./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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.4.ufo.UNBOUNDED.pals.c.v+sep-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 5a17c5e6b377f57a67eda09046c4807c6b84e7806fd109e4ef14e9498a7cb447 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:18:16,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:18:16,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:18:16,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:18:16,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:18:16,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:18:16,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:18:16,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:18:16,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:18:16,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:18:16,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:18:16,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:18:16,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:18:16,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:18:16,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:18:16,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:18:16,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:18:16,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:18:16,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:18:16,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:18:16,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:18:16,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:18:16,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:18:16,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:18:17,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:18:17,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:18:17,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:18:17,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:18:17,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:18:17,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:18:17,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:18:17,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:18:17,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:18:17,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:18:17,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:18:17,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:18:17,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:18:17,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:18:17,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:18:17,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:18:17,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:18:17,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:18:17,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:18:17,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:18:17,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:18:17,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:18:17,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:18:17,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:18:17,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:18:17,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:18:17,051 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:18:17,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:18:17,057 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:18:17,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:18:17,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:18:17,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:18:17,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:18:17,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:18:17,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:18:17,058 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:18:17,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:18:17,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:18:17,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:18:17,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:18:17,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:18:17,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:18:17,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:18:17,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:18:17,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:18:17,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:18:17,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:18:17,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:18:17,061 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:18:17,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:18:17,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:18:17,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:18:17,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a17c5e6b377f57a67eda09046c4807c6b84e7806fd109e4ef14e9498a7cb447 [2021-12-14 15:18:17,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:18:17,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:18:17,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:18:17,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:18:17,339 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:18:17,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-14 15:18:17,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d63770005/49bb5ed3319f407eb40830f2864dc0ae/FLAG214c12706 [2021-12-14 15:18:17,978 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:18:17,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-14 15:18:18,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d63770005/49bb5ed3319f407eb40830f2864dc0ae/FLAG214c12706 [2021-12-14 15:18:18,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d63770005/49bb5ed3319f407eb40830f2864dc0ae [2021-12-14 15:18:18,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:18:18,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:18:18,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:18:18,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:18:18,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:18:18,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:18:18" (1/1) ... [2021-12-14 15:18:18,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567f813b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:18, skipping insertion in model container [2021-12-14 15:18:18,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:18:18" (1/1) ... [2021-12-14 15:18:18,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:18:18,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:18:18,740 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16906,16919] [2021-12-14 15:18:18,771 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23310,23323] [2021-12-14 15:18:18,782 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26497,26510] [2021-12-14 15:18:18,792 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29453,29466] [2021-12-14 15:18:18,802 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33216,33229] [2021-12-14 15:18:18,820 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36248,36261] [2021-12-14 15:18:18,828 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39433,39446] [2021-12-14 15:18:18,836 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42384,42397] [2021-12-14 15:18:18,845 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45768,45781] [2021-12-14 15:18:18,853 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48734,48747] [2021-12-14 15:18:18,861 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[51883,51896] [2021-12-14 15:18:18,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:18:18,904 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:18:18,998 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16906,16919] [2021-12-14 15:18:19,018 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23310,23323] [2021-12-14 15:18:19,026 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26497,26510] [2021-12-14 15:18:19,038 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29453,29466] [2021-12-14 15:18:19,045 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33216,33229] [2021-12-14 15:18:19,051 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36248,36261] [2021-12-14 15:18:19,057 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39433,39446] [2021-12-14 15:18:19,063 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42384,42397] [2021-12-14 15:18:19,069 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45768,45781] [2021-12-14 15:18:19,075 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48734,48747] [2021-12-14 15:18:19,081 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[51883,51896] [2021-12-14 15:18:19,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:18:19,110 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:18:19,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19 WrapperNode [2021-12-14 15:18:19,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:18:19,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:18:19,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:18:19,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:18:19,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,229 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2571 [2021-12-14 15:18:19,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:18:19,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:18:19,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:18:19,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:18:19,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:18:19,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:18:19,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:18:19,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:18:19,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (1/1) ... [2021-12-14 15:18:19,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:18:19,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:18:19,372 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) [2021-12-14 15:18:19,396 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 [2021-12-14 15:18:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:18:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:18:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:18:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:18:19,615 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:18:19,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:18:20,788 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:18:20,800 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:18:20,800 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 15:18:20,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:18:20 BoogieIcfgContainer [2021-12-14 15:18:20,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:18:20,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:18:20,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:18:20,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:18:20,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:18:18" (1/3) ... [2021-12-14 15:18:20,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@951fd2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:18:20, skipping insertion in model container [2021-12-14 15:18:20,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:19" (2/3) ... [2021-12-14 15:18:20,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@951fd2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:18:20, skipping insertion in model container [2021-12-14 15:18:20,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:18:20" (3/3) ... [2021-12-14 15:18:20,810 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-14 15:18:20,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:18:20,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-14 15:18:20,860 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:18:20,865 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 [2021-12-14 15:18:20,866 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-14 15:18:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 537 states, 525 states have (on average 1.8304761904761904) internal successors, (961), 536 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-14 15:18:20,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:20,909 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] [2021-12-14 15:18:20,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:20,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 702631990, now seen corresponding path program 1 times [2021-12-14 15:18:20,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:20,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123664880] [2021-12-14 15:18:20,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:20,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:21,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:21,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123664880] [2021-12-14 15:18:21,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123664880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:21,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:21,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:18:21,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92148429] [2021-12-14 15:18:21,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:21,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:18:21,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:21,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:18:21,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:18:21,298 INFO L87 Difference]: Start difference. First operand has 537 states, 525 states have (on average 1.8304761904761904) internal successors, (961), 536 states have internal predecessors, (961), 0 states have call successors, (0), 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 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:21,885 INFO L93 Difference]: Finished difference Result 740 states and 1288 transitions. [2021-12-14 15:18:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:18:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-14 15:18:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:21,901 INFO L225 Difference]: With dead ends: 740 [2021-12-14 15:18:21,902 INFO L226 Difference]: Without dead ends: 470 [2021-12-14 15:18:21,909 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 [2021-12-14 15:18:21,912 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 2316 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:21,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2316 Valid, 518 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:18:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-12-14 15:18:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-12-14 15:18:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 459 states have (on average 1.2962962962962963) internal successors, (595), 469 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 595 transitions. [2021-12-14 15:18:21,974 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 595 transitions. Word has length 59 [2021-12-14 15:18:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:21,974 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 595 transitions. [2021-12-14 15:18:21,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 595 transitions. [2021-12-14 15:18:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-14 15:18:21,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:21,978 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] [2021-12-14 15:18:21,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:18:21,979 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:21,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash 728409025, now seen corresponding path program 1 times [2021-12-14 15:18:21,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:21,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559923034] [2021-12-14 15:18:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:21,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:22,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:22,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559923034] [2021-12-14 15:18:22,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559923034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:22,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:22,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:18:22,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687602096] [2021-12-14 15:18:22,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:22,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:18:22,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:18:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:18:22,126 INFO L87 Difference]: Start difference. First operand 470 states and 595 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:22,362 INFO L93 Difference]: Finished difference Result 600 states and 761 transitions. [2021-12-14 15:18:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:18:22,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-14 15:18:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:22,368 INFO L225 Difference]: With dead ends: 600 [2021-12-14 15:18:22,369 INFO L226 Difference]: Without dead ends: 356 [2021-12-14 15:18:22,371 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 [2021-12-14 15:18:22,373 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1295 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:22,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 243 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:18:22,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-12-14 15:18:22,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2021-12-14 15:18:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 345 states have (on average 1.3101449275362318) internal successors, (452), 355 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 452 transitions. [2021-12-14 15:18:22,409 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 452 transitions. Word has length 59 [2021-12-14 15:18:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:22,410 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 452 transitions. [2021-12-14 15:18:22,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 452 transitions. [2021-12-14 15:18:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-14 15:18:22,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:22,414 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] [2021-12-14 15:18:22,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:18:22,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:22,415 INFO L85 PathProgramCache]: Analyzing trace with hash -466198780, now seen corresponding path program 1 times [2021-12-14 15:18:22,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:22,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864141326] [2021-12-14 15:18:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:22,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:22,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864141326] [2021-12-14 15:18:22,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864141326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:22,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:22,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:18:22,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555152757] [2021-12-14 15:18:22,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:22,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:18:22,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:18:22,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:18:22,498 INFO L87 Difference]: Start difference. First operand 356 states and 452 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:22,687 INFO L93 Difference]: Finished difference Result 506 states and 651 transitions. [2021-12-14 15:18:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:18:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-14 15:18:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:22,689 INFO L225 Difference]: With dead ends: 506 [2021-12-14 15:18:22,690 INFO L226 Difference]: Without dead ends: 312 [2021-12-14 15:18:22,690 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 [2021-12-14 15:18:22,691 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1153 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:22,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 219 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:18:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-14 15:18:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-12-14 15:18:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 301 states have (on average 1.3255813953488371) internal successors, (399), 311 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 399 transitions. [2021-12-14 15:18:22,706 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 399 transitions. Word has length 59 [2021-12-14 15:18:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:22,707 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 399 transitions. [2021-12-14 15:18:22,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 399 transitions. [2021-12-14 15:18:22,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-14 15:18:22,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:22,708 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] [2021-12-14 15:18:22,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:18:22,709 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1447561490, now seen corresponding path program 1 times [2021-12-14 15:18:22,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:22,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698710991] [2021-12-14 15:18:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:22,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:22,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:22,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698710991] [2021-12-14 15:18:22,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698710991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:22,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:22,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:18:22,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107760639] [2021-12-14 15:18:22,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:22,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:18:22,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:22,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:18:22,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:18:22,778 INFO L87 Difference]: Start difference. First operand 312 states and 399 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:22,918 INFO L93 Difference]: Finished difference Result 410 states and 519 transitions. [2021-12-14 15:18:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:18:22,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-12-14 15:18:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:22,920 INFO L225 Difference]: With dead ends: 410 [2021-12-14 15:18:22,920 INFO L226 Difference]: Without dead ends: 245 [2021-12-14 15:18:22,921 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 [2021-12-14 15:18:22,922 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 855 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:22,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 195 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:18:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-12-14 15:18:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-12-14 15:18:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.3205128205128205) internal successors, (309), 244 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 309 transitions. [2021-12-14 15:18:22,934 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 309 transitions. Word has length 60 [2021-12-14 15:18:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:22,935 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 309 transitions. [2021-12-14 15:18:22,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 309 transitions. [2021-12-14 15:18:22,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-14 15:18:22,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:22,936 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] [2021-12-14 15:18:22,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:18:22,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:22,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:22,937 INFO L85 PathProgramCache]: Analyzing trace with hash -944801897, now seen corresponding path program 1 times [2021-12-14 15:18:22,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:22,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502509987] [2021-12-14 15:18:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:22,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:23,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:23,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502509987] [2021-12-14 15:18:23,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502509987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:23,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:23,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:23,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223504143] [2021-12-14 15:18:23,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:23,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:23,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:23,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:23,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:23,091 INFO L87 Difference]: Start difference. First operand 245 states and 309 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:23,694 INFO L93 Difference]: Finished difference Result 553 states and 738 transitions. [2021-12-14 15:18:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:23,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-12-14 15:18:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:23,697 INFO L225 Difference]: With dead ends: 553 [2021-12-14 15:18:23,698 INFO L226 Difference]: Without dead ends: 487 [2021-12-14 15:18:23,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:18:23,699 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1972 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:23,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1972 Valid, 898 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:23,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-14 15:18:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 245. [2021-12-14 15:18:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.3162393162393162) internal successors, (308), 244 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 308 transitions. [2021-12-14 15:18:23,714 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 308 transitions. Word has length 61 [2021-12-14 15:18:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:23,714 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 308 transitions. [2021-12-14 15:18:23,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 308 transitions. [2021-12-14 15:18:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-14 15:18:23,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:23,715 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] [2021-12-14 15:18:23,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:18:23,716 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash 448084895, now seen corresponding path program 1 times [2021-12-14 15:18:23,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:23,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473862938] [2021-12-14 15:18:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:23,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:23,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:23,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473862938] [2021-12-14 15:18:23,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473862938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:23,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:23,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:23,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47044521] [2021-12-14 15:18:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:23,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:23,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:23,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:23,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:23,823 INFO L87 Difference]: Start difference. First operand 245 states and 308 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:24,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:24,373 INFO L93 Difference]: Finished difference Result 579 states and 770 transitions. [2021-12-14 15:18:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:24,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-12-14 15:18:24,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:24,376 INFO L225 Difference]: With dead ends: 579 [2021-12-14 15:18:24,376 INFO L226 Difference]: Without dead ends: 491 [2021-12-14 15:18:24,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:18:24,377 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1559 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:24,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 874 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-14 15:18:24,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 245. [2021-12-14 15:18:24,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.311965811965812) internal successors, (307), 244 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 307 transitions. [2021-12-14 15:18:24,393 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 307 transitions. Word has length 61 [2021-12-14 15:18:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:24,393 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 307 transitions. [2021-12-14 15:18:24,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 307 transitions. [2021-12-14 15:18:24,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-14 15:18:24,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:24,395 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] [2021-12-14 15:18:24,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:18:24,395 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:24,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:24,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1014019097, now seen corresponding path program 1 times [2021-12-14 15:18:24,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:24,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358300956] [2021-12-14 15:18:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:24,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:24,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:24,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358300956] [2021-12-14 15:18:24,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358300956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:24,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:24,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:18:24,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466548445] [2021-12-14 15:18:24,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:24,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:18:24,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:18:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:18:24,528 INFO L87 Difference]: Start difference. First operand 245 states and 307 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:24,861 INFO L93 Difference]: Finished difference Result 484 states and 609 transitions. [2021-12-14 15:18:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:18:24,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-12-14 15:18:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:24,864 INFO L225 Difference]: With dead ends: 484 [2021-12-14 15:18:24,864 INFO L226 Difference]: Without dead ends: 351 [2021-12-14 15:18:24,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-14 15:18:24,866 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 1464 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:24,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 449 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:18:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-12-14 15:18:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 245. [2021-12-14 15:18:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.3076923076923077) internal successors, (306), 244 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 306 transitions. [2021-12-14 15:18:24,882 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 306 transitions. Word has length 61 [2021-12-14 15:18:24,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:24,883 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 306 transitions. [2021-12-14 15:18:24,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 306 transitions. [2021-12-14 15:18:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:18:24,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:24,884 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] [2021-12-14 15:18:24,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:18:24,885 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:24,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:24,886 INFO L85 PathProgramCache]: Analyzing trace with hash -471732578, now seen corresponding path program 1 times [2021-12-14 15:18:24,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:24,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205293638] [2021-12-14 15:18:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:24,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:24,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:24,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205293638] [2021-12-14 15:18:24,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205293638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:24,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:24,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:24,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455331374] [2021-12-14 15:18:24,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:24,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:24,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:24,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:24,989 INFO L87 Difference]: Start difference. First operand 245 states and 306 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:25,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:25,555 INFO L93 Difference]: Finished difference Result 504 states and 659 transitions. [2021-12-14 15:18:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:25,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-14 15:18:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:25,558 INFO L225 Difference]: With dead ends: 504 [2021-12-14 15:18:25,558 INFO L226 Difference]: Without dead ends: 487 [2021-12-14 15:18:25,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:18:25,559 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1363 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:25,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1363 Valid, 1043 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-14 15:18:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 245. [2021-12-14 15:18:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.3034188034188035) internal successors, (305), 244 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 305 transitions. [2021-12-14 15:18:25,578 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 305 transitions. Word has length 63 [2021-12-14 15:18:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:25,578 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 305 transitions. [2021-12-14 15:18:25,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 305 transitions. [2021-12-14 15:18:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:18:25,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:25,579 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] [2021-12-14 15:18:25,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:18:25,580 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash -157878139, now seen corresponding path program 1 times [2021-12-14 15:18:25,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:25,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102207117] [2021-12-14 15:18:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:25,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:25,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:25,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102207117] [2021-12-14 15:18:25,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102207117] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:25,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:25,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:25,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180984120] [2021-12-14 15:18:25,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:25,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:25,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:25,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:25,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:25,700 INFO L87 Difference]: Start difference. First operand 245 states and 305 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:26,314 INFO L93 Difference]: Finished difference Result 484 states and 628 transitions. [2021-12-14 15:18:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:26,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-14 15:18:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:26,317 INFO L225 Difference]: With dead ends: 484 [2021-12-14 15:18:26,317 INFO L226 Difference]: Without dead ends: 479 [2021-12-14 15:18:26,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:18:26,319 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 1223 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:26,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 1168 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-14 15:18:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 245. [2021-12-14 15:18:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.2991452991452992) internal successors, (304), 244 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 304 transitions. [2021-12-14 15:18:26,351 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 304 transitions. Word has length 63 [2021-12-14 15:18:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:26,351 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 304 transitions. [2021-12-14 15:18:26,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 304 transitions. [2021-12-14 15:18:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:18:26,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:26,353 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] [2021-12-14 15:18:26,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:18:26,353 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:26,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:26,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2011079223, now seen corresponding path program 1 times [2021-12-14 15:18:26,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:26,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193543507] [2021-12-14 15:18:26,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:26,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:26,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:26,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193543507] [2021-12-14 15:18:26,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193543507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:26,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:26,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:26,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539301606] [2021-12-14 15:18:26,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:26,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:26,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:26,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:26,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:26,451 INFO L87 Difference]: Start difference. First operand 245 states and 304 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:27,016 INFO L93 Difference]: Finished difference Result 585 states and 769 transitions. [2021-12-14 15:18:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:27,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-14 15:18:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:27,019 INFO L225 Difference]: With dead ends: 585 [2021-12-14 15:18:27,019 INFO L226 Difference]: Without dead ends: 491 [2021-12-14 15:18:27,019 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 [2021-12-14 15:18:27,020 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1400 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:27,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 1168 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:27,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-14 15:18:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 245. [2021-12-14 15:18:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.294871794871795) internal successors, (303), 244 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 303 transitions. [2021-12-14 15:18:27,036 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 303 transitions. Word has length 63 [2021-12-14 15:18:27,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:27,036 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 303 transitions. [2021-12-14 15:18:27,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 303 transitions. [2021-12-14 15:18:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:18:27,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:27,038 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] [2021-12-14 15:18:27,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:18:27,038 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash 556986468, now seen corresponding path program 1 times [2021-12-14 15:18:27,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:27,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745768385] [2021-12-14 15:18:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:27,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:27,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:27,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745768385] [2021-12-14 15:18:27,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745768385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:27,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:27,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:27,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142965595] [2021-12-14 15:18:27,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:27,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:27,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:27,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:27,156 INFO L87 Difference]: Start difference. First operand 245 states and 303 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:27,736 INFO L93 Difference]: Finished difference Result 558 states and 737 transitions. [2021-12-14 15:18:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-14 15:18:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:27,739 INFO L225 Difference]: With dead ends: 558 [2021-12-14 15:18:27,739 INFO L226 Difference]: Without dead ends: 487 [2021-12-14 15:18:27,739 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 [2021-12-14 15:18:27,740 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 901 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:27,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 1219 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-14 15:18:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 245. [2021-12-14 15:18:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 244 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 302 transitions. [2021-12-14 15:18:27,758 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 302 transitions. Word has length 63 [2021-12-14 15:18:27,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:27,758 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 302 transitions. [2021-12-14 15:18:27,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:27,758 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 302 transitions. [2021-12-14 15:18:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:18:27,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:27,759 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] [2021-12-14 15:18:27,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:18:27,760 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash -33472501, now seen corresponding path program 1 times [2021-12-14 15:18:27,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:27,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986057776] [2021-12-14 15:18:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:27,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:27,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:27,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986057776] [2021-12-14 15:18:27,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986057776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:27,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:27,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:27,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115530667] [2021-12-14 15:18:27,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:27,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:27,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:27,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:27,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:27,858 INFO L87 Difference]: Start difference. First operand 245 states and 302 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:28,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:28,450 INFO L93 Difference]: Finished difference Result 538 states and 706 transitions. [2021-12-14 15:18:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:28,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-14 15:18:28,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:28,452 INFO L225 Difference]: With dead ends: 538 [2021-12-14 15:18:28,452 INFO L226 Difference]: Without dead ends: 479 [2021-12-14 15:18:28,453 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 [2021-12-14 15:18:28,453 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1645 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:28,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 1059 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:28,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-14 15:18:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 245. [2021-12-14 15:18:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.2863247863247864) internal successors, (301), 244 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 301 transitions. [2021-12-14 15:18:28,471 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 301 transitions. Word has length 63 [2021-12-14 15:18:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:28,472 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 301 transitions. [2021-12-14 15:18:28,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 301 transitions. [2021-12-14 15:18:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:18:28,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:28,473 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] [2021-12-14 15:18:28,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:18:28,473 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash -653212004, now seen corresponding path program 1 times [2021-12-14 15:18:28,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:28,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950326983] [2021-12-14 15:18:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:28,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:28,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:28,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950326983] [2021-12-14 15:18:28,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950326983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:28,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:28,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:28,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561495690] [2021-12-14 15:18:28,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:28,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:28,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:28,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:28,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:28,569 INFO L87 Difference]: Start difference. First operand 245 states and 301 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:29,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:29,113 INFO L93 Difference]: Finished difference Result 484 states and 624 transitions. [2021-12-14 15:18:29,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:29,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-14 15:18:29,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:29,115 INFO L225 Difference]: With dead ends: 484 [2021-12-14 15:18:29,115 INFO L226 Difference]: Without dead ends: 479 [2021-12-14 15:18:29,115 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 [2021-12-14 15:18:29,116 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 1368 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:29,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1368 Valid, 1196 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-14 15:18:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 245. [2021-12-14 15:18:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.2820512820512822) internal successors, (300), 244 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 300 transitions. [2021-12-14 15:18:29,134 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 300 transitions. Word has length 63 [2021-12-14 15:18:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:29,135 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 300 transitions. [2021-12-14 15:18:29,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 300 transitions. [2021-12-14 15:18:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:18:29,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:29,136 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] [2021-12-14 15:18:29,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:18:29,136 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:29,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:29,137 INFO L85 PathProgramCache]: Analyzing trace with hash 543767036, now seen corresponding path program 1 times [2021-12-14 15:18:29,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:29,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287835920] [2021-12-14 15:18:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:29,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:29,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:29,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287835920] [2021-12-14 15:18:29,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287835920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:29,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:29,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:29,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652867564] [2021-12-14 15:18:29,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:29,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:29,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:29,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:29,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:29,230 INFO L87 Difference]: Start difference. First operand 245 states and 300 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:29,786 INFO L93 Difference]: Finished difference Result 535 states and 700 transitions. [2021-12-14 15:18:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:29,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-14 15:18:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:29,788 INFO L225 Difference]: With dead ends: 535 [2021-12-14 15:18:29,788 INFO L226 Difference]: Without dead ends: 479 [2021-12-14 15:18:29,789 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 [2021-12-14 15:18:29,789 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 1682 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:29,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 1027 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-14 15:18:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 245. [2021-12-14 15:18:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.2777777777777777) internal successors, (299), 244 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 299 transitions. [2021-12-14 15:18:29,808 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 299 transitions. Word has length 63 [2021-12-14 15:18:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:29,809 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 299 transitions. [2021-12-14 15:18:29,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 299 transitions. [2021-12-14 15:18:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 15:18:29,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:29,810 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] [2021-12-14 15:18:29,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:18:29,810 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:29,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:29,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2022048839, now seen corresponding path program 1 times [2021-12-14 15:18:29,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:29,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103683661] [2021-12-14 15:18:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:29,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:30,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:30,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103683661] [2021-12-14 15:18:30,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103683661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:30,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:30,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 15:18:30,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585377850] [2021-12-14 15:18:30,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:30,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 15:18:30,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:30,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 15:18:30,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:18:30,157 INFO L87 Difference]: Start difference. First operand 245 states and 299 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:31,016 INFO L93 Difference]: Finished difference Result 566 states and 695 transitions. [2021-12-14 15:18:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-14 15:18:31,017 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-14 15:18:31,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:31,019 INFO L225 Difference]: With dead ends: 566 [2021-12-14 15:18:31,019 INFO L226 Difference]: Without dead ends: 562 [2021-12-14 15:18:31,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-12-14 15:18:31,020 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 1702 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:31,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 1864 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-12-14 15:18:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 241. [2021-12-14 15:18:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 231 states have (on average 1.277056277056277) internal successors, (295), 240 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 295 transitions. [2021-12-14 15:18:31,044 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 295 transitions. Word has length 65 [2021-12-14 15:18:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:31,045 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 295 transitions. [2021-12-14 15:18:31,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 295 transitions. [2021-12-14 15:18:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 15:18:31,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:31,046 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] [2021-12-14 15:18:31,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 15:18:31,046 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:31,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash 71013216, now seen corresponding path program 1 times [2021-12-14 15:18:31,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:31,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063525649] [2021-12-14 15:18:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:31,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:31,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:31,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063525649] [2021-12-14 15:18:31,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063525649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:31,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:31,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-14 15:18:31,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420466779] [2021-12-14 15:18:31,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:31,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-14 15:18:31,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:31,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-14 15:18:31,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:18:31,553 INFO L87 Difference]: Start difference. First operand 241 states and 295 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:34,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:34,409 INFO L93 Difference]: Finished difference Result 791 states and 1001 transitions. [2021-12-14 15:18:34,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-14 15:18:34,409 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-14 15:18:34,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:34,412 INFO L225 Difference]: With dead ends: 791 [2021-12-14 15:18:34,412 INFO L226 Difference]: Without dead ends: 730 [2021-12-14 15:18:34,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2021-12-14 15:18:34,413 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 1500 mSDsluCounter, 7257 mSDsCounter, 0 mSdLazyCounter, 4167 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 7895 SdHoareTripleChecker+Invalid, 4236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:34,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1500 Valid, 7895 Invalid, 4236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4167 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:18:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2021-12-14 15:18:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 255. [2021-12-14 15:18:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 245 states have (on average 1.2775510204081633) internal successors, (313), 254 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 313 transitions. [2021-12-14 15:18:34,447 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 313 transitions. Word has length 65 [2021-12-14 15:18:34,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:34,448 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 313 transitions. [2021-12-14 15:18:34,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 313 transitions. [2021-12-14 15:18:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 15:18:34,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:34,449 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] [2021-12-14 15:18:34,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 15:18:34,450 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:34,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:34,450 INFO L85 PathProgramCache]: Analyzing trace with hash -907607662, now seen corresponding path program 1 times [2021-12-14 15:18:34,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:34,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285857537] [2021-12-14 15:18:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:34,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:34,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:34,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285857537] [2021-12-14 15:18:34,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285857537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:34,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:34,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 15:18:34,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398652886] [2021-12-14 15:18:34,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:34,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 15:18:34,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:34,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 15:18:34,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:18:34,710 INFO L87 Difference]: Start difference. First operand 255 states and 313 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:35,565 INFO L93 Difference]: Finished difference Result 623 states and 782 transitions. [2021-12-14 15:18:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:18:35,567 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-14 15:18:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:35,570 INFO L225 Difference]: With dead ends: 623 [2021-12-14 15:18:35,570 INFO L226 Difference]: Without dead ends: 565 [2021-12-14 15:18:35,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-12-14 15:18:35,571 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1607 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:35,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1607 Valid, 2708 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-12-14 15:18:35,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 251. [2021-12-14 15:18:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 242 states have (on average 1.2727272727272727) internal successors, (308), 250 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 308 transitions. [2021-12-14 15:18:35,600 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 308 transitions. Word has length 65 [2021-12-14 15:18:35,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:35,601 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 308 transitions. [2021-12-14 15:18:35,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:35,601 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 308 transitions. [2021-12-14 15:18:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 15:18:35,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:35,602 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] [2021-12-14 15:18:35,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 15:18:35,603 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1360022849, now seen corresponding path program 1 times [2021-12-14 15:18:35,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:35,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5476693] [2021-12-14 15:18:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:35,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:35,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:35,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5476693] [2021-12-14 15:18:35,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5476693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:35,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:35,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 15:18:35,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312216987] [2021-12-14 15:18:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:35,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 15:18:35,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 15:18:35,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:18:35,834 INFO L87 Difference]: Start difference. First operand 251 states and 308 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:36,493 INFO L93 Difference]: Finished difference Result 684 states and 898 transitions. [2021-12-14 15:18:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 15:18:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-14 15:18:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:36,495 INFO L225 Difference]: With dead ends: 684 [2021-12-14 15:18:36,495 INFO L226 Difference]: Without dead ends: 567 [2021-12-14 15:18:36,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-12-14 15:18:36,496 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 2050 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:36,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 1402 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:18:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-14 15:18:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 188. [2021-12-14 15:18:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.2622950819672132) internal successors, (231), 187 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 231 transitions. [2021-12-14 15:18:36,523 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 231 transitions. Word has length 65 [2021-12-14 15:18:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:36,523 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 231 transitions. [2021-12-14 15:18:36,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 231 transitions. [2021-12-14 15:18:36,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 15:18:36,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:36,525 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] [2021-12-14 15:18:36,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 15:18:36,525 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1910519334, now seen corresponding path program 1 times [2021-12-14 15:18:36,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:36,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921074783] [2021-12-14 15:18:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:36,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:36,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:36,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921074783] [2021-12-14 15:18:36,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921074783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:36,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:36,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 15:18:36,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209479772] [2021-12-14 15:18:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:36,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:18:36,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:36,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:18:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:18:36,701 INFO L87 Difference]: Start difference. First operand 188 states and 231 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:37,570 INFO L93 Difference]: Finished difference Result 433 states and 567 transitions. [2021-12-14 15:18:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 15:18:37,572 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-14 15:18:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:37,574 INFO L225 Difference]: With dead ends: 433 [2021-12-14 15:18:37,574 INFO L226 Difference]: Without dead ends: 426 [2021-12-14 15:18:37,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2021-12-14 15:18:37,576 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 2197 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2197 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:37,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2197 Valid, 624 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:18:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-12-14 15:18:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 192. [2021-12-14 15:18:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.2566844919786095) internal successors, (235), 191 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 235 transitions. [2021-12-14 15:18:37,613 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 235 transitions. Word has length 66 [2021-12-14 15:18:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:37,613 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 235 transitions. [2021-12-14 15:18:37,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 235 transitions. [2021-12-14 15:18:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 15:18:37,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:37,615 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] [2021-12-14 15:18:37,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 15:18:37,615 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash -595757799, now seen corresponding path program 1 times [2021-12-14 15:18:37,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:37,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407145654] [2021-12-14 15:18:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:37,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:37,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:37,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407145654] [2021-12-14 15:18:37,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407145654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:37,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:37,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:18:37,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791518870] [2021-12-14 15:18:37,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:37,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:18:37,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:37,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:18:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:18:37,916 INFO L87 Difference]: Start difference. First operand 192 states and 235 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:38,434 INFO L93 Difference]: Finished difference Result 519 states and 684 transitions. [2021-12-14 15:18:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:18:38,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-14 15:18:38,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:38,437 INFO L225 Difference]: With dead ends: 519 [2021-12-14 15:18:38,437 INFO L226 Difference]: Without dead ends: 424 [2021-12-14 15:18:38,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-14 15:18:38,438 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 1077 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:38,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 2599 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:18:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-14 15:18:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 145. [2021-12-14 15:18:38,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 142 states have (on average 1.2605633802816902) internal successors, (179), 144 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 179 transitions. [2021-12-14 15:18:38,462 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 179 transitions. Word has length 66 [2021-12-14 15:18:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:38,462 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 179 transitions. [2021-12-14 15:18:38,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:38,463 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 179 transitions. [2021-12-14 15:18:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 15:18:38,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:38,463 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] [2021-12-14 15:18:38,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 15:18:38,463 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2098457973, now seen corresponding path program 1 times [2021-12-14 15:18:38,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:38,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864861923] [2021-12-14 15:18:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:38,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:38,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:38,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864861923] [2021-12-14 15:18:38,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864861923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:38,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:38,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:38,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708853726] [2021-12-14 15:18:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:38,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:38,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:38,557 INFO L87 Difference]: Start difference. First operand 145 states and 179 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:38,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:38,881 INFO L93 Difference]: Finished difference Result 227 states and 288 transitions. [2021-12-14 15:18:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 15:18:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-14 15:18:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:38,883 INFO L225 Difference]: With dead ends: 227 [2021-12-14 15:18:38,883 INFO L226 Difference]: Without dead ends: 220 [2021-12-14 15:18:38,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:18:38,884 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 997 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:38,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 439 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:18:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-14 15:18:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 145. [2021-12-14 15:18:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 142 states have (on average 1.2535211267605635) internal successors, (178), 144 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2021-12-14 15:18:38,909 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 66 [2021-12-14 15:18:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:38,909 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2021-12-14 15:18:38,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2021-12-14 15:18:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 15:18:38,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:38,910 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] [2021-12-14 15:18:38,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 15:18:38,910 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:38,911 INFO L85 PathProgramCache]: Analyzing trace with hash 476193166, now seen corresponding path program 1 times [2021-12-14 15:18:38,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:38,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016764762] [2021-12-14 15:18:38,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:38,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:38,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:38,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016764762] [2021-12-14 15:18:38,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016764762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:38,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:38,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:18:38,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899147689] [2021-12-14 15:18:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:38,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:18:38,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:18:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:18:38,993 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:39,334 INFO L93 Difference]: Finished difference Result 310 states and 402 transitions. [2021-12-14 15:18:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 15:18:39,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-14 15:18:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:39,336 INFO L225 Difference]: With dead ends: 310 [2021-12-14 15:18:39,336 INFO L226 Difference]: Without dead ends: 238 [2021-12-14 15:18:39,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-12-14 15:18:39,337 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 487 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:39,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 590 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:18:39,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-14 15:18:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 145. [2021-12-14 15:18:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 142 states have (on average 1.2464788732394365) internal successors, (177), 144 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 177 transitions. [2021-12-14 15:18:39,364 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 177 transitions. Word has length 66 [2021-12-14 15:18:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:39,365 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 177 transitions. [2021-12-14 15:18:39,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 177 transitions. [2021-12-14 15:18:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-14 15:18:39,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:39,366 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] [2021-12-14 15:18:39,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 15:18:39,366 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:39,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:39,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1262128080, now seen corresponding path program 1 times [2021-12-14 15:18:39,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:39,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830795325] [2021-12-14 15:18:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:39,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:39,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:39,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830795325] [2021-12-14 15:18:39,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830795325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:39,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:39,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-12-14 15:18:39,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395973638] [2021-12-14 15:18:39,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:39,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-14 15:18:39,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:39,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-14 15:18:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-12-14 15:18:39,867 INFO L87 Difference]: Start difference. First operand 145 states and 177 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:41,743 INFO L93 Difference]: Finished difference Result 507 states and 654 transitions. [2021-12-14 15:18:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-14 15:18:41,743 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-12-14 15:18:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:41,745 INFO L225 Difference]: With dead ends: 507 [2021-12-14 15:18:41,745 INFO L226 Difference]: Without dead ends: 499 [2021-12-14 15:18:41,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2021-12-14 15:18:41,746 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 1316 mSDsluCounter, 4756 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:41,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 5179 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:18:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-14 15:18:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 159. [2021-12-14 15:18:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 156 states have (on average 1.2435897435897436) internal successors, (194), 158 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 194 transitions. [2021-12-14 15:18:41,771 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 194 transitions. Word has length 68 [2021-12-14 15:18:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:41,772 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 194 transitions. [2021-12-14 15:18:41,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 194 transitions. [2021-12-14 15:18:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-14 15:18:41,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:41,773 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] [2021-12-14 15:18:41,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 15:18:41,773 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:41,773 INFO L85 PathProgramCache]: Analyzing trace with hash 989039241, now seen corresponding path program 1 times [2021-12-14 15:18:41,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:41,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535358862] [2021-12-14 15:18:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:41,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:42,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:42,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535358862] [2021-12-14 15:18:42,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535358862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:42,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:42,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-12-14 15:18:42,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302478048] [2021-12-14 15:18:42,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:42,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-14 15:18:42,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:42,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-14 15:18:42,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-12-14 15:18:42,389 INFO L87 Difference]: Start difference. First operand 159 states and 194 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:44,928 INFO L93 Difference]: Finished difference Result 735 states and 989 transitions. [2021-12-14 15:18:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-14 15:18:44,929 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-12-14 15:18:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:44,930 INFO L225 Difference]: With dead ends: 735 [2021-12-14 15:18:44,930 INFO L226 Difference]: Without dead ends: 729 [2021-12-14 15:18:44,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=265, Invalid=1375, Unknown=0, NotChecked=0, Total=1640 [2021-12-14 15:18:44,931 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 1783 mSDsluCounter, 6584 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 7075 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:44,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1783 Valid, 7075 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:18:44,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-12-14 15:18:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 165. [2021-12-14 15:18:44,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 162 states have (on average 1.2469135802469136) internal successors, (202), 164 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 202 transitions. [2021-12-14 15:18:44,960 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 202 transitions. Word has length 68 [2021-12-14 15:18:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:44,960 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 202 transitions. [2021-12-14 15:18:44,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 202 transitions. [2021-12-14 15:18:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:18:44,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:44,961 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] [2021-12-14 15:18:44,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-14 15:18:44,961 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:44,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:44,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1368297463, now seen corresponding path program 1 times [2021-12-14 15:18:44,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:44,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754406630] [2021-12-14 15:18:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:44,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:45,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754406630] [2021-12-14 15:18:45,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754406630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:45,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:45,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:18:45,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216622095] [2021-12-14 15:18:45,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:45,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:18:45,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:45,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:18:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:18:45,242 INFO L87 Difference]: Start difference. First operand 165 states and 202 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:45,904 INFO L93 Difference]: Finished difference Result 390 states and 513 transitions. [2021-12-14 15:18:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:18:45,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-12-14 15:18:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:45,906 INFO L225 Difference]: With dead ends: 390 [2021-12-14 15:18:45,906 INFO L226 Difference]: Without dead ends: 375 [2021-12-14 15:18:45,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-12-14 15:18:45,907 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 807 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:45,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 1936 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:18:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-14 15:18:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 149. [2021-12-14 15:18:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 147 states have (on average 1.251700680272109) internal successors, (184), 148 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 184 transitions. [2021-12-14 15:18:45,935 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 184 transitions. Word has length 69 [2021-12-14 15:18:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:45,936 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 184 transitions. [2021-12-14 15:18:45,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 184 transitions. [2021-12-14 15:18:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:18:45,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:45,937 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] [2021-12-14 15:18:45,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-14 15:18:45,937 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:45,937 INFO L85 PathProgramCache]: Analyzing trace with hash 882869858, now seen corresponding path program 1 times [2021-12-14 15:18:45,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:45,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001216616] [2021-12-14 15:18:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:45,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:46,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:46,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001216616] [2021-12-14 15:18:46,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001216616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:46,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:46,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-14 15:18:46,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894556286] [2021-12-14 15:18:46,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:46,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 15:18:46,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 15:18:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-12-14 15:18:46,533 INFO L87 Difference]: Start difference. First operand 149 states and 184 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:48,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:48,601 INFO L93 Difference]: Finished difference Result 636 states and 878 transitions. [2021-12-14 15:18:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 15:18:48,602 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-12-14 15:18:48,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:48,603 INFO L225 Difference]: With dead ends: 636 [2021-12-14 15:18:48,604 INFO L226 Difference]: Without dead ends: 630 [2021-12-14 15:18:48,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2021-12-14 15:18:48,605 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1415 mSDsluCounter, 3717 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 4089 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:48,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1415 Valid, 4089 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:18:48,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-12-14 15:18:48,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 150. [2021-12-14 15:18:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 148 states have (on average 1.25) internal successors, (185), 149 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 185 transitions. [2021-12-14 15:18:48,636 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 185 transitions. Word has length 69 [2021-12-14 15:18:48,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:48,636 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 185 transitions. [2021-12-14 15:18:48,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 185 transitions. [2021-12-14 15:18:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:18:48,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:48,637 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] [2021-12-14 15:18:48,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-14 15:18:48,637 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:48,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:48,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1637741865, now seen corresponding path program 1 times [2021-12-14 15:18:48,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:48,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114993772] [2021-12-14 15:18:48,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:48,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:49,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:49,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114993772] [2021-12-14 15:18:49,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114993772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:49,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:49,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-14 15:18:49,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402859882] [2021-12-14 15:18:49,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:49,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-14 15:18:49,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:49,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-14 15:18:49,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:18:49,116 INFO L87 Difference]: Start difference. First operand 150 states and 185 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:51,942 INFO L93 Difference]: Finished difference Result 898 states and 1256 transitions. [2021-12-14 15:18:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-14 15:18:51,946 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-12-14 15:18:51,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:51,949 INFO L225 Difference]: With dead ends: 898 [2021-12-14 15:18:51,949 INFO L226 Difference]: Without dead ends: 892 [2021-12-14 15:18:51,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=300, Invalid=1260, Unknown=0, NotChecked=0, Total=1560 [2021-12-14 15:18:51,950 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 1476 mSDsluCounter, 5002 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 5491 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:51,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1476 Valid, 5491 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:18:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-12-14 15:18:52,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 150. [2021-12-14 15:18:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 148 states have (on average 1.25) internal successors, (185), 149 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 185 transitions. [2021-12-14 15:18:52,002 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 185 transitions. Word has length 69 [2021-12-14 15:18:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:52,002 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 185 transitions. [2021-12-14 15:18:52,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:52,003 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 185 transitions. [2021-12-14 15:18:52,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:18:52,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:52,004 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] [2021-12-14 15:18:52,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-14 15:18:52,004 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:52,005 INFO L85 PathProgramCache]: Analyzing trace with hash 360048320, now seen corresponding path program 1 times [2021-12-14 15:18:52,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:52,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452925155] [2021-12-14 15:18:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:52,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:18:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:18:53,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:18:53,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452925155] [2021-12-14 15:18:53,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452925155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:18:53,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:18:53,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-12-14 15:18:53,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893396832] [2021-12-14 15:18:53,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:18:53,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-14 15:18:53,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:18:53,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-14 15:18:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2021-12-14 15:18:53,389 INFO L87 Difference]: Start difference. First operand 150 states and 185 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:59,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:18:59,779 INFO L93 Difference]: Finished difference Result 1272 states and 1795 transitions. [2021-12-14 15:18:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-14 15:18:59,780 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-12-14 15:18:59,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:18:59,783 INFO L225 Difference]: With dead ends: 1272 [2021-12-14 15:18:59,784 INFO L226 Difference]: Without dead ends: 1266 [2021-12-14 15:18:59,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=536, Invalid=2434, Unknown=0, NotChecked=0, Total=2970 [2021-12-14 15:18:59,785 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 2010 mSDsluCounter, 10083 mSDsCounter, 0 mSdLazyCounter, 5306 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 10871 SdHoareTripleChecker+Invalid, 5373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 5306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:18:59,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 10871 Invalid, 5373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 5306 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-14 15:18:59,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-12-14 15:18:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 150. [2021-12-14 15:18:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 148 states have (on average 1.25) internal successors, (185), 149 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 185 transitions. [2021-12-14 15:18:59,831 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 185 transitions. Word has length 69 [2021-12-14 15:18:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:18:59,831 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 185 transitions. [2021-12-14 15:18:59,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:18:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 185 transitions. [2021-12-14 15:18:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-14 15:18:59,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:18:59,832 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] [2021-12-14 15:18:59,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-14 15:18:59,832 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:18:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:18:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1435979509, now seen corresponding path program 1 times [2021-12-14 15:18:59,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:18:59,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549769631] [2021-12-14 15:18:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:18:59,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:18:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:00,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:00,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549769631] [2021-12-14 15:19:00,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549769631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:00,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:00,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-14 15:19:00,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446783261] [2021-12-14 15:19:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:00,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 15:19:00,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:00,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 15:19:00,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-14 15:19:00,228 INFO L87 Difference]: Start difference. First operand 150 states and 185 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:02,522 INFO L93 Difference]: Finished difference Result 759 states and 1070 transitions. [2021-12-14 15:19:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-14 15:19:02,523 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-12-14 15:19:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:02,525 INFO L225 Difference]: With dead ends: 759 [2021-12-14 15:19:02,526 INFO L226 Difference]: Without dead ends: 753 [2021-12-14 15:19:02,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-12-14 15:19:02,533 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 1602 mSDsluCounter, 3881 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 4368 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:19:02,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 4368 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:19:02,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-12-14 15:19:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 127. [2021-12-14 15:19:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.253968253968254) internal successors, (158), 126 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2021-12-14 15:19:02,639 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 70 [2021-12-14 15:19:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:19:02,639 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2021-12-14 15:19:02,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2021-12-14 15:19:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 15:19:02,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:19:02,640 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] [2021-12-14 15:19:02,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-14 15:19:02,641 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:19:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:19:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash 262304865, now seen corresponding path program 1 times [2021-12-14 15:19:02,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:19:02,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614510112] [2021-12-14 15:19:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:19:02,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:19:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:02,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:02,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614510112] [2021-12-14 15:19:02,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614510112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:02,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:02,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:19:02,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698105163] [2021-12-14 15:19:02,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:02,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:19:02,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:19:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:19:02,767 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2021-12-14 15:19:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:03,172 INFO L93 Difference]: Finished difference Result 559 states and 798 transitions. [2021-12-14 15:19:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 15:19:03,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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 [2021-12-14 15:19:03,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:03,173 INFO L225 Difference]: With dead ends: 559 [2021-12-14 15:19:03,173 INFO L226 Difference]: Without dead ends: 505 [2021-12-14 15:19:03,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:19:03,175 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 892 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:19:03,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 949 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:19:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-14 15:19:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 179. [2021-12-14 15:19:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.3202247191011236) internal successors, (235), 178 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 235 transitions. [2021-12-14 15:19:03,245 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 235 transitions. Word has length 91 [2021-12-14 15:19:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:19:03,246 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 235 transitions. [2021-12-14 15:19:03,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2021-12-14 15:19:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 235 transitions. [2021-12-14 15:19:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:19:03,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:19:03,247 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] [2021-12-14 15:19:03,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-14 15:19:03,247 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:19:03,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:19:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash -403802728, now seen corresponding path program 1 times [2021-12-14 15:19:03,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:19:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636893165] [2021-12-14 15:19:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:19:03,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:19:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:03,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:03,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636893165] [2021-12-14 15:19:03,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636893165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:03,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:03,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:19:03,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322554964] [2021-12-14 15:19:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:03,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:19:03,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:19:03,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:19:03,307 INFO L87 Difference]: Start difference. First operand 179 states and 235 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-14 15:19:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:03,662 INFO L93 Difference]: Finished difference Result 657 states and 941 transitions. [2021-12-14 15:19:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:19:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 [2021-12-14 15:19:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:03,665 INFO L225 Difference]: With dead ends: 657 [2021-12-14 15:19:03,665 INFO L226 Difference]: Without dead ends: 551 [2021-12-14 15:19:03,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:19:03,667 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 646 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:19:03,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 660 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:19:03,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-12-14 15:19:03,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 283. [2021-12-14 15:19:03,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.3829787234042554) internal successors, (390), 282 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 390 transitions. [2021-12-14 15:19:03,778 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 390 transitions. Word has length 93 [2021-12-14 15:19:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:19:03,778 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 390 transitions. [2021-12-14 15:19:03,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-14 15:19:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 390 transitions. [2021-12-14 15:19:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:19:03,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:19:03,780 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] [2021-12-14 15:19:03,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-14 15:19:03,780 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:19:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:19:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash 638646745, now seen corresponding path program 1 times [2021-12-14 15:19:03,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:19:03,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432822881] [2021-12-14 15:19:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:19:03,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:19:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:03,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:03,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432822881] [2021-12-14 15:19:03,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432822881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:03,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:03,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:19:03,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170193547] [2021-12-14 15:19:03,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:03,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:19:03,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:19:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:19:03,904 INFO L87 Difference]: Start difference. First operand 283 states and 390 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-14 15:19:04,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:04,125 INFO L93 Difference]: Finished difference Result 495 states and 703 transitions. [2021-12-14 15:19:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:19:04,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 [2021-12-14 15:19:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:04,127 INFO L225 Difference]: With dead ends: 495 [2021-12-14 15:19:04,128 INFO L226 Difference]: Without dead ends: 285 [2021-12-14 15:19:04,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:19:04,130 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 417 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:19:04,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 376 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:19:04,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-12-14 15:19:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 283. [2021-12-14 15:19:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.375886524822695) internal successors, (388), 282 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:04,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 388 transitions. [2021-12-14 15:19:04,259 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 388 transitions. Word has length 93 [2021-12-14 15:19:04,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:19:04,259 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 388 transitions. [2021-12-14 15:19:04,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-14 15:19:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 388 transitions. [2021-12-14 15:19:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:19:04,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:19:04,260 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] [2021-12-14 15:19:04,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-14 15:19:04,260 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:19:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:19:04,260 INFO L85 PathProgramCache]: Analyzing trace with hash 572153233, now seen corresponding path program 1 times [2021-12-14 15:19:04,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:19:04,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453489096] [2021-12-14 15:19:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:19:04,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:19:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:04,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:04,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453489096] [2021-12-14 15:19:04,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453489096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:04,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:04,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:19:04,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480709976] [2021-12-14 15:19:04,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:04,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:19:04,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:04,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:19:04,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:19:04,317 INFO L87 Difference]: Start difference. First operand 283 states and 388 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-12-14 15:19:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:04,536 INFO L93 Difference]: Finished difference Result 677 states and 964 transitions. [2021-12-14 15:19:04,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:19:04,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 [2021-12-14 15:19:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:04,538 INFO L225 Difference]: With dead ends: 677 [2021-12-14 15:19:04,539 INFO L226 Difference]: Without dead ends: 467 [2021-12-14 15:19:04,539 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 [2021-12-14 15:19:04,540 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 88 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 250 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 [2021-12-14 15:19:04,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 250 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:19:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-12-14 15:19:04,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 461. [2021-12-14 15:19:04,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.3891304347826088) internal successors, (639), 460 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:04,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 639 transitions. [2021-12-14 15:19:04,784 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 639 transitions. Word has length 93 [2021-12-14 15:19:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:19:04,785 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 639 transitions. [2021-12-14 15:19:04,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-12-14 15:19:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 639 transitions. [2021-12-14 15:19:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:19:04,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:19:04,786 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] [2021-12-14 15:19:04,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-14 15:19:04,786 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:19:04,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:19:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1651929496, now seen corresponding path program 1 times [2021-12-14 15:19:04,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:19:04,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802582947] [2021-12-14 15:19:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:19:04,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:19:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:04,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:04,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802582947] [2021-12-14 15:19:04,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802582947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:04,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:04,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:19:04,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203512130] [2021-12-14 15:19:04,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:04,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:19:04,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:19:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:19:04,850 INFO L87 Difference]: Start difference. First operand 461 states and 639 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-14 15:19:05,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:05,502 INFO L93 Difference]: Finished difference Result 1340 states and 1907 transitions. [2021-12-14 15:19:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:19:05,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 [2021-12-14 15:19:05,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:05,506 INFO L225 Difference]: With dead ends: 1340 [2021-12-14 15:19:05,506 INFO L226 Difference]: Without dead ends: 1145 [2021-12-14 15:19:05,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:19:05,507 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 611 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:19:05,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 688 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:19:05,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-12-14 15:19:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 751. [2021-12-14 15:19:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.4093333333333333) internal successors, (1057), 750 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1057 transitions. [2021-12-14 15:19:05,818 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1057 transitions. Word has length 93 [2021-12-14 15:19:05,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:19:05,818 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1057 transitions. [2021-12-14 15:19:05,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-14 15:19:05,818 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1057 transitions. [2021-12-14 15:19:05,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:19:05,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:19:05,819 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] [2021-12-14 15:19:05,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-14 15:19:05,820 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:19:05,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:19:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash -767888488, now seen corresponding path program 1 times [2021-12-14 15:19:05,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:19:05,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560787013] [2021-12-14 15:19:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:19:05,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:19:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:05,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:05,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560787013] [2021-12-14 15:19:05,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560787013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:05,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:05,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:19:05,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408391398] [2021-12-14 15:19:05,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:05,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:19:05,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:19:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:19:05,890 INFO L87 Difference]: Start difference. First operand 751 states and 1057 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-14 15:19:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:06,671 INFO L93 Difference]: Finished difference Result 1533 states and 2186 transitions. [2021-12-14 15:19:06,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:19:06,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 [2021-12-14 15:19:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:06,677 INFO L225 Difference]: With dead ends: 1533 [2021-12-14 15:19:06,677 INFO L226 Difference]: Without dead ends: 1338 [2021-12-14 15:19:06,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:19:06,678 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 580 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:19:06,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 739 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:19:06,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-12-14 15:19:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 944. [2021-12-14 15:19:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 943 states have (on average 1.4167550371155886) internal successors, (1336), 943 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1336 transitions. [2021-12-14 15:19:07,346 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1336 transitions. Word has length 93 [2021-12-14 15:19:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:19:07,347 INFO L470 AbstractCegarLoop]: Abstraction has 944 states and 1336 transitions. [2021-12-14 15:19:07,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-14 15:19:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1336 transitions. [2021-12-14 15:19:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-14 15:19:07,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:19:07,363 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] [2021-12-14 15:19:07,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-14 15:19:07,365 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:19:07,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:19:07,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2122104904, now seen corresponding path program 1 times [2021-12-14 15:19:07,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:19:07,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018615647] [2021-12-14 15:19:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:19:07,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:19:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:07,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:07,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018615647] [2021-12-14 15:19:07,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018615647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:07,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:07,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:19:07,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076773064] [2021-12-14 15:19:07,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:07,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:19:07,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:19:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:19:07,443 INFO L87 Difference]: Start difference. First operand 944 states and 1336 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:08,755 INFO L93 Difference]: Finished difference Result 2614 states and 3726 transitions. [2021-12-14 15:19:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:19:08,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-14 15:19:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:08,763 INFO L225 Difference]: With dead ends: 2614 [2021-12-14 15:19:08,764 INFO L226 Difference]: Without dead ends: 1743 [2021-12-14 15:19:08,765 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 [2021-12-14 15:19:08,766 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 72 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:19:08,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 331 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:19:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2021-12-14 15:19:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1669. [2021-12-14 15:19:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1668 states have (on average 1.4142685851318946) internal successors, (2359), 1668 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2359 transitions. [2021-12-14 15:19:09,936 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2359 transitions. Word has length 94 [2021-12-14 15:19:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:19:09,937 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 2359 transitions. [2021-12-14 15:19:09,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:09,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2359 transitions. [2021-12-14 15:19:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-14 15:19:09,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:19:09,938 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] [2021-12-14 15:19:09,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-14 15:19:09,938 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:19:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:19:09,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1022881993, now seen corresponding path program 1 times [2021-12-14 15:19:09,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:19:09,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963111107] [2021-12-14 15:19:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:19:09,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:19:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:10,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:10,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963111107] [2021-12-14 15:19:10,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963111107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:10,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:10,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:19:10,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741963302] [2021-12-14 15:19:10,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:10,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:19:10,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:10,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:19:10,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:19:10,036 INFO L87 Difference]: Start difference. First operand 1669 states and 2359 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2021-12-14 15:19:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:12,504 INFO L93 Difference]: Finished difference Result 4717 states and 6669 transitions. [2021-12-14 15:19:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:19:12,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 [2021-12-14 15:19:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:12,514 INFO L225 Difference]: With dead ends: 4717 [2021-12-14 15:19:12,514 INFO L226 Difference]: Without dead ends: 3121 [2021-12-14 15:19:12,532 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 [2021-12-14 15:19:12,532 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 65 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 331 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 [2021-12-14 15:19:12,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 331 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:19:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-12-14 15:19:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 2975. [2021-12-14 15:19:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2974 states have (on average 1.402488231338265) internal successors, (4171), 2974 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:19:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 4171 transitions. [2021-12-14 15:19:14,534 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 4171 transitions. Word has length 95 [2021-12-14 15:19:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:19:14,534 INFO L470 AbstractCegarLoop]: Abstraction has 2975 states and 4171 transitions. [2021-12-14 15:19:14,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2021-12-14 15:19:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 4171 transitions. [2021-12-14 15:19:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-14 15:19:14,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:19:14,541 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] [2021-12-14 15:19:14,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-14 15:19:14,541 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-14 15:19:14,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:19:14,543 INFO L85 PathProgramCache]: Analyzing trace with hash -369091068, now seen corresponding path program 1 times [2021-12-14 15:19:14,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:19:14,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126819050] [2021-12-14 15:19:14,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:19:14,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:19:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:19:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:19:14,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:19:14,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126819050] [2021-12-14 15:19:14,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126819050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:19:14,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:19:14,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:19:14,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75939767] [2021-12-14 15:19:14,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:19:14,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:19:14,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:19:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:19:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:19:14,627 INFO L87 Difference]: Start difference. First operand 2975 states and 4171 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2021-12-14 15:19:17,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:19:17,516 INFO L93 Difference]: Finished difference Result 8491 states and 11853 transitions. [2021-12-14 15:19:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:19:17,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 [2021-12-14 15:19:17,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:19:17,537 INFO L225 Difference]: With dead ends: 8491 [2021-12-14 15:19:17,537 INFO L226 Difference]: Without dead ends: 5589 [2021-12-14 15:19:17,541 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 [2021-12-14 15:19:17,542 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 55 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 331 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 [2021-12-14 15:19:17,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 331 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:19:17,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5589 states.