50,715 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:50,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:50,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1025638504, now seen corresponding path program 1 times [2021-12-17 16:46:50,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:50,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494615126] [2021-12-17 16:46:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:50,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:50,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:50,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494615126] [2021-12-17 16:46:50,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494615126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:50,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:50,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:50,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528671101] [2021-12-17 16:46:50,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:50,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:50,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:50,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:50,798 INFO L87 Difference]: Start difference. First operand 925 states and 1199 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:52,283 INFO L93 Difference]: Finished difference Result 1777 states and 2395 transitions. [2021-12-17 16:46:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:52,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:52,285 INFO L225 Difference]: With dead ends: 1777 [2021-12-17 16:46:52,285 INFO L226 Difference]: Without dead ends: 1626 [2021-12-17 16:46:52,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:52,286 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 3786 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3786 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:52,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3786 Valid, 2721 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:46:52,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-12-17 16:46:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 921. [2021-12-17 16:46:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 899 states have (on average 1.328142380422692) internal successors, (1194), 920 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1194 transitions. [2021-12-17 16:46:52,473 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1194 transitions. Word has length 98 [2021-12-17 16:46:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:52,473 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1194 transitions. [2021-12-17 16:46:52,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1194 transitions. [2021-12-17 16:46:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:52,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:52,474 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:52,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-12-17 16:46:52,474 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:52,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:52,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1925136537, now seen corresponding path program 1 times [2021-12-17 16:46:52,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:52,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131902497] [2021-12-17 16:46:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:52,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:52,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:52,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131902497] [2021-12-17 16:46:52,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131902497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:52,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:52,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:52,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887740345] [2021-12-17 16:46:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:52,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:52,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:52,550 INFO L87 Difference]: Start difference. First operand 921 states and 1194 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:54,059 INFO L93 Difference]: Finished difference Result 1857 states and 2504 transitions. [2021-12-17 16:46:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:54,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:54,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:54,061 INFO L225 Difference]: With dead ends: 1857 [2021-12-17 16:46:54,061 INFO L226 Difference]: Without dead ends: 1694 [2021-12-17 16:46:54,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:54,062 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 2601 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 3272 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:54,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2601 Valid, 3272 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:46:54,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-12-17 16:46:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 917. [2021-12-17 16:46:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 1.3284916201117318) internal successors, (1189), 916 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1189 transitions. [2021-12-17 16:46:54,238 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1189 transitions. Word has length 98 [2021-12-17 16:46:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:54,238 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1189 transitions. [2021-12-17 16:46:54,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1189 transitions. [2021-12-17 16:46:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:54,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:54,239 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:54,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-12-17 16:46:54,240 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash 578552337, now seen corresponding path program 1 times [2021-12-17 16:46:54,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:54,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331951542] [2021-12-17 16:46:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:54,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:54,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:54,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331951542] [2021-12-17 16:46:54,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331951542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:54,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:54,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:54,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907944975] [2021-12-17 16:46:54,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:54,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:54,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:54,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:54,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:54,329 INFO L87 Difference]: Start difference. First operand 917 states and 1189 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:55,801 INFO L93 Difference]: Finished difference Result 1770 states and 2386 transitions. [2021-12-17 16:46:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:55,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:55,803 INFO L225 Difference]: With dead ends: 1770 [2021-12-17 16:46:55,803 INFO L226 Difference]: Without dead ends: 1622 [2021-12-17 16:46:55,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:55,804 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 2849 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2849 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:55,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2849 Valid, 2785 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:46:55,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-12-17 16:46:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 913. [2021-12-17 16:46:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 891 states have (on average 1.3288439955106621) internal successors, (1184), 912 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1184 transitions. [2021-12-17 16:46:55,997 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1184 transitions. Word has length 98 [2021-12-17 16:46:55,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:55,997 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1184 transitions. [2021-12-17 16:46:55,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1184 transitions. [2021-12-17 16:46:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:55,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:55,998 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:55,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-12-17 16:46:55,998 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1897114906, now seen corresponding path program 1 times [2021-12-17 16:46:55,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:55,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424968295] [2021-12-17 16:46:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:56,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:56,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:56,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424968295] [2021-12-17 16:46:56,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424968295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:56,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:56,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:56,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232884742] [2021-12-17 16:46:56,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:56,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:56,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:56,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:56,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:56,083 INFO L87 Difference]: Start difference. First operand 913 states and 1184 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:57,664 INFO L93 Difference]: Finished difference Result 1769 states and 2384 transitions. [2021-12-17 16:46:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:57,667 INFO L225 Difference]: With dead ends: 1769 [2021-12-17 16:46:57,667 INFO L226 Difference]: Without dead ends: 1622 [2021-12-17 16:46:57,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:57,667 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 3552 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3552 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:57,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3552 Valid, 3186 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:46:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-12-17 16:46:57,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 913. [2021-12-17 16:46:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 891 states have (on average 1.3277216610549945) internal successors, (1183), 912 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1183 transitions. [2021-12-17 16:46:57,852 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1183 transitions. Word has length 98 [2021-12-17 16:46:57,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:57,853 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1183 transitions. [2021-12-17 16:46:57,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1183 transitions. [2021-12-17 16:46:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:57,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:57,854 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:57,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-12-17 16:46:57,855 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:57,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:57,855 INFO L85 PathProgramCache]: Analyzing trace with hash 997428961, now seen corresponding path program 1 times [2021-12-17 16:46:57,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:57,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134470547] [2021-12-17 16:46:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:57,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:57,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:57,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134470547] [2021-12-17 16:46:57,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134470547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:57,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:57,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:57,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170730217] [2021-12-17 16:46:57,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:57,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:57,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:57,929 INFO L87 Difference]: Start difference. First operand 913 states and 1183 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:46:59,395 INFO L93 Difference]: Finished difference Result 1768 states and 2382 transitions. [2021-12-17 16:46:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:46:59,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:46:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:46:59,397 INFO L225 Difference]: With dead ends: 1768 [2021-12-17 16:46:59,397 INFO L226 Difference]: Without dead ends: 1622 [2021-12-17 16:46:59,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:46:59,397 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1983 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:46:59,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 2778 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:46:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-12-17 16:46:59,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 909. [2021-12-17 16:46:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 887 states have (on average 1.3280721533258173) internal successors, (1178), 908 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1178 transitions. [2021-12-17 16:46:59,578 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1178 transitions. Word has length 98 [2021-12-17 16:46:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:46:59,578 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1178 transitions. [2021-12-17 16:46:59,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:46:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1178 transitions. [2021-12-17 16:46:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:46:59,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:46:59,579 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:46:59,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-12-17 16:46:59,580 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:46:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:46:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1942577208, now seen corresponding path program 1 times [2021-12-17 16:46:59,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:46:59,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619365462] [2021-12-17 16:46:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:46:59,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:46:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:46:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:46:59,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:46:59,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619365462] [2021-12-17 16:46:59,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619365462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:46:59,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:46:59,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:46:59,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585378217] [2021-12-17 16:46:59,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:46:59,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:46:59,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:46:59,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:46:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:46:59,650 INFO L87 Difference]: Start difference. First operand 909 states and 1178 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:01,128 INFO L93 Difference]: Finished difference Result 1627 states and 2165 transitions. [2021-12-17 16:47:01,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:47:01,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:47:01,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:01,130 INFO L225 Difference]: With dead ends: 1627 [2021-12-17 16:47:01,130 INFO L226 Difference]: Without dead ends: 1622 [2021-12-17 16:47:01,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:47:01,131 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 1981 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:01,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1981 Valid, 2791 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:47:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-12-17 16:47:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 905. [2021-12-17 16:47:01,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 883 states have (on average 1.3284258210645528) internal successors, (1173), 904 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1173 transitions. [2021-12-17 16:47:01,321 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1173 transitions. Word has length 98 [2021-12-17 16:47:01,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:01,321 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1173 transitions. [2021-12-17 16:47:01,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:01,321 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1173 transitions. [2021-12-17 16:47:01,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:47:01,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:01,323 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:01,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-12-17 16:47:01,323 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:01,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1454965543, now seen corresponding path program 1 times [2021-12-17 16:47:01,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:01,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593179158] [2021-12-17 16:47:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:01,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:01,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:01,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593179158] [2021-12-17 16:47:01,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593179158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:01,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:01,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:47:01,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649024187] [2021-12-17 16:47:01,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:01,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:47:01,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:47:01,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:47:01,398 INFO L87 Difference]: Start difference. First operand 905 states and 1173 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:02,909 INFO L93 Difference]: Finished difference Result 1770 states and 2382 transitions. [2021-12-17 16:47:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:47:02,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:47:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:02,911 INFO L225 Difference]: With dead ends: 1770 [2021-12-17 16:47:02,911 INFO L226 Difference]: Without dead ends: 1622 [2021-12-17 16:47:02,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:47:02,912 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 3679 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3679 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:02,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3679 Valid, 2801 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:47:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-12-17 16:47:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 901. [2021-12-17 16:47:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.328782707622298) internal successors, (1168), 900 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1168 transitions. [2021-12-17 16:47:03,096 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1168 transitions. Word has length 98 [2021-12-17 16:47:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:03,096 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1168 transitions. [2021-12-17 16:47:03,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1168 transitions. [2021-12-17 16:47:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:47:03,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:03,098 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:03,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-12-17 16:47:03,098 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:03,098 INFO L85 PathProgramCache]: Analyzing trace with hash -472216631, now seen corresponding path program 1 times [2021-12-17 16:47:03,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:03,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249946310] [2021-12-17 16:47:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:03,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:03,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:03,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249946310] [2021-12-17 16:47:03,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249946310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:03,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:03,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:47:03,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771902233] [2021-12-17 16:47:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:03,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:47:03,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:47:03,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:47:03,395 INFO L87 Difference]: Start difference. First operand 901 states and 1168 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:05,953 INFO L93 Difference]: Finished difference Result 3204 states and 4407 transitions. [2021-12-17 16:47:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:47:05,957 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:47:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:05,960 INFO L225 Difference]: With dead ends: 3204 [2021-12-17 16:47:05,960 INFO L226 Difference]: Without dead ends: 3012 [2021-12-17 16:47:05,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-12-17 16:47:05,961 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 4821 mSDsluCounter, 10769 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 12475 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:05,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4821 Valid, 12475 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:47:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2021-12-17 16:47:06,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 855. [2021-12-17 16:47:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.3273381294964028) internal successors, (1107), 854 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1107 transitions. [2021-12-17 16:47:06,159 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1107 transitions. Word has length 99 [2021-12-17 16:47:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:06,159 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1107 transitions. [2021-12-17 16:47:06,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:06,159 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1107 transitions. [2021-12-17 16:47:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:47:06,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:06,161 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:06,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-12-17 16:47:06,161 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:06,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1755253690, now seen corresponding path program 1 times [2021-12-17 16:47:06,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:06,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499044837] [2021-12-17 16:47:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:06,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:06,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:06,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499044837] [2021-12-17 16:47:06,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499044837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:06,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:06,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-17 16:47:06,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828118615] [2021-12-17 16:47:06,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:06,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-17 16:47:06,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-17 16:47:06,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-17 16:47:06,638 INFO L87 Difference]: Start difference. First operand 855 states and 1107 transitions. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:09,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:09,239 INFO L93 Difference]: Finished difference Result 2471 states and 3355 transitions. [2021-12-17 16:47:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 16:47:09,239 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:47:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:09,241 INFO L225 Difference]: With dead ends: 2471 [2021-12-17 16:47:09,241 INFO L226 Difference]: Without dead ends: 2267 [2021-12-17 16:47:09,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2021-12-17 16:47:09,242 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 5566 mSDsluCounter, 11901 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5566 SdHoareTripleChecker+Valid, 13442 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:09,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5566 Valid, 13442 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 16:47:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2021-12-17 16:47:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 855. [2021-12-17 16:47:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.3249400479616307) internal successors, (1105), 854 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1105 transitions. [2021-12-17 16:47:09,447 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1105 transitions. Word has length 99 [2021-12-17 16:47:09,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:09,447 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1105 transitions. [2021-12-17 16:47:09,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1105 transitions. [2021-12-17 16:47:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:47:09,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:09,448 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:09,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-12-17 16:47:09,448 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash 134385077, now seen corresponding path program 1 times [2021-12-17 16:47:09,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444833275] [2021-12-17 16:47:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:09,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:10,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:10,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444833275] [2021-12-17 16:47:10,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444833275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:10,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:10,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-12-17 16:47:10,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736986907] [2021-12-17 16:47:10,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:10,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-17 16:47:10,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:10,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-17 16:47:10,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:47:10,674 INFO L87 Difference]: Start difference. First operand 855 states and 1105 transitions. Second operand has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:19,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:19,643 INFO L93 Difference]: Finished difference Result 2167 states and 2839 transitions. [2021-12-17 16:47:19,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-17 16:47:19,643 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:47:19,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:19,645 INFO L225 Difference]: With dead ends: 2167 [2021-12-17 16:47:19,645 INFO L226 Difference]: Without dead ends: 2017 [2021-12-17 16:47:19,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=605, Invalid=3427, Unknown=0, NotChecked=0, Total=4032 [2021-12-17 16:47:19,646 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 5664 mSDsluCounter, 21116 mSDsCounter, 0 mSdLazyCounter, 12460 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5664 SdHoareTripleChecker+Valid, 22696 SdHoareTripleChecker+Invalid, 12583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 12460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:19,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5664 Valid, 22696 Invalid, 12583 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 12460 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-12-17 16:47:19,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2021-12-17 16:47:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 875. [2021-12-17 16:47:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 854 states have (on average 1.325526932084309) internal successors, (1132), 874 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1132 transitions. [2021-12-17 16:47:19,902 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1132 transitions. Word has length 99 [2021-12-17 16:47:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:19,903 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1132 transitions. [2021-12-17 16:47:19,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1132 transitions. [2021-12-17 16:47:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:47:19,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:19,904 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:19,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-12-17 16:47:19,905 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:19,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1796136237, now seen corresponding path program 1 times [2021-12-17 16:47:19,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:19,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988431279] [2021-12-17 16:47:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:19,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:20,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:20,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988431279] [2021-12-17 16:47:20,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988431279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:20,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:20,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:47:20,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372281650] [2021-12-17 16:47:20,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:20,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:47:20,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:47:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:47:20,195 INFO L87 Difference]: Start difference. First operand 875 states and 1132 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:22,726 INFO L93 Difference]: Finished difference Result 3066 states and 4229 transitions. [2021-12-17 16:47:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 16:47:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:47:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:22,729 INFO L225 Difference]: With dead ends: 3066 [2021-12-17 16:47:22,729 INFO L226 Difference]: Without dead ends: 2866 [2021-12-17 16:47:22,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:47:22,730 INFO L933 BasicCegarLoop]: 1596 mSDtfsCounter, 5105 mSDsluCounter, 9203 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5105 SdHoareTripleChecker+Valid, 10799 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:22,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5105 Valid, 10799 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:47:22,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-12-17 16:47:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 821. [2021-12-17 16:47:22,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 803 states have (on average 1.3212951432129514) internal successors, (1061), 820 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1061 transitions. [2021-12-17 16:47:22,958 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1061 transitions. Word has length 99 [2021-12-17 16:47:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:22,958 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1061 transitions. [2021-12-17 16:47:22,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1061 transitions. [2021-12-17 16:47:22,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:47:22,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:22,959 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:22,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-12-17 16:47:22,960 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:22,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:22,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1243357058, now seen corresponding path program 1 times [2021-12-17 16:47:22,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:22,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260612043] [2021-12-17 16:47:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:22,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:23,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:23,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260612043] [2021-12-17 16:47:23,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260612043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:23,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:23,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:47:23,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72962698] [2021-12-17 16:47:23,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:23,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:47:23,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:47:23,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:47:23,252 INFO L87 Difference]: Start difference. First operand 821 states and 1061 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:25,900 INFO L93 Difference]: Finished difference Result 3012 states and 4156 transitions. [2021-12-17 16:47:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:47:25,900 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:47:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:25,903 INFO L225 Difference]: With dead ends: 3012 [2021-12-17 16:47:25,904 INFO L226 Difference]: Without dead ends: 2830 [2021-12-17 16:47:25,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-12-17 16:47:25,904 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 3562 mSDsluCounter, 10787 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3562 SdHoareTripleChecker+Valid, 12346 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:25,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3562 Valid, 12346 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:47:25,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2021-12-17 16:47:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 785. [2021-12-17 16:47:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 767 states have (on average 1.318122555410691) internal successors, (1011), 784 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1011 transitions. [2021-12-17 16:47:26,137 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1011 transitions. Word has length 99 [2021-12-17 16:47:26,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:26,138 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 1011 transitions. [2021-12-17 16:47:26,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:26,138 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1011 transitions. [2021-12-17 16:47:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:47:26,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:26,139 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:26,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-12-17 16:47:26,139 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1918631710, now seen corresponding path program 1 times [2021-12-17 16:47:26,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:26,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378081046] [2021-12-17 16:47:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:26,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:26,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:26,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378081046] [2021-12-17 16:47:26,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378081046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:26,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:26,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:47:26,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523467238] [2021-12-17 16:47:26,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:26,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:47:26,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:47:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:47:26,380 INFO L87 Difference]: Start difference. First operand 785 states and 1011 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:27,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:27,485 INFO L93 Difference]: Finished difference Result 1448 states and 1969 transitions. [2021-12-17 16:47:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:47:27,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:47:27,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:27,486 INFO L225 Difference]: With dead ends: 1448 [2021-12-17 16:47:27,486 INFO L226 Difference]: Without dead ends: 1140 [2021-12-17 16:47:27,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:47:27,487 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 2909 mSDsluCounter, 4296 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2909 SdHoareTripleChecker+Valid, 5147 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:27,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2909 Valid, 5147 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:47:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-17 16:47:27,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 623. [2021-12-17 16:47:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 610 states have (on average 1.3229508196721311) internal successors, (807), 622 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 807 transitions. [2021-12-17 16:47:27,683 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 807 transitions. Word has length 99 [2021-12-17 16:47:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:27,684 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 807 transitions. [2021-12-17 16:47:27,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:27,684 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 807 transitions. [2021-12-17 16:47:27,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:47:27,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:27,685 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:27,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-12-17 16:47:27,685 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:27,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:27,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1407077202, now seen corresponding path program 1 times [2021-12-17 16:47:27,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:27,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036175449] [2021-12-17 16:47:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:27,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:27,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:27,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036175449] [2021-12-17 16:47:27,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036175449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:27,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:27,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 16:47:27,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607614742] [2021-12-17 16:47:27,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:27,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 16:47:27,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 16:47:27,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 16:47:27,877 INFO L87 Difference]: Start difference. First operand 623 states and 807 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:28,783 INFO L93 Difference]: Finished difference Result 1293 states and 1763 transitions. [2021-12-17 16:47:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:47:28,784 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:47:28,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:28,785 INFO L225 Difference]: With dead ends: 1293 [2021-12-17 16:47:28,785 INFO L226 Difference]: Without dead ends: 930 [2021-12-17 16:47:28,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-17 16:47:28,786 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 2426 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:28,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2426 Valid, 1500 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:47:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-12-17 16:47:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 406. [2021-12-17 16:47:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 399 states have (on average 1.3233082706766917) internal successors, (528), 405 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 528 transitions. [2021-12-17 16:47:28,953 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 528 transitions. Word has length 99 [2021-12-17 16:47:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:28,954 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 528 transitions. [2021-12-17 16:47:28,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 528 transitions. [2021-12-17 16:47:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:47:28,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:28,954 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:28,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-12-17 16:47:28,954 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:28,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:28,955 INFO L85 PathProgramCache]: Analyzing trace with hash 669683478, now seen corresponding path program 1 times [2021-12-17 16:47:28,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:28,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615972558] [2021-12-17 16:47:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:28,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:29,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:29,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615972558] [2021-12-17 16:47:29,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615972558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:29,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:29,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 16:47:29,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708857213] [2021-12-17 16:47:29,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:29,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 16:47:29,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 16:47:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-17 16:47:29,309 INFO L87 Difference]: Start difference. First operand 406 states and 528 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:30,705 INFO L93 Difference]: Finished difference Result 972 states and 1320 transitions. [2021-12-17 16:47:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 16:47:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-17 16:47:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:30,706 INFO L225 Difference]: With dead ends: 972 [2021-12-17 16:47:30,706 INFO L226 Difference]: Without dead ends: 822 [2021-12-17 16:47:30,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2021-12-17 16:47:30,707 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1770 mSDsluCounter, 3094 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:30,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1770 Valid, 3462 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:47:30,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-12-17 16:47:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 404. [2021-12-17 16:47:30,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 397 states have (on average 1.3198992443324937) internal successors, (524), 403 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 524 transitions. [2021-12-17 16:47:30,881 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 524 transitions. Word has length 100 [2021-12-17 16:47:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:30,881 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 524 transitions. [2021-12-17 16:47:30,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 524 transitions. [2021-12-17 16:47:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:47:30,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:30,882 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:30,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-12-17 16:47:30,882 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:30,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1110833670, now seen corresponding path program 1 times [2021-12-17 16:47:30,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:30,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894368267] [2021-12-17 16:47:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:30,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:31,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:31,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894368267] [2021-12-17 16:47:31,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894368267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:31,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:31,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:47:31,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661374126] [2021-12-17 16:47:31,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:31,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:47:31,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:31,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:47:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:47:31,080 INFO L87 Difference]: Start difference. First operand 404 states and 524 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:32,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:32,555 INFO L93 Difference]: Finished difference Result 1370 states and 1955 transitions. [2021-12-17 16:47:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:47:32,556 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-17 16:47:32,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:32,557 INFO L225 Difference]: With dead ends: 1370 [2021-12-17 16:47:32,557 INFO L226 Difference]: Without dead ends: 1204 [2021-12-17 16:47:32,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:47:32,558 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1545 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:32,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 3891 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:47:32,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-12-17 16:47:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 384. [2021-12-17 16:47:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 378 states have (on average 1.3148148148148149) internal successors, (497), 383 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 497 transitions. [2021-12-17 16:47:32,728 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 497 transitions. Word has length 100 [2021-12-17 16:47:32,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:32,728 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 497 transitions. [2021-12-17 16:47:32,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 497 transitions. [2021-12-17 16:47:32,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:47:32,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:32,729 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:32,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-12-17 16:47:32,729 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:32,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:32,729 INFO L85 PathProgramCache]: Analyzing trace with hash -927387509, now seen corresponding path program 1 times [2021-12-17 16:47:32,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:32,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782335940] [2021-12-17 16:47:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:32,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:32,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:32,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782335940] [2021-12-17 16:47:32,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782335940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:32,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:32,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:47:32,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879025559] [2021-12-17 16:47:32,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:32,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:47:32,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:32,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:47:32,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:47:32,981 INFO L87 Difference]: Start difference. First operand 384 states and 497 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:35,368 INFO L93 Difference]: Finished difference Result 2328 states and 3364 transitions. [2021-12-17 16:47:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 16:47:35,369 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-17 16:47:35,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:35,371 INFO L225 Difference]: With dead ends: 2328 [2021-12-17 16:47:35,371 INFO L226 Difference]: Without dead ends: 2156 [2021-12-17 16:47:35,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:47:35,371 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 2512 mSDsluCounter, 4398 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 5008 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:35,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2512 Valid, 5008 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:47:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-12-17 16:47:35,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 342. [2021-12-17 16:47:35,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 338 states have (on average 1.301775147928994) internal successors, (440), 341 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 440 transitions. [2021-12-17 16:47:35,545 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 440 transitions. Word has length 100 [2021-12-17 16:47:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:35,546 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 440 transitions. [2021-12-17 16:47:35,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 440 transitions. [2021-12-17 16:47:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:47:35,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:35,546 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:35,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-12-17 16:47:35,546 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:35,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2008689100, now seen corresponding path program 1 times [2021-12-17 16:47:35,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:35,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439109055] [2021-12-17 16:47:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:35,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:35,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:35,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439109055] [2021-12-17 16:47:35,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439109055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:35,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:35,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:47:35,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440832367] [2021-12-17 16:47:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:35,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:47:35,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:47:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:47:35,700 INFO L87 Difference]: Start difference. First operand 342 states and 440 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:38,259 INFO L93 Difference]: Finished difference Result 1918 states and 2755 transitions. [2021-12-17 16:47:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:47:38,260 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-17 16:47:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:38,262 INFO L225 Difference]: With dead ends: 1918 [2021-12-17 16:47:38,262 INFO L226 Difference]: Without dead ends: 1742 [2021-12-17 16:47:38,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:47:38,262 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 3897 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:38,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3897 Valid, 1327 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:47:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-12-17 16:47:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 350. [2021-12-17 16:47:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 346 states have (on average 1.2947976878612717) internal successors, (448), 349 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 448 transitions. [2021-12-17 16:47:38,441 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 448 transitions. Word has length 100 [2021-12-17 16:47:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:38,442 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 448 transitions. [2021-12-17 16:47:38,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 448 transitions. [2021-12-17 16:47:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 16:47:38,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:38,442 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:38,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-12-17 16:47:38,442 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:38,443 INFO L85 PathProgramCache]: Analyzing trace with hash 862448, now seen corresponding path program 1 times [2021-12-17 16:47:38,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:38,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307611293] [2021-12-17 16:47:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:38,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:38,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:38,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307611293] [2021-12-17 16:47:38,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307611293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:38,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:38,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:47:38,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129022491] [2021-12-17 16:47:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:38,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:47:38,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:47:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:47:38,535 INFO L87 Difference]: Start difference. First operand 350 states and 448 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:39,599 INFO L93 Difference]: Finished difference Result 859 states and 1187 transitions. [2021-12-17 16:47:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:47:39,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-12-17 16:47:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:39,601 INFO L225 Difference]: With dead ends: 859 [2021-12-17 16:47:39,601 INFO L226 Difference]: Without dead ends: 852 [2021-12-17 16:47:39,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:47:39,601 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1416 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:39,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 1060 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:47:39,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-12-17 16:47:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 350. [2021-12-17 16:47:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 346 states have (on average 1.2890173410404624) internal successors, (446), 349 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 446 transitions. [2021-12-17 16:47:39,805 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 446 transitions. Word has length 101 [2021-12-17 16:47:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:39,805 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 446 transitions. [2021-12-17 16:47:39,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:39,805 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 446 transitions. [2021-12-17 16:47:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 16:47:39,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:39,805 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:39,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-12-17 16:47:39,806 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:39,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:39,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1982954255, now seen corresponding path program 1 times [2021-12-17 16:47:39,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:39,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564239867] [2021-12-17 16:47:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:39,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:39,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:39,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564239867] [2021-12-17 16:47:39,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564239867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:39,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:39,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:47:39,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616345607] [2021-12-17 16:47:39,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:39,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:47:39,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:39,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:47:39,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:47:39,887 INFO L87 Difference]: Start difference. First operand 350 states and 446 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:40,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:40,924 INFO L93 Difference]: Finished difference Result 1008 states and 1412 transitions. [2021-12-17 16:47:40,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:47:40,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-12-17 16:47:40,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:40,925 INFO L225 Difference]: With dead ends: 1008 [2021-12-17 16:47:40,925 INFO L226 Difference]: Without dead ends: 832 [2021-12-17 16:47:40,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:47:40,926 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 920 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:40,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 1041 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:47:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-12-17 16:47:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 342. [2021-12-17 16:47:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 338 states have (on average 1.2899408284023668) internal successors, (436), 341 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 436 transitions. [2021-12-17 16:47:41,100 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 436 transitions. Word has length 101 [2021-12-17 16:47:41,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:41,100 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 436 transitions. [2021-12-17 16:47:41,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:41,100 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 436 transitions. [2021-12-17 16:47:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 16:47:41,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:41,101 INFO L514 BasicCegarLoop]: 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] [2021-12-17 16:47:41,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-12-17 16:47:41,101 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:41,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:41,101 INFO L85 PathProgramCache]: Analyzing trace with hash -862579509, now seen corresponding path program 1 times [2021-12-17 16:47:41,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:41,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361386323] [2021-12-17 16:47:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:41,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:41,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:41,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361386323] [2021-12-17 16:47:41,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361386323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:41,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:41,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 16:47:41,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693543476] [2021-12-17 16:47:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:41,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 16:47:41,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 16:47:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-17 16:47:41,664 INFO L87 Difference]: Start difference. First operand 342 states and 436 transitions. Second operand has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:44,358 INFO L93 Difference]: Finished difference Result 1538 states and 2142 transitions. [2021-12-17 16:47:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 16:47:44,358 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-12-17 16:47:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:44,360 INFO L225 Difference]: With dead ends: 1538 [2021-12-17 16:47:44,360 INFO L226 Difference]: Without dead ends: 1348 [2021-12-17 16:47:44,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=261, Invalid=1145, Unknown=0, NotChecked=0, Total=1406 [2021-12-17 16:47:44,360 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 2913 mSDsluCounter, 5454 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 5897 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:44,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2913 Valid, 5897 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:47:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-12-17 16:47:44,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 354. [2021-12-17 16:47:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 350 states have (on average 1.2857142857142858) internal successors, (450), 353 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:44,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 450 transitions. [2021-12-17 16:47:44,556 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 450 transitions. Word has length 101 [2021-12-17 16:47:44,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:44,556 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 450 transitions. [2021-12-17 16:47:44,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:44,556 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 450 transitions. [2021-12-17 16:47:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 16:47:44,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:44,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:47:44,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-12-17 16:47:44,556 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:44,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:44,557 INFO L85 PathProgramCache]: Analyzing trace with hash 259521936, now seen corresponding path program 1 times [2021-12-17 16:47:44,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:44,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309278501] [2021-12-17 16:47:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:44,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:45,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:45,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309278501] [2021-12-17 16:47:45,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309278501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:45,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:45,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-12-17 16:47:45,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844148992] [2021-12-17 16:47:45,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:45,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-17 16:47:45,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:45,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-17 16:47:45,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2021-12-17 16:47:45,745 INFO L87 Difference]: Start difference. First operand 354 states and 450 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:49,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:49,839 INFO L93 Difference]: Finished difference Result 1159 states and 1628 transitions. [2021-12-17 16:47:49,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-17 16:47:49,840 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-12-17 16:47:49,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:49,841 INFO L225 Difference]: With dead ends: 1159 [2021-12-17 16:47:49,841 INFO L226 Difference]: Without dead ends: 1153 [2021-12-17 16:47:49,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=597, Invalid=3185, Unknown=0, NotChecked=0, Total=3782 [2021-12-17 16:47:49,842 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1290 mSDsluCounter, 5985 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 6292 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:49,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 6292 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3026 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 16:47:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2021-12-17 16:47:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 370. [2021-12-17 16:47:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 366 states have (on average 1.284153005464481) internal successors, (470), 369 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 470 transitions. [2021-12-17 16:47:50,035 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 470 transitions. Word has length 102 [2021-12-17 16:47:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:50,036 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 470 transitions. [2021-12-17 16:47:50,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 470 transitions. [2021-12-17 16:47:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 16:47:50,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:50,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:47:50,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-12-17 16:47:50,036 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1501784722, now seen corresponding path program 1 times [2021-12-17 16:47:50,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:50,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800288528] [2021-12-17 16:47:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:50,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:50,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:50,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800288528] [2021-12-17 16:47:50,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800288528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:50,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:50,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-12-17 16:47:50,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236723794] [2021-12-17 16:47:50,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:50,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-17 16:47:50,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:50,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-17 16:47:50,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:47:50,748 INFO L87 Difference]: Start difference. First operand 370 states and 470 transitions. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:52,853 INFO L93 Difference]: Finished difference Result 712 states and 967 transitions. [2021-12-17 16:47:52,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 16:47:52,853 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-12-17 16:47:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:52,854 INFO L225 Difference]: With dead ends: 712 [2021-12-17 16:47:52,855 INFO L226 Difference]: Without dead ends: 522 [2021-12-17 16:47:52,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=287, Invalid=1435, Unknown=0, NotChecked=0, Total=1722 [2021-12-17 16:47:52,855 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 819 mSDsluCounter, 4302 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:52,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 4616 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:47:52,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-12-17 16:47:53,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 319. [2021-12-17 16:47:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 317 states have (on average 1.2996845425867507) internal successors, (412), 318 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 412 transitions. [2021-12-17 16:47:53,037 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 412 transitions. Word has length 102 [2021-12-17 16:47:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:53,037 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 412 transitions. [2021-12-17 16:47:53,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 412 transitions. [2021-12-17 16:47:53,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 16:47:53,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:53,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:47:53,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-12-17 16:47:53,038 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1426547450, now seen corresponding path program 1 times [2021-12-17 16:47:53,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:53,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31376169] [2021-12-17 16:47:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:53,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:53,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31376169] [2021-12-17 16:47:53,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31376169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:53,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:53,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:47:53,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329324476] [2021-12-17 16:47:53,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:53,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:47:53,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:53,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:47:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:47:53,305 INFO L87 Difference]: Start difference. First operand 319 states and 412 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 13 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:55,200 INFO L93 Difference]: Finished difference Result 1419 states and 2036 transitions. [2021-12-17 16:47:55,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:47:55,201 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 13 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-17 16:47:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:55,202 INFO L225 Difference]: With dead ends: 1419 [2021-12-17 16:47:55,203 INFO L226 Difference]: Without dead ends: 1413 [2021-12-17 16:47:55,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:47:55,203 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 1694 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:55,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 3713 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:47:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-12-17 16:47:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 292. [2021-12-17 16:47:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.302405498281787) internal successors, (379), 291 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 379 transitions. [2021-12-17 16:47:55,403 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 379 transitions. Word has length 103 [2021-12-17 16:47:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:55,403 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 379 transitions. [2021-12-17 16:47:55,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 13 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 379 transitions. [2021-12-17 16:47:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-17 16:47:55,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:55,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:47:55,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-12-17 16:47:55,404 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1124148050, now seen corresponding path program 1 times [2021-12-17 16:47:55,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:55,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561322638] [2021-12-17 16:47:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:55,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:55,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:55,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561322638] [2021-12-17 16:47:55,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561322638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:55,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:55,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:47:55,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467259123] [2021-12-17 16:47:55,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:55,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:47:55,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:55,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:47:55,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:47:55,476 INFO L87 Difference]: Start difference. First operand 292 states and 379 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:47:57,552 INFO L93 Difference]: Finished difference Result 2044 states and 3019 transitions. [2021-12-17 16:47:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 16:47:57,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-12-17 16:47:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:47:57,554 INFO L225 Difference]: With dead ends: 2044 [2021-12-17 16:47:57,554 INFO L226 Difference]: Without dead ends: 1898 [2021-12-17 16:47:57,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-12-17 16:47:57,555 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 2064 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:47:57,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2064 Valid, 2721 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:47:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-12-17 16:47:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 436. [2021-12-17 16:47:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.3655172413793104) internal successors, (594), 435 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 594 transitions. [2021-12-17 16:47:57,904 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 594 transitions. Word has length 133 [2021-12-17 16:47:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:47:57,905 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 594 transitions. [2021-12-17 16:47:57,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:47:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 594 transitions. [2021-12-17 16:47:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 16:47:57,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:47:57,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:47:57,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-12-17 16:47:57,905 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:47:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:47:57,906 INFO L85 PathProgramCache]: Analyzing trace with hash -423567003, now seen corresponding path program 1 times [2021-12-17 16:47:57,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:47:57,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444581963] [2021-12-17 16:47:57,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:47:57,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:47:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:47:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:47:57,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:47:57,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444581963] [2021-12-17 16:47:57,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444581963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:47:57,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:47:57,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:47:57,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651606661] [2021-12-17 16:47:57,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:47:57,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:47:57,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:47:57,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:47:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:47:57,983 INFO L87 Difference]: Start difference. First operand 436 states and 594 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:00,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:48:00,157 INFO L93 Difference]: Finished difference Result 2322 states and 3420 transitions. [2021-12-17 16:48:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:48:00,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-12-17 16:48:00,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:48:00,160 INFO L225 Difference]: With dead ends: 2322 [2021-12-17 16:48:00,160 INFO L226 Difference]: Without dead ends: 2032 [2021-12-17 16:48:00,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:48:00,160 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1712 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:48:00,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 1562 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:48:00,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2021-12-17 16:48:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 724. [2021-12-17 16:48:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.4190871369294606) internal successors, (1026), 723 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1026 transitions. [2021-12-17 16:48:00,827 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1026 transitions. Word has length 135 [2021-12-17 16:48:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:48:00,827 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1026 transitions. [2021-12-17 16:48:00,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1026 transitions. [2021-12-17 16:48:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 16:48:00,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:48:00,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:48:00,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-12-17 16:48:00,829 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:48:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:48:00,829 INFO L85 PathProgramCache]: Analyzing trace with hash 110372779, now seen corresponding path program 1 times [2021-12-17 16:48:00,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:48:00,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179512678] [2021-12-17 16:48:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:48:00,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:48:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:48:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:48:00,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:48:00,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179512678] [2021-12-17 16:48:00,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179512678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:48:00,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:48:00,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:48:00,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781153275] [2021-12-17 16:48:00,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:48:00,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:48:00,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:48:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:48:00,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:48:00,893 INFO L87 Difference]: Start difference. First operand 724 states and 1026 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:48:03,373 INFO L93 Difference]: Finished difference Result 2610 states and 3852 transitions. [2021-12-17 16:48:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:48:03,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-12-17 16:48:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:48:03,376 INFO L225 Difference]: With dead ends: 2610 [2021-12-17 16:48:03,376 INFO L226 Difference]: Without dead ends: 2320 [2021-12-17 16:48:03,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:48:03,377 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 1834 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:48:03,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1834 Valid, 1402 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:48:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-12-17 16:48:04,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1156. [2021-12-17 16:48:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.4484848484848485) internal successors, (1673), 1155 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1673 transitions. [2021-12-17 16:48:04,500 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1673 transitions. Word has length 135 [2021-12-17 16:48:04,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:48:04,500 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1673 transitions. [2021-12-17 16:48:04,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:04,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1673 transitions. [2021-12-17 16:48:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 16:48:04,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:48:04,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:48:04,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-12-17 16:48:04,501 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:48:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:48:04,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1835758900, now seen corresponding path program 1 times [2021-12-17 16:48:04,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:48:04,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137239215] [2021-12-17 16:48:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:48:04,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:48:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:48:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:48:04,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:48:04,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137239215] [2021-12-17 16:48:04,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137239215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:48:04,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:48:04,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:48:04,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901895865] [2021-12-17 16:48:04,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:48:04,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:48:04,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:48:04,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:48:04,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:48:04,535 INFO L87 Difference]: Start difference. First operand 1156 states and 1673 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:05,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:48:05,671 INFO L93 Difference]: Finished difference Result 2168 states and 3188 transitions. [2021-12-17 16:48:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:48:05,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-12-17 16:48:05,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:48:05,673 INFO L225 Difference]: With dead ends: 2168 [2021-12-17 16:48:05,673 INFO L226 Difference]: Without dead ends: 1158 [2021-12-17 16:48:05,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:48:05,674 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 88 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:48:05,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 375 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:48:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-12-17 16:48:06,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1156. [2021-12-17 16:48:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.4415584415584415) internal successors, (1665), 1155 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1665 transitions. [2021-12-17 16:48:06,876 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1665 transitions. Word has length 135 [2021-12-17 16:48:06,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:48:06,876 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1665 transitions. [2021-12-17 16:48:06,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:06,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1665 transitions. [2021-12-17 16:48:06,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 16:48:06,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:48:06,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:48:06,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-12-17 16:48:06,877 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:48:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:48:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1096018579, now seen corresponding path program 1 times [2021-12-17 16:48:06,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:48:06,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219006591] [2021-12-17 16:48:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:48:06,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:48:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:48:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:48:06,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:48:06,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219006591] [2021-12-17 16:48:06,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219006591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:48:06,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:48:06,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:48:06,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394155920] [2021-12-17 16:48:06,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:48:06,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:48:06,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:48:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:48:06,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:48:06,911 INFO L87 Difference]: Start difference. First operand 1156 states and 1665 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:09,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:48:09,044 INFO L93 Difference]: Finished difference Result 3086 states and 4527 transitions. [2021-12-17 16:48:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:48:09,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-12-17 16:48:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:48:09,047 INFO L225 Difference]: With dead ends: 3086 [2021-12-17 16:48:09,047 INFO L226 Difference]: Without dead ends: 2076 [2021-12-17 16:48:09,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:48:09,048 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 135 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:48:09,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 364 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:48:09,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2021-12-17 16:48:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2060. [2021-12-17 16:48:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 1.4424477901894124) internal successors, (2970), 2059 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2970 transitions. [2021-12-17 16:48:11,212 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2970 transitions. Word has length 135 [2021-12-17 16:48:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:48:11,212 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 2970 transitions. [2021-12-17 16:48:11,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2970 transitions. [2021-12-17 16:48:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 16:48:11,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:48:11,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:48:11,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-12-17 16:48:11,213 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:48:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:48:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash 188573565, now seen corresponding path program 1 times [2021-12-17 16:48:11,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:48:11,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464922879] [2021-12-17 16:48:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:48:11,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:48:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:48:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:48:11,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:48:11,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464922879] [2021-12-17 16:48:11,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464922879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:48:11,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:48:11,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:48:11,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795422219] [2021-12-17 16:48:11,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:48:11,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:48:11,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:48:11,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:48:11,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:48:11,280 INFO L87 Difference]: Start difference. First operand 2060 states and 2970 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:16,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:48:16,483 INFO L93 Difference]: Finished difference Result 5350 states and 7813 transitions. [2021-12-17 16:48:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:48:16,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-12-17 16:48:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:48:16,489 INFO L225 Difference]: With dead ends: 5350 [2021-12-17 16:48:16,489 INFO L226 Difference]: Without dead ends: 4802 [2021-12-17 16:48:16,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:48:16,490 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 1713 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:48:16,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1713 Valid, 1525 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:48:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2021-12-17 16:48:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 2606. [2021-12-17 16:48:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2605 states have (on average 1.4479846449136275) internal successors, (3772), 2605 states have internal predecessors, (3772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3772 transitions. [2021-12-17 16:48:19,313 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3772 transitions. Word has length 135 [2021-12-17 16:48:19,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:48:19,313 INFO L470 AbstractCegarLoop]: Abstraction has 2606 states and 3772 transitions. [2021-12-17 16:48:19,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3772 transitions. [2021-12-17 16:48:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 16:48:19,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:48:19,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:48:19,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-12-17 16:48:19,314 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:48:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:48:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -930846025, now seen corresponding path program 1 times [2021-12-17 16:48:19,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:48:19,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476433779] [2021-12-17 16:48:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:48:19,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:48:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:48:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:48:19,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:48:19,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476433779] [2021-12-17 16:48:19,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476433779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:48:19,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:48:19,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:48:19,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340855231] [2021-12-17 16:48:19,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:48:19,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:48:19,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:48:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:48:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:48:19,395 INFO L87 Difference]: Start difference. First operand 2606 states and 3772 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:48:25,226 INFO L93 Difference]: Finished difference Result 5896 states and 8615 transitions. [2021-12-17 16:48:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:48:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-12-17 16:48:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:48:25,231 INFO L225 Difference]: With dead ends: 5896 [2021-12-17 16:48:25,231 INFO L226 Difference]: Without dead ends: 5348 [2021-12-17 16:48:25,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:48:25,232 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 1538 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:48:25,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1629 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:48:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2021-12-17 16:48:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 3152. [2021-12-17 16:48:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 3151 states have (on average 1.4516026658203744) internal successors, (4574), 3151 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 4574 transitions. [2021-12-17 16:48:28,772 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 4574 transitions. Word has length 135 [2021-12-17 16:48:28,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:48:28,772 INFO L470 AbstractCegarLoop]: Abstraction has 3152 states and 4574 transitions. [2021-12-17 16:48:28,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 4574 transitions. [2021-12-17 16:48:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 16:48:28,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:48:28,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:48:28,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-12-17 16:48:28,773 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:48:28,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:48:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -798272143, now seen corresponding path program 1 times [2021-12-17 16:48:28,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:48:28,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534840924] [2021-12-17 16:48:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:48:28,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:48:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:48:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:48:28,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:48:28,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534840924] [2021-12-17 16:48:28,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534840924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:48:28,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:48:28,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:48:28,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174485948] [2021-12-17 16:48:28,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:48:28,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:48:28,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:48:28,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:48:28,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:48:28,845 INFO L87 Difference]: Start difference. First operand 3152 states and 4574 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:48:35,205 INFO L93 Difference]: Finished difference Result 6442 states and 9417 transitions. [2021-12-17 16:48:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:48:35,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-12-17 16:48:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:48:35,211 INFO L225 Difference]: With dead ends: 6442 [2021-12-17 16:48:35,212 INFO L226 Difference]: Without dead ends: 5894 [2021-12-17 16:48:35,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:48:35,213 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 1543 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:48:35,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 1740 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:48:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5894 states. [2021-12-17 16:48:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5894 to 3698. [2021-12-17 16:48:39,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3697 states have (on average 1.4541520151474168) internal successors, (5376), 3697 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5376 transitions. [2021-12-17 16:48:39,347 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5376 transitions. Word has length 135 [2021-12-17 16:48:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:48:39,347 INFO L470 AbstractCegarLoop]: Abstraction has 3698 states and 5376 transitions. [2021-12-17 16:48:39,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5376 transitions. [2021-12-17 16:48:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-17 16:48:39,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:48:39,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:48:39,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-12-17 16:48:39,348 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:48:39,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:48:39,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1014783631, now seen corresponding path program 1 times [2021-12-17 16:48:39,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:48:39,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769652622] [2021-12-17 16:48:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:48:39,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:48:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:48:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:48:39,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:48:39,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769652622] [2021-12-17 16:48:39,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769652622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:48:39,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:48:39,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:48:39,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085716452] [2021-12-17 16:48:39,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:48:39,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:48:39,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:48:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:48:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:48:39,393 INFO L87 Difference]: Start difference. First operand 3698 states and 5376 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:48:47,244 INFO L93 Difference]: Finished difference Result 10594 states and 15446 transitions. [2021-12-17 16:48:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:48:47,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-12-17 16:48:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:48:47,253 INFO L225 Difference]: With dead ends: 10594 [2021-12-17 16:48:47,253 INFO L226 Difference]: Without dead ends: 7042 [2021-12-17 16:48:47,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:48:47,255 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 107 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:48:47,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 485 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:48:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7042 states. [2021-12-17 16:48:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7042 to 6832. [2021-12-17 16:48:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6832 states, 6831 states have (on average 1.451617625530669) internal successors, (9916), 6831 states have internal predecessors, (9916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:55,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 9916 transitions. [2021-12-17 16:48:55,129 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 9916 transitions. Word has length 136 [2021-12-17 16:48:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:48:55,129 INFO L470 AbstractCegarLoop]: Abstraction has 6832 states and 9916 transitions. [2021-12-17 16:48:55,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:48:55,129 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 9916 transitions. [2021-12-17 16:48:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-17 16:48:55,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:48:55,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:48:55,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-12-17 16:48:55,131 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:48:55,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:48:55,131 INFO L85 PathProgramCache]: Analyzing trace with hash 577373062, now seen corresponding path program 1 times [2021-12-17 16:48:55,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:48:55,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124907592] [2021-12-17 16:48:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:48:55,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:48:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:48:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:48:55,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:48:55,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124907592] [2021-12-17 16:48:55,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124907592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:48:55,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:48:55,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:48:55,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463597594] [2021-12-17 16:48:55,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:48:55,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:48:55,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:48:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:48:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:48:55,167 INFO L87 Difference]: Start difference. First operand 6832 states and 9916 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:49:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:49:09,873 INFO L93 Difference]: Finished difference Result 19788 states and 28702 transitions. [2021-12-17 16:49:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:49:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-12-17 16:49:09,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:49:09,888 INFO L225 Difference]: With dead ends: 19788 [2021-12-17 16:49:09,888 INFO L226 Difference]: Without dead ends: 13102 [2021-12-17 16:49:09,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:49:09,893 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 100 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:49:09,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 485 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:49:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13102 states. [2021-12-17 16:49:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13102 to 12684. [2021-12-17 16:49:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12684 states, 12683 states have (on average 1.444453205077663) internal successors, (18320), 12683 states have internal predecessors, (18320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:49:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12684 states to 12684 states and 18320 transitions. [2021-12-17 16:49:25,173 INFO L78 Accepts]: Start accepts. Automaton has 12684 states and 18320 transitions. Word has length 137 [2021-12-17 16:49:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:49:25,173 INFO L470 AbstractCegarLoop]: Abstraction has 12684 states and 18320 transitions. [2021-12-17 16:49:25,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:49:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 12684 states and 18320 transitions. [2021-12-17 16:49:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-17 16:49:25,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:49:25,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:49:25,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-12-17 16:49:25,174 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:49:25,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:49:25,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1400739354, now seen corresponding path program 1 times [2021-12-17 16:49:25,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:49:25,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007958039] [2021-12-17 16:49:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:49:25,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:49:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:49:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:49:25,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:49:25,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007958039] [2021-12-17 16:49:25,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007958039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:49:25,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:49:25,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:49:25,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954097059] [2021-12-17 16:49:25,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:49:25,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:49:25,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:49:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:49:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:49:25,210 INFO L87 Difference]: Start difference. First operand 12684 states and 18320 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:49:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:49:53,319 INFO L93 Difference]: Finished difference Result 36928 states and 53186 transitions. [2021-12-17 16:49:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:49:53,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-12-17 16:49:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:49:53,348 INFO L225 Difference]: With dead ends: 36928 [2021-12-17 16:49:53,349 INFO L226 Difference]: Without dead ends: 24390 [2021-12-17 16:49:53,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:49:53,359 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 93 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:49:53,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 485 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:49:53,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24390 states. [2021-12-17 16:50:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24390 to 23556. [2021-12-17 16:50:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23556 states, 23555 states have (on average 1.433920611335173) internal successors, (33776), 23555 states have internal predecessors, (33776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:50:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23556 states to 23556 states and 33776 transitions. [2021-12-17 16:50:21,864 INFO L78 Accepts]: Start accepts. Automaton has 23556 states and 33776 transitions. Word has length 138 [2021-12-17 16:50:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:50:21,865 INFO L470 AbstractCegarLoop]: Abstraction has 23556 states and 33776 transitions. [2021-12-17 16:50:21,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:50:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 23556 states and 33776 transitions. [2021-12-17 16:50:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-17 16:50:21,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:50:21,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:50:21,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-12-17 16:50:21,866 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:50:21,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:50:21,866 INFO L85 PathProgramCache]: Analyzing trace with hash -563563663, now seen corresponding path program 1 times [2021-12-17 16:50:21,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:50:21,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897604175] [2021-12-17 16:50:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:50:21,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:50:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:50:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:50:21,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:50:21,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897604175] [2021-12-17 16:50:21,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897604175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:50:21,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:50:21,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:50:21,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017454622] [2021-12-17 16:50:21,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:50:21,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:50:21,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:50:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:50:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:50:21,908 INFO L87 Difference]: Start difference. First operand 23556 states and 33776 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:51:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:51:15,279 INFO L93 Difference]: Finished difference Result 68712 states and 98098 transitions. [2021-12-17 16:51:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:51:15,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-12-17 16:51:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:51:15,348 INFO L225 Difference]: With dead ends: 68712 [2021-12-17 16:51:15,348 INFO L226 Difference]: Without dead ends: 45302 [2021-12-17 16:51:15,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:51:15,375 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 86 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:51:15,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 485 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:51:15,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45302 states. [2021-12-17 16:52:09,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45302 to 43636. [2021-12-17 16:52:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43636 states, 43635 states have (on average 1.4205110576372177) internal successors, (61984), 43635 states have internal predecessors, (61984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:52:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43636 states to 43636 states and 61984 transitions. [2021-12-17 16:52:09,135 INFO L78 Accepts]: Start accepts. Automaton has 43636 states and 61984 transitions. Word has length 139 [2021-12-17 16:52:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:52:09,136 INFO L470 AbstractCegarLoop]: Abstraction has 43636 states and 61984 transitions. [2021-12-17 16:52:09,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:52:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 43636 states and 61984 transitions. [2021-12-17 16:52:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-17 16:52:09,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:52:09,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:52:09,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-12-17 16:52:09,137 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:52:09,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:52:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1405348517, now seen corresponding path program 1 times [2021-12-17 16:52:09,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:52:09,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47015218] [2021-12-17 16:52:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:52:09,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:52:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:52:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:52:09,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:52:09,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47015218] [2021-12-17 16:52:09,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47015218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:52:09,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:52:09,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:52:09,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875251383] [2021-12-17 16:52:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:52:09,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:52:09,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:52:09,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:52:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:52:09,173 INFO L87 Difference]: Start difference. First operand 43636 states and 61984 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:53:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:53:47,714 INFO L93 Difference]: Finished difference Result 127288 states and 179810 transitions. [2021-12-17 16:53:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:53:47,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-12-17 16:53:47,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:53:47,849 INFO L225 Difference]: With dead ends: 127288 [2021-12-17 16:53:47,850 INFO L226 Difference]: Without dead ends: 83798 [2021-12-17 16:53:47,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:53:47,897 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 76 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:53:47,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 485 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:53:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83798 states. [2021-12-17 16:55:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83798 to 80468. [2021-12-17 16:55:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80468 states, 80467 states have (on average 1.4042029651906993) internal successors, (112992), 80467 states have internal predecessors, (112992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:55:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80468 states to 80468 states and 112992 transitions. [2021-12-17 16:55:28,908 INFO L78 Accepts]: Start accepts. Automaton has 80468 states and 112992 transitions. Word has length 140 [2021-12-17 16:55:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:55:28,908 INFO L470 AbstractCegarLoop]: Abstraction has 80468 states and 112992 transitions. [2021-12-17 16:55:28,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:55:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 80468 states and 112992 transitions. [2021-12-17 16:55:28,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-17 16:55:28,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:55:28,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:55:28,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-12-17 16:55:28,909 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-17 16:55:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:55:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1038829764, now seen corresponding path program 1 times [2021-12-17 16:55:28,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:55:28,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660360861] [2021-12-17 16:55:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:55:28,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:55:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:55:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:55:29,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:55:29,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660360861] [2021-12-17 16:55:29,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660360861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:55:29,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:55:29,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:55:29,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780557199] [2021-12-17 16:55:29,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:55:29,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:55:29,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:55:29,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:55:29,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:55:29,172 INFO L87 Difference]: Start difference. First operand 80468 states and 112992 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15